The development of low-cost semiconductor photocatalysts for highly efficient and durable photocatalytic H2 evolution under visible light is very challenging.In this study,we combine low-cost metallic Ni3C cocatalysts...The development of low-cost semiconductor photocatalysts for highly efficient and durable photocatalytic H2 evolution under visible light is very challenging.In this study,we combine low-cost metallic Ni3C cocatalysts with twin nanocrystal Zn0.5Cd0.5S(ZCS)solid solution homojunctions for an efficient visible-light-driven H2 production by a simple approach.As-synthesized Zn0.5Cd0.5S-1%Ni3C(ZCS-1)heterojunction/homojunction nanohybrid exhibited the highest photocatalytic H2-evolution rate of 783μmol h‒1 under visible light,which is 2.88 times higher than that of pristine twin nanocrystal ZCS solid solution.The apparent quantum efficiencies of ZCS and ZCS-1 are measured to be 6.13%and 19.25%at 420 nm,respectively.Specifically,the homojunctions between the zinc blende and wurtzite segments in twin nanocrystal ZCS solid solution can significantly improve the light absorption and separation of photogenerated electron-hole pairs.Furthermore,the heterojunction between ZCS and metallic Ni3C NP cocatalysts can efficiently trap excited electrons from ZCS solid solution and enhance the H2-evolution kinetics at the surface for improving catalytic activity.This study demonstrates a unique one-step strategy for constructing heterojunction/homojunction hybrid nanostructures for a more efficient photocatalytic H2 evolution compared to other noble metal photocatalytic systems.展开更多
In the quest for effective solutions to address Environ.Pollut.and meet the escalating energy demands,heterojunction photocatalysts have emerged as a captivating and versatile technology.These photocatalysts have garn...In the quest for effective solutions to address Environ.Pollut.and meet the escalating energy demands,heterojunction photocatalysts have emerged as a captivating and versatile technology.These photocatalysts have garnered significant interest due to their wideranging applications,including wastewater treatment,air purification,CO_(2) capture,and hydrogen generation via water splitting.This technique harnesses the power of semiconductors,which are activated under light illumination,providing the necessary energy for catalytic reactions.With visible light constituting a substantial portion(46%)of the solar spectrum,the development of visible-light-driven semiconductors has become imperative.Heterojunction photocatalysts offer a promising strategy to overcome the limitations associated with activating semiconductors under visible light.In this comprehensive review,we present the recent advancements in the field of photocatalytic degradation of contaminants across diverse media,as well as the remarkable progress made in renewable energy production.Moreover,we delve into the crucial role played by various operating parameters in influencing the photocatalytic performance of heterojunction systems.Finally,we address emerging challenges and propose novel perspectives to provide valuable insights for future advancements in this dynamic research domain.By unraveling the potential of heterojunction photocatalysts,this reviewcontributes to the broader understanding of their applications and paves the way for exciting avenues of exploration and innovation.展开更多
It is very appealing that 5-hydroxymethylfurfural(HMF)is electrocatalytical oxidized as 2,5-furandicarboxylic acid(FDCA)linking to non-classical cathodic hydrogen(H_(2))production.However,the electrocatalysts for elec...It is very appealing that 5-hydroxymethylfurfural(HMF)is electrocatalytical oxidized as 2,5-furandicarboxylic acid(FDCA)linking to non-classical cathodic hydrogen(H_(2))production.However,the electrocatalysts for electrocatalytic HMF oxidative reaction(e-HMFOR)have been facing low Faradaic efficiency(FE)and high water splitting voltage.Herein,we propose a strategy of the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction by constructing a Co-Ni paired site,where the Co site is in charge of adsorbing for HMF while the electrons are transferred to the Ni site,thus giving the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction superior electrocata lytic performances for e-HMFOR and water splitting.By optimizing conditions,the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction has high conversion of 99.7%,high selectivity of 99.9%,and high FE of 98.4%at 1.3 V,as well as low cell voltage of 1.31 V at 10 mA cm^(-2)in 1 M KOH+0.1 M HMF.This study offers a potential insight for e-HMFOR to high value-added FDCA coupling water splitting to produce H_(2)in an economical manner.展开更多
BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step method.The resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degradi...BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step method.The resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure ZnO.The 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and recyclability.The enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole recombination.Furthermore,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active species.Therefore,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.展开更多
Fenton method combined with light to accelerate the production of free radicals from H2O2 can achieve more efficient pollutant degradation.In this paper,a novel BiOI/FeWO4 S-scheme heterojunction photocatalyst was obt...Fenton method combined with light to accelerate the production of free radicals from H2O2 can achieve more efficient pollutant degradation.In this paper,a novel BiOI/FeWO4 S-scheme heterojunction photocatalyst was obtained by in situ synthesis,which can activate H2O2 and degrade the organic pollutant OFC(ofloxacin)under visible light.The S-scheme charge transfer mechanism was confirmed by XPS spectroscopy,in situ KPFM and theoretical calculation.The photogenerated electrons were transferred from FeWO4 to BiOI driven by the built-in electric field and band bending,which inhibited carrier recombination and facilitated the activation of H2O2.The BiFe-5/Vis/H2O2 system degraded OFC up to 96.4%in 60 min.This study provides new systematic insights into the activation of H2O2 by S-scheme heterojunctions,which is of great significance for the treatment of antibiotic wastewater.展开更多
Composite solid electrolytes(CSEs)are considered among the most promising candidates for solid-state batteries.However,their practical application is hindered by low ionic conductivity and a limited lithium-ion transf...Composite solid electrolytes(CSEs)are considered among the most promising candidates for solid-state batteries.However,their practical application is hindered by low ionic conductivity and a limited lithium-ion transference number,primarily owing to the insufficient mobility of Li+.In this work,we design a heterojunc-tion nanoparticle composed of bimetallic zeolitic imidazolate frameworks(ZIFs)coupled with amorphous tita-nium oxide(TiO_(2)@Zn/Co–ZIF)as a filler to fabricate a composite solid-state electrolyte(PVZT).The amor-phous TiO_(2) coating facilitates salt dissociation through Lewis acid–base interactions with the anions of the lithium salt.Meanwhile,the Zn/Co–ZIF framework not only provides additional selective pathways for Li+transport but also effectively restricts anion migration through its confined pore size.The synergistic effect results in a high room-temperature ionic conductivity(8.8×10^(-4) S·cm^(-1))and a lithium-ion transference number of 0.47 for PVZT.A symmetrical cell using PVZT demonstrates stable Li+deposition/stripping for over 1100 h at a current density of 0.1 mA·cm^(-2).Additionally,a LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/Li full cell using PVZT retains 75.0%of its capacity after 1200 cycles at a 2 C rate.This work offers valuable insights into the design of func-tional fillers for CSEs with highly efficient ion transport.展开更多
Colloidal quantum dots(CQDs)are affected by the quantum confinement effect,which makes their bandgap tunable.This characteristic allows these materials to cover a broader infrared spectrum,providing a costeffective al...Colloidal quantum dots(CQDs)are affected by the quantum confinement effect,which makes their bandgap tunable.This characteristic allows these materials to cover a broader infrared spectrum,providing a costeffective alternative to traditional infrared detector technology.Recently,thanks to the solution processing properties of quantum dots and their ability to integrate with silicon-based readout circuits on a single chip,infrared detectors based on HgTe CQDs have shown great application prospects.However,facing the challenges of vertically stacked photovoltaic devices,such as barrier layer matching and film non-uniformity,most devices integrated with readout circuits still use a planar structure,which limits the efficiency of light absorption and the effective separation and collection of photo-generated carriers.Here,by synthesizing high-quality HgTe CQDs and precisely controlling the interface quality,we have successfully fabricated a photovoltaic detector based on HgTe and ZnO QDs.At a working temperature of 80 K,this detector achieved a low dark current of 5.23×10^(-9)A cm^(-2),a high rectification ratio,and satisfactory detection sensitivity.This work paves a new way for the vertical integration of HgTe CQDs on silicon-based readout circuits,demonstrating their great potential in the field of high-performance infrared detection.展开更多
A Co_(3)O_(4)/BiOBr heterojunction was synthesized via a facile one-step solvothermal method for highly selec-tive photocatalytic CO_(2)reduction.The optimized Co_(3)O_(4)/BiOBr-0.8 catalyst exhibited CO and CH_(4)evo...A Co_(3)O_(4)/BiOBr heterojunction was synthesized via a facile one-step solvothermal method for highly selec-tive photocatalytic CO_(2)reduction.The optimized Co_(3)O_(4)/BiOBr-0.8 catalyst exhibited CO and CH_(4)evolution rates of 112.2 and 5.5µmol·g^(-1)·h^(-1),respectively,representing 6.3-fold and 3.9-fold enhancements over pristine BiOBr.The heterojunction demonstrated broadened light absorption,enhanced photoelectrochemical activity,reduced charge-transfer resistance,and improved separation efficiency of photogenerated carriers(e^(-)/h^(+)).These synergistic effects were attributed to the formation of a Z-scheme heterostructure,which facilitated solar energy utilization and electron reduction capacity while suppressing carrier recombination.展开更多
Recent advances in van der Waals(vdW) ferroelectrics have sparked the development of related heterostructures with non-volatile and field-tunable functionalities. In vdW ferroelectric heterojunctions, the interfacial ...Recent advances in van der Waals(vdW) ferroelectrics have sparked the development of related heterostructures with non-volatile and field-tunable functionalities. In vdW ferroelectric heterojunctions, the interfacial electrical characteristics play a crucial role in determining their performance and functionality. In this study,we explore the interfacial polarization coupling in two-dimensional(2D) ferroelectric heterojunctions by fabricating a graphene/h-BN/CuInP_(2)S_(6)/α-In_(2)Se_(3)/Au ferroelectric field-effect transistor. By varying the gate electric field, the CuInP_(2)S_(6)/α-In_(2)Se_(3) heterojunction displays distinct interfacial polarization coupling states, resulting in significantly different electrical transport behaviors. Under strong gate electric fields, the migration of Cu ions further enhances the interfacial polarization effect, enabling continuous tuning of both the polarization state and carrier concentration in α-In_(2)Se_(3). Our findings offer valuable insights for the development of novel multifunctional devices based on 2D ferroelectric materials.展开更多
The design of customized crystal plane heterojunction can effectively leverage the optimal anisotropic interaction of crystal plane,thereby enhancing photocatalytic activity.In this study,Co_(3)O_(4) exposed(111),(110...The design of customized crystal plane heterojunction can effectively leverage the optimal anisotropic interaction of crystal plane,thereby enhancing photocatalytic activity.In this study,Co_(3)O_(4) exposed(111),(110),and(100)crystal planes(designated as HCO,NCO,and CCO,respectively)were synthesized and successfully coupled with Cd_(0.5)Zn_(0.5)S(CZS).Among these composites,the HCO/CZS exhibited best hydrogen evolution activity.In conjunction with DFT calculations and femtosecond transient absorption spectroscopy,it has been found that:the crystal plane interaction between HCO and CZS enabled the composite catalyst to exhibit optimal anisotropy in crystal plane carrier transport,crystal plane active sites,and crystal plane electronic structure.This interaction induces a redistribution of electrons at their contact interface,thereby establishing a built-in electric field that facilitates the formation of ohmic heterojunction between HCO and CZS.The synergistic effect of the ohmic heterojunction and crystal plane anisotropy not only decreases the Gibbs free energy of hydrogen adsorption but also facilitates the efficient spatial separation and rapid transfer of electron-hole pairs.This study offers valuable insights into the customization of crystal plane heterojunctions,aiming to maximize anisotropic interactions between crystal planes in order to enhance photocatalytic hydrogen evolution.展开更多
Background:Bacterial infection significantly poses an obstacle to wound healing because the skin is in direct contact with the outside.Current antibiotic therapies may contribute to the appearance of the drug-resistan...Background:Bacterial infection significantly poses an obstacle to wound healing because the skin is in direct contact with the outside.Current antibiotic therapies may contribute to the appearance of the drug-resistant bacteria,reducing the effectiveness of therapeutic interventions.Thus,a safe and efficiency antibacterial strategy is in an urgent demand.Methods:To address this issue,MXene/MgO_(2)@Succinic acid(MMS)bio-heterojunction with excellent photothermal capability has been developed by hydrothermal method and surface modification in this work.MMS generates localized heat under near-infrared laser irradiation that could interfere with the normal physiological functions of the bacteria,ultimately leading to bacterial inactivation.Results:The experiments verify that the MXene/MgO_(2)@Succinic acid exhibits favorable photo-inspired capability and antibacterial property against Staphylococcus aureus(S.aureus)with an antibacterial rate of 98.7%.Conclusion:This innovative approach shows promising potential for treating infected wounds and promoting skin regeneration,offering a superior alternative to traditional antibiotic therapies.It provides a solution to combat bacterial infections without contributing to antimicrobial resistance.展开更多
Lithium-sulfur(Li-S)batteries promise high energy density but suffer from low conductivity,polysulfide shuttling,and sluggish conversion kinetics.The construction of heterointerfaces is an effective strategy for enhan...Lithium-sulfur(Li-S)batteries promise high energy density but suffer from low conductivity,polysulfide shuttling,and sluggish conversion kinetics.The construction of heterointerfaces is an effective strategy for enhancing both polysulfide adsorption and conversion;however,the poor lattice compatibility in the heterointerface formed by different materials hinders interfacial charge transfer.In response to these challenges,herein,a biphasic homojunction of TiO_(2)enriched with oxygen vacancies and decorated with nitrogen-doped carbon nanotubes(B-TiO_(2-x)@NCNT)was designed to simultaneously enhance adsorption ability and catalytic activity.This homojunction interface composed of rutile(110)and anatase(101)plane exhibits excellent compatibility,and density functional theory(DFT)calculations reveal that this biphasic interface possesses a much higher binding energy to polysulfides compared to single-phase TiO_(2).Additionally,NCNTs are in situ grown on both interior and exterior surfaces of the hollow TiO_(2)nanospheres,facilitating rapid electron transfer for the encapsulated sulfur.The homojunction interface synergistically leverages the oxygen vacancies and highly conductive NCNTs to enhance the bidirectional catalytic activity for polysulfide conversion.Therefore,in this multifunctional sulfur-host,polysulfides are first strongly adsorbed at the homojunction interfaces and subsequently undergo smooth conversion,nucleation,and decomposition,completing a rapid sulfur redox cycle.The assembled Li-S battery delivered a high specific capacity of 1234.3 mAh g^(-1)at 0.2 C,long cycling stability for over 1000 cycles at 5 C with a low decay rate of 0.035%,and exciting areal capacity at a high sulfur loading of 5.6 mg cm^(-2)for 200cycles.展开更多
Solar hydrogen production via water splitting is pivotal for solar energy harnessing,addressing key challenges in energy and environmental sustainability.However,two critical issues persist with single-component photo...Solar hydrogen production via water splitting is pivotal for solar energy harnessing,addressing key challenges in energy and environmental sustainability.However,two critical issues persist with single-component photocatalysts:suboptimal carrier transport and inadequate light absorption.While heterojunction-based artificial photosynthetic systems like Z-scheme photocatalysts have been explored,their charge recombination and light harvesting efficiency are still unsatisfactory.S-scheme heterojunctions have gained attention in photocatalysis,owing to their pronounced built-in electric field and superior redox capabilities.In this study,we introduce a MXene-based S-scheme H-TiO_(2)/g-C_(3)N_(4)/Ti_(3)C_(2)heterojunction(TCMX),synthesized through electrostatic self-assembly.The as-prepared TCMX exhibited an excellent photocatalytic hydrogen evolution rate of 53.67 mmol g^(-1)h^(-1)surpassing the performance of commercial Rutile TiO_(2),H-TiO_(2),g-C_(3)N_(4),and HTCN.The effectiveness of TCMX is largely due to the builtin electric field in the S-scheme heterojunction and the cocatalytic activity of MXene promoting rapid separation of photogenerated charges and resulting in well-separated electron and hole enriched sites.This study offers a new approach to enhance photocatalytic hydrogen evolution efficiency and paves the way for the future design of S-scheme heterojunctions.展开更多
Antibiotics and heavy metals usually co-exist in wastewater and pose serious environmental hazards.Herein,a series of VMo-BMO/O_(v)-BOB S-scheme heterojunctions with double vacancy(Mo vacancy and photoexcited O vacanc...Antibiotics and heavy metals usually co-exist in wastewater and pose serious environmental hazards.Herein,a series of VMo-BMO/O_(v)-BOB S-scheme heterojunctions with double vacancy(Mo vacancy and photoexcited O vacancy)were constructed via an electrostatic assembly method.The removal efficiency of Cr(VI)and tetracycline(TC)over VMo-BMO/O_(v)-BOB-0.3 was 2.47 and 1.13 times than that of a single system,respectively.In-situ EPR demonstrated that the surface O vacancies could be generated under LED light irradiation.These photoexcited O vacancies(P-O_(v))enabled VMo-BMO/O_(v)-BOB composites still exhibit satisfactory activity after five successive cycles and an amplified Fermi level gap.The enhancement could be attributed to the enhanced internal electric field and double-vacancy-induced polarization.Additionally,the density functional theory calculation results suggested that double vacancy induced polarization electric field increases the dipole moment,which was conducive to rapid electron transport.Photoluminescence and time-resolved photoluminescence analysis demonstrated that the introduction of S-scheme heterojunction and double vacancy promoted charge transfer and prolonged the lifetime of carriers.Degradation intermediates and toxicity of products were evaluated.In conclusion,a possible mechanism based on VMo-BMO/O_(v)-BOB S-scheme heterojunction in the simultaneous removal of Cr(VI)and TC was proposed.展开更多
The rapid development of rare earth metal elements in the field of photocatalysis is due to their excellent optical and physicochemical properties.Benefiting from the unique external electronic structure of 4f_15d_16S...The rapid development of rare earth metal elements in the field of photocatalysis is due to their excellent optical and physicochemical properties.Benefiting from the unique external electronic structure of 4f_15d_16S_2,superior electronegativity of the 4f orbitals,and strong oxygen storage-release ability in Ce^(4+)/Ce^(3+)reversible pairs,cerium dioxide(CeO_(2))has attracted increasing interest from scientists.Nevertheless,the fast recombination of photoinduced electron-hole pairs and wide energy band gap of bare CeO_(2)significantly limit its practical applications.To overcome the above drawbacks,the construction of heterojunctions has been developed to broaden the absorption spectrum and accelerate the charge transfer.This review presents a mini-review of the synthesis of CeO_(2)-based heterojunctions including typeⅡ,Z-scheme,and S-scheme photocatalysts,as well as the corresponding applications in photocatalytic bactericidal and antitumor therapy.Finally,the latest advancements and potential perspectives on their future development are also discussed.展开更多
Sulfide photocatalysts are one of the widely recognized excellent photocatalysts.However,the stability of sulfide photocatalysts has always been a challenging problem in the field of photocatalysis.Herein,an in-situ o...Sulfide photocatalysts are one of the widely recognized excellent photocatalysts.However,the stability of sulfide photocatalysts has always been a challenging problem in the field of photocatalysis.Herein,an in-situ oxidation strategy was designed to construct ZnO/ZnS homologous S-scheme catalysts and solve its poor stability problem.The results indicates that the obtained ZnO/ZnS homologous heterojunction not only has dual-function performance,but also has good recover ability in photocatalytic performance:the photocatalytic H_(2)O_(2)yield can reach 517.32μmol g^(–1)(in pure water)after two hours,the photocatalytic H_(2)yield is 140.45 mmol g^(–1)in 5 h,which were 2.2 times and 84 times than that of the ZnS,respectively.Excitingly,the recovery rate of photocatalytic performance can be increased from 33.3%to 97.2%.The excellent photocatalytic performance is attributed to that the obtained homologous heterojunction can not only broaden the light absorption capacity(370–600 nm),but also facilitate the separation and transfer of photogenerated electrons.The high recovery rate of photocatalytic stability is due to the re-generation of zinc oxide in the oxidation process,which makes the photocatalyst return to the original homologous heterojunction structure.Meanwhile,experimental results,density functional theory calculations and Kelvin probe force microscopy indicate that the photo-induced carrier transfer pathway follows the S-scheme heterojunction mechanism.This work provides new ideas and breakthroughs for the design and construction of sulfide photocatalysts with excellent photocatalytic stability.展开更多
Amorphous InGaZnO(IGZO)is a potential candidate for integrated circuits based on thin-film transistors(TFTs)owing to its low-temperature processability and high mobility.Amorphous InGaMgO/InGaZnO(IGMO/IGZO)heterojunct...Amorphous InGaZnO(IGZO)is a potential candidate for integrated circuits based on thin-film transistors(TFTs)owing to its low-temperature processability and high mobility.Amorphous InGaMgO/InGaZnO(IGMO/IGZO)heterojunction was deposited and TFTs based on IGMO/IGZO heterojunction were fabricated in this report.The energy band at the IGMO/IGZO heterojunction was characterized,and the potential well at the interface of IGZO is critical to the enhanced ultraviolet detection of the IGMO/IGZO heterojunction.Furthermore,the TFTs based on IGMO/IGZO heterojunction exhibited a high responsivity of 3.8×10^(3) A/W and a large detectivity of 5.2×10^(14) Jones under 350-nm ultraviolet illumination,which will also benefit for fabrication of monolithic ultraviolet sensing chip.展开更多
Covalent organic frameworks(COFs)are newly developed crystalline substances that are garnering growing interest because of their ultrahigh porosity,crystalline nature,and easy-modified architecture,showing promise in ...Covalent organic frameworks(COFs)are newly developed crystalline substances that are garnering growing interest because of their ultrahigh porosity,crystalline nature,and easy-modified architecture,showing promise in the field of photocatalysis.However,it is difficult for pure COFs materials to achieve excellent photocatalytic hydrogen production due to their severe carrier recombination problems.To mitigate this crucial issue,establishing heterojunction is deemed an effective approach.Nonetheless,many of the metal-containing materials that have been used to construct heterojunctions with COFs own a number of drawbacks,including small specific surface area and rare active sites(for inorganic semiconductor materials),wider bandgaps and higher preparation costs(for MOFs).Therefore,it is necessary to choose metal-free materials that are easy to prepare.Red phosphorus(RP),as a semiconductor material without metal components,with suitable bandgap,moderate redox potential,relatively minimal toxicity,is affordable and readily available.Herein,a range of RP/TpPa-1-COF(RP/TP1C)composites have been successfully prepared through solvothermal method.The two-dimensional structure of the two materials causes strong interactions between the materials,and the construction of heterojunctions effectively inhibits the recombination of photogenic charge carriers.As a consequence,the 9%RP/TP1C composite,with the optimal photocatalytic ability,achieves a photocatalytic H2 evolution rate of 6.93 mmol g^(-1) h^(-1),demonstrating a 10.19-fold increase compared to that of bare RP and a 4.08-fold improvement over that of pure TP1C.This article offers a novel and innovative method for the advancement of efficient COF-based photocatalysts.展开更多
Industrial high-current-density oxygen evolution catalyst is the key to accelerating the practical application of hydrogen energy.Herein,Co_(9)S_(8)/CoS heterojunctions were rationally encapsulated in S,N-codoped carb...Industrial high-current-density oxygen evolution catalyst is the key to accelerating the practical application of hydrogen energy.Herein,Co_(9)S_(8)/CoS heterojunctions were rationally encapsulated in S,N-codoped carbon((Co_(9)S_(8)/CoS)@SNC)microleaf arrays,which are rooted on S-doped carbonized wood fibers(SCWF).Benefiting from the synergistic electronic interactions on heterointerfaces and the accelerated mass transfer by array structure,the obtained self-supporting(Co_(9)S_(8)/CoS)@SNC/SCWF electrode exhibits superior performance toward alkaline oxygen evolution reaction(OER)with an ultra-low overpotential of 274 mV at 1000 mA/cm^(2),a small Tafel slope of 48.84 mV/dec,and ultralong stability up to 100 h.Theoretical calculations show that interfacing Co_(9)S_(8)with CoS can upshift the d-band center of the Co atoms and strengthen the interactions with oxygen intermediates,thereby favoring OER performance.Furthermore,the(Co_(9)S_(8)/CoS)@SNC/SCWF electrode shows outstanding rechargeability and stable cycle life in aqueous Zn-air batteries with a peak power density of 201.3 mW/cm^(2),exceeding the commercial RuO_(2)and Pt/C hybrid catalysts.This work presents a promising strategy for the design of high-current-density OER electrocatalysts from sustainable wood fiber resources,thus promoting their practical applications in the field of electrochemical energy storage and conversion.展开更多
Sonodynamic therapy(SDT)is a new non-invasive treatment method,which uses low-intensity ultrasound(US)to activate specific sonosensitizers(SNs)to produce reactive oxygen species(ROS)for therapeutic purposes.However,tr...Sonodynamic therapy(SDT)is a new non-invasive treatment method,which uses low-intensity ultrasound(US)to activate specific sonosensitizers(SNs)to produce reactive oxygen species(ROS)for therapeutic purposes.However,traditional sonosensitizers have the defects of low generation efficiency of ROS and single treatment mode.Therefore,designing sonosensitizers with high efficiency to generate ROS,high stability,and multimodal therapy is an excellent alternative to achieve effective,safe,and intelligent therapy.Heterojunction nanosonosensitizers(NSNs),as novel type of SNs,combine different materials through heterojunction structures to improve the efficiency of ROS generation.In this review,the classification of heterojunction NSNs,the preparation methods and characterization methods of heterojunction NSNs and the possible mechanisms for enhancing SDT were firstly presented,followed by an in-depth discussion of the application of heterojunction NSNs in the treatment of bacterial infections and tumors,with a special emphasis on synergistic enhancement of therapeutic efficacy of heterojunction SNs in combination with different therapeutic models such as gas therapy,immunotherapy and nanocatalytic therapy.Finally,the challenges and perspectives of such heterojunction SNs-supported SDT were outlined and highlighted to facilitate their clinical translation.展开更多
文摘The development of low-cost semiconductor photocatalysts for highly efficient and durable photocatalytic H2 evolution under visible light is very challenging.In this study,we combine low-cost metallic Ni3C cocatalysts with twin nanocrystal Zn0.5Cd0.5S(ZCS)solid solution homojunctions for an efficient visible-light-driven H2 production by a simple approach.As-synthesized Zn0.5Cd0.5S-1%Ni3C(ZCS-1)heterojunction/homojunction nanohybrid exhibited the highest photocatalytic H2-evolution rate of 783μmol h‒1 under visible light,which is 2.88 times higher than that of pristine twin nanocrystal ZCS solid solution.The apparent quantum efficiencies of ZCS and ZCS-1 are measured to be 6.13%and 19.25%at 420 nm,respectively.Specifically,the homojunctions between the zinc blende and wurtzite segments in twin nanocrystal ZCS solid solution can significantly improve the light absorption and separation of photogenerated electron-hole pairs.Furthermore,the heterojunction between ZCS and metallic Ni3C NP cocatalysts can efficiently trap excited electrons from ZCS solid solution and enhance the H2-evolution kinetics at the surface for improving catalytic activity.This study demonstrates a unique one-step strategy for constructing heterojunction/homojunction hybrid nanostructures for a more efficient photocatalytic H2 evolution compared to other noble metal photocatalytic systems.
基金supported by the National Natural Science Foundation of China (Nos.52072152 and 51802126)Jiangsu University Jinshan Professor Fund,Jiangsu Specially-Appointed Professor Fund,the Open Fund from Guangxi Key Laboratory of Electrochemical Energy Materials,Zhenjiang“Jinshan Talents”Project 2021,China PostDoctoral Science Foundation (No.2022M721372)+1 种基金the“Doctor of Entrepreneurship and Innovation”in Jiangsu Province (No.JSSCBS20221197)the Postgraduate Research&Practice Innovation Program of Jiangsu Province (No.KYCX22_3645).
文摘In the quest for effective solutions to address Environ.Pollut.and meet the escalating energy demands,heterojunction photocatalysts have emerged as a captivating and versatile technology.These photocatalysts have garnered significant interest due to their wideranging applications,including wastewater treatment,air purification,CO_(2) capture,and hydrogen generation via water splitting.This technique harnesses the power of semiconductors,which are activated under light illumination,providing the necessary energy for catalytic reactions.With visible light constituting a substantial portion(46%)of the solar spectrum,the development of visible-light-driven semiconductors has become imperative.Heterojunction photocatalysts offer a promising strategy to overcome the limitations associated with activating semiconductors under visible light.In this comprehensive review,we present the recent advancements in the field of photocatalytic degradation of contaminants across diverse media,as well as the remarkable progress made in renewable energy production.Moreover,we delve into the crucial role played by various operating parameters in influencing the photocatalytic performance of heterojunction systems.Finally,we address emerging challenges and propose novel perspectives to provide valuable insights for future advancements in this dynamic research domain.By unraveling the potential of heterojunction photocatalysts,this reviewcontributes to the broader understanding of their applications and paves the way for exciting avenues of exploration and innovation.
基金supported by the National Natural Science Foundation of China(22302019)the Changzhou Sci&Tech Program(CJ20220214).
文摘It is very appealing that 5-hydroxymethylfurfural(HMF)is electrocatalytical oxidized as 2,5-furandicarboxylic acid(FDCA)linking to non-classical cathodic hydrogen(H_(2))production.However,the electrocatalysts for electrocatalytic HMF oxidative reaction(e-HMFOR)have been facing low Faradaic efficiency(FE)and high water splitting voltage.Herein,we propose a strategy of the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction by constructing a Co-Ni paired site,where the Co site is in charge of adsorbing for HMF while the electrons are transferred to the Ni site,thus giving the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction superior electrocata lytic performances for e-HMFOR and water splitting.By optimizing conditions,the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction has high conversion of 99.7%,high selectivity of 99.9%,and high FE of 98.4%at 1.3 V,as well as low cell voltage of 1.31 V at 10 mA cm^(-2)in 1 M KOH+0.1 M HMF.This study offers a potential insight for e-HMFOR to high value-added FDCA coupling water splitting to produce H_(2)in an economical manner.
基金financially supported by the National Natural Science Foundation of China(No.22272151)Public Welfare Technology Application Research Project of Jinhua City,China(No.2023-4-022)。
文摘BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step method.The resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure ZnO.The 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and recyclability.The enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole recombination.Furthermore,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active species.Therefore,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.
基金supported by the National Key Research and Development Program of China(2020YFD1100501)Thanks zkec(www.zjkec.cc)for XRD.
文摘Fenton method combined with light to accelerate the production of free radicals from H2O2 can achieve more efficient pollutant degradation.In this paper,a novel BiOI/FeWO4 S-scheme heterojunction photocatalyst was obtained by in situ synthesis,which can activate H2O2 and degrade the organic pollutant OFC(ofloxacin)under visible light.The S-scheme charge transfer mechanism was confirmed by XPS spectroscopy,in situ KPFM and theoretical calculation.The photogenerated electrons were transferred from FeWO4 to BiOI driven by the built-in electric field and band bending,which inhibited carrier recombination and facilitated the activation of H2O2.The BiFe-5/Vis/H2O2 system degraded OFC up to 96.4%in 60 min.This study provides new systematic insights into the activation of H2O2 by S-scheme heterojunctions,which is of great significance for the treatment of antibiotic wastewater.
基金supported by National Science Fund for Distinguished Young Scholars(Grant No.52325206)National Key Research and Development Program of China(Grant No.2021YFF0500600)+3 种基金National Natural Science Foundation of China(Grant Nos.U2001220 and 52203298)Shenzhen Technical Plan Project(Grant Nos.RCJC20200714114436091,JCYJ20220530143012027,JCYJ20220818101003008,and JCYJ20220818101003007)Tsinghua Shenzhen International Graduate School-Shenzhen Pengrui Young Faculty Program of Shenzhen Pengrui Foundation(Grant No.SZPR2023006)Shenzhen Science and Technology Program(Grant No.WDZC20231126160733001).
文摘Composite solid electrolytes(CSEs)are considered among the most promising candidates for solid-state batteries.However,their practical application is hindered by low ionic conductivity and a limited lithium-ion transference number,primarily owing to the insufficient mobility of Li+.In this work,we design a heterojunc-tion nanoparticle composed of bimetallic zeolitic imidazolate frameworks(ZIFs)coupled with amorphous tita-nium oxide(TiO_(2)@Zn/Co–ZIF)as a filler to fabricate a composite solid-state electrolyte(PVZT).The amor-phous TiO_(2) coating facilitates salt dissociation through Lewis acid–base interactions with the anions of the lithium salt.Meanwhile,the Zn/Co–ZIF framework not only provides additional selective pathways for Li+transport but also effectively restricts anion migration through its confined pore size.The synergistic effect results in a high room-temperature ionic conductivity(8.8×10^(-4) S·cm^(-1))and a lithium-ion transference number of 0.47 for PVZT.A symmetrical cell using PVZT demonstrates stable Li+deposition/stripping for over 1100 h at a current density of 0.1 mA·cm^(-2).Additionally,a LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/Li full cell using PVZT retains 75.0%of its capacity after 1200 cycles at a 2 C rate.This work offers valuable insights into the design of func-tional fillers for CSEs with highly efficient ion transport.
基金Supported by National Key Research and Development Program in the 14th five year plan(2021YFA1200700)Strategic Priority Re⁃search Program of the Chinese Academy of Sciences(XDB0580000)Natural Science Foundation of China(62025405,62104235,62105348).
文摘Colloidal quantum dots(CQDs)are affected by the quantum confinement effect,which makes their bandgap tunable.This characteristic allows these materials to cover a broader infrared spectrum,providing a costeffective alternative to traditional infrared detector technology.Recently,thanks to the solution processing properties of quantum dots and their ability to integrate with silicon-based readout circuits on a single chip,infrared detectors based on HgTe CQDs have shown great application prospects.However,facing the challenges of vertically stacked photovoltaic devices,such as barrier layer matching and film non-uniformity,most devices integrated with readout circuits still use a planar structure,which limits the efficiency of light absorption and the effective separation and collection of photo-generated carriers.Here,by synthesizing high-quality HgTe CQDs and precisely controlling the interface quality,we have successfully fabricated a photovoltaic detector based on HgTe and ZnO QDs.At a working temperature of 80 K,this detector achieved a low dark current of 5.23×10^(-9)A cm^(-2),a high rectification ratio,and satisfactory detection sensitivity.This work paves a new way for the vertical integration of HgTe CQDs on silicon-based readout circuits,demonstrating their great potential in the field of high-performance infrared detection.
文摘A Co_(3)O_(4)/BiOBr heterojunction was synthesized via a facile one-step solvothermal method for highly selec-tive photocatalytic CO_(2)reduction.The optimized Co_(3)O_(4)/BiOBr-0.8 catalyst exhibited CO and CH_(4)evolution rates of 112.2 and 5.5µmol·g^(-1)·h^(-1),respectively,representing 6.3-fold and 3.9-fold enhancements over pristine BiOBr.The heterojunction demonstrated broadened light absorption,enhanced photoelectrochemical activity,reduced charge-transfer resistance,and improved separation efficiency of photogenerated carriers(e^(-)/h^(+)).These synergistic effects were attributed to the formation of a Z-scheme heterostructure,which facilitated solar energy utilization and electron reduction capacity while suppressing carrier recombination.
基金supported by the Chinese Academy of Sciences Project for Young Scientists in Basic Research(Grant No.YSBR-049)the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0302800)the Fundamental Research Funds for the Central Universities(Grant No.WK3510000013)。
文摘Recent advances in van der Waals(vdW) ferroelectrics have sparked the development of related heterostructures with non-volatile and field-tunable functionalities. In vdW ferroelectric heterojunctions, the interfacial electrical characteristics play a crucial role in determining their performance and functionality. In this study,we explore the interfacial polarization coupling in two-dimensional(2D) ferroelectric heterojunctions by fabricating a graphene/h-BN/CuInP_(2)S_(6)/α-In_(2)Se_(3)/Au ferroelectric field-effect transistor. By varying the gate electric field, the CuInP_(2)S_(6)/α-In_(2)Se_(3) heterojunction displays distinct interfacial polarization coupling states, resulting in significantly different electrical transport behaviors. Under strong gate electric fields, the migration of Cu ions further enhances the interfacial polarization effect, enabling continuous tuning of both the polarization state and carrier concentration in α-In_(2)Se_(3). Our findings offer valuable insights for the development of novel multifunctional devices based on 2D ferroelectric materials.
文摘The design of customized crystal plane heterojunction can effectively leverage the optimal anisotropic interaction of crystal plane,thereby enhancing photocatalytic activity.In this study,Co_(3)O_(4) exposed(111),(110),and(100)crystal planes(designated as HCO,NCO,and CCO,respectively)were synthesized and successfully coupled with Cd_(0.5)Zn_(0.5)S(CZS).Among these composites,the HCO/CZS exhibited best hydrogen evolution activity.In conjunction with DFT calculations and femtosecond transient absorption spectroscopy,it has been found that:the crystal plane interaction between HCO and CZS enabled the composite catalyst to exhibit optimal anisotropy in crystal plane carrier transport,crystal plane active sites,and crystal plane electronic structure.This interaction induces a redistribution of electrons at their contact interface,thereby establishing a built-in electric field that facilitates the formation of ohmic heterojunction between HCO and CZS.The synergistic effect of the ohmic heterojunction and crystal plane anisotropy not only decreases the Gibbs free energy of hydrogen adsorption but also facilitates the efficient spatial separation and rapid transfer of electron-hole pairs.This study offers valuable insights into the customization of crystal plane heterojunctions,aiming to maximize anisotropic interactions between crystal planes in order to enhance photocatalytic hydrogen evolution.
基金the National Natural Science Foundation of China(52302351,32271392)National Key Research and Development Program of China(2022YFC2405703)+2 种基金Natural Science Foundation of Sichuan(2024NSFSC1239,2024NSFSC0217)China Postdoctoral Science Foundation(2023M732477,2024T170615)Chengdu Science and Technology Bureau Funding(2024-YF05-00026-SN).
文摘Background:Bacterial infection significantly poses an obstacle to wound healing because the skin is in direct contact with the outside.Current antibiotic therapies may contribute to the appearance of the drug-resistant bacteria,reducing the effectiveness of therapeutic interventions.Thus,a safe and efficiency antibacterial strategy is in an urgent demand.Methods:To address this issue,MXene/MgO_(2)@Succinic acid(MMS)bio-heterojunction with excellent photothermal capability has been developed by hydrothermal method and surface modification in this work.MMS generates localized heat under near-infrared laser irradiation that could interfere with the normal physiological functions of the bacteria,ultimately leading to bacterial inactivation.Results:The experiments verify that the MXene/MgO_(2)@Succinic acid exhibits favorable photo-inspired capability and antibacterial property against Staphylococcus aureus(S.aureus)with an antibacterial rate of 98.7%.Conclusion:This innovative approach shows promising potential for treating infected wounds and promoting skin regeneration,offering a superior alternative to traditional antibiotic therapies.It provides a solution to combat bacterial infections without contributing to antimicrobial resistance.
基金supported by the National Natural Science Foundation of China(Grant No.52372281)the Fundamental Research Funds for the Central Universities(2232020G-07)+3 种基金the foundation of Shanghai Institute of Technology(grant no.YJ2022-37)the Graduate Student Innovation Fund of Donghua University(CUSF-DH-D-2022007)the State Key Laboratory of Advanced Fiber Materials(KF2517)the Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning。
文摘Lithium-sulfur(Li-S)batteries promise high energy density but suffer from low conductivity,polysulfide shuttling,and sluggish conversion kinetics.The construction of heterointerfaces is an effective strategy for enhancing both polysulfide adsorption and conversion;however,the poor lattice compatibility in the heterointerface formed by different materials hinders interfacial charge transfer.In response to these challenges,herein,a biphasic homojunction of TiO_(2)enriched with oxygen vacancies and decorated with nitrogen-doped carbon nanotubes(B-TiO_(2-x)@NCNT)was designed to simultaneously enhance adsorption ability and catalytic activity.This homojunction interface composed of rutile(110)and anatase(101)plane exhibits excellent compatibility,and density functional theory(DFT)calculations reveal that this biphasic interface possesses a much higher binding energy to polysulfides compared to single-phase TiO_(2).Additionally,NCNTs are in situ grown on both interior and exterior surfaces of the hollow TiO_(2)nanospheres,facilitating rapid electron transfer for the encapsulated sulfur.The homojunction interface synergistically leverages the oxygen vacancies and highly conductive NCNTs to enhance the bidirectional catalytic activity for polysulfide conversion.Therefore,in this multifunctional sulfur-host,polysulfides are first strongly adsorbed at the homojunction interfaces and subsequently undergo smooth conversion,nucleation,and decomposition,completing a rapid sulfur redox cycle.The assembled Li-S battery delivered a high specific capacity of 1234.3 mAh g^(-1)at 0.2 C,long cycling stability for over 1000 cycles at 5 C with a low decay rate of 0.035%,and exciting areal capacity at a high sulfur loading of 5.6 mg cm^(-2)for 200cycles.
基金financially supported by the National Natural Science Foundation of China(Nos.51872116,12034002,and 22279044)Jilin Province Science and Technology Development Program(No.20210301009GX)+1 种基金project for Self-innovation Capability Construction of Jilin Province Development and Reform Commission(No.2021C026)the Fundamental Research Funds for the Central Universities,and City University of Hong Kong(No.CityU 9610577).
文摘Solar hydrogen production via water splitting is pivotal for solar energy harnessing,addressing key challenges in energy and environmental sustainability.However,two critical issues persist with single-component photocatalysts:suboptimal carrier transport and inadequate light absorption.While heterojunction-based artificial photosynthetic systems like Z-scheme photocatalysts have been explored,their charge recombination and light harvesting efficiency are still unsatisfactory.S-scheme heterojunctions have gained attention in photocatalysis,owing to their pronounced built-in electric field and superior redox capabilities.In this study,we introduce a MXene-based S-scheme H-TiO_(2)/g-C_(3)N_(4)/Ti_(3)C_(2)heterojunction(TCMX),synthesized through electrostatic self-assembly.The as-prepared TCMX exhibited an excellent photocatalytic hydrogen evolution rate of 53.67 mmol g^(-1)h^(-1)surpassing the performance of commercial Rutile TiO_(2),H-TiO_(2),g-C_(3)N_(4),and HTCN.The effectiveness of TCMX is largely due to the builtin electric field in the S-scheme heterojunction and the cocatalytic activity of MXene promoting rapid separation of photogenerated charges and resulting in well-separated electron and hole enriched sites.This study offers a new approach to enhance photocatalytic hydrogen evolution efficiency and paves the way for the future design of S-scheme heterojunctions.
文摘Antibiotics and heavy metals usually co-exist in wastewater and pose serious environmental hazards.Herein,a series of VMo-BMO/O_(v)-BOB S-scheme heterojunctions with double vacancy(Mo vacancy and photoexcited O vacancy)were constructed via an electrostatic assembly method.The removal efficiency of Cr(VI)and tetracycline(TC)over VMo-BMO/O_(v)-BOB-0.3 was 2.47 and 1.13 times than that of a single system,respectively.In-situ EPR demonstrated that the surface O vacancies could be generated under LED light irradiation.These photoexcited O vacancies(P-O_(v))enabled VMo-BMO/O_(v)-BOB composites still exhibit satisfactory activity after five successive cycles and an amplified Fermi level gap.The enhancement could be attributed to the enhanced internal electric field and double-vacancy-induced polarization.Additionally,the density functional theory calculation results suggested that double vacancy induced polarization electric field increases the dipole moment,which was conducive to rapid electron transport.Photoluminescence and time-resolved photoluminescence analysis demonstrated that the introduction of S-scheme heterojunction and double vacancy promoted charge transfer and prolonged the lifetime of carriers.Degradation intermediates and toxicity of products were evaluated.In conclusion,a possible mechanism based on VMo-BMO/O_(v)-BOB S-scheme heterojunction in the simultaneous removal of Cr(VI)and TC was proposed.
基金Project supported by the National Key Research and Development Program of China(2022YFB3504100,2021YFB3500600)Chunhui Project Foundation of the Education Department of China(202200554)。
文摘The rapid development of rare earth metal elements in the field of photocatalysis is due to their excellent optical and physicochemical properties.Benefiting from the unique external electronic structure of 4f_15d_16S_2,superior electronegativity of the 4f orbitals,and strong oxygen storage-release ability in Ce^(4+)/Ce^(3+)reversible pairs,cerium dioxide(CeO_(2))has attracted increasing interest from scientists.Nevertheless,the fast recombination of photoinduced electron-hole pairs and wide energy band gap of bare CeO_(2)significantly limit its practical applications.To overcome the above drawbacks,the construction of heterojunctions has been developed to broaden the absorption spectrum and accelerate the charge transfer.This review presents a mini-review of the synthesis of CeO_(2)-based heterojunctions including typeⅡ,Z-scheme,and S-scheme photocatalysts,as well as the corresponding applications in photocatalytic bactericidal and antitumor therapy.Finally,the latest advancements and potential perspectives on their future development are also discussed.
文摘Sulfide photocatalysts are one of the widely recognized excellent photocatalysts.However,the stability of sulfide photocatalysts has always been a challenging problem in the field of photocatalysis.Herein,an in-situ oxidation strategy was designed to construct ZnO/ZnS homologous S-scheme catalysts and solve its poor stability problem.The results indicates that the obtained ZnO/ZnS homologous heterojunction not only has dual-function performance,but also has good recover ability in photocatalytic performance:the photocatalytic H_(2)O_(2)yield can reach 517.32μmol g^(–1)(in pure water)after two hours,the photocatalytic H_(2)yield is 140.45 mmol g^(–1)in 5 h,which were 2.2 times and 84 times than that of the ZnS,respectively.Excitingly,the recovery rate of photocatalytic performance can be increased from 33.3%to 97.2%.The excellent photocatalytic performance is attributed to that the obtained homologous heterojunction can not only broaden the light absorption capacity(370–600 nm),but also facilitate the separation and transfer of photogenerated electrons.The high recovery rate of photocatalytic stability is due to the re-generation of zinc oxide in the oxidation process,which makes the photocatalyst return to the original homologous heterojunction structure.Meanwhile,experimental results,density functional theory calculations and Kelvin probe force microscopy indicate that the photo-induced carrier transfer pathway follows the S-scheme heterojunction mechanism.This work provides new ideas and breakthroughs for the design and construction of sulfide photocatalysts with excellent photocatalytic stability.
基金supported by the Regional Innovation and Development Joint Fund of the National Nature Science Foundation of China(Grant No.U21A2071).
文摘Amorphous InGaZnO(IGZO)is a potential candidate for integrated circuits based on thin-film transistors(TFTs)owing to its low-temperature processability and high mobility.Amorphous InGaMgO/InGaZnO(IGMO/IGZO)heterojunction was deposited and TFTs based on IGMO/IGZO heterojunction were fabricated in this report.The energy band at the IGMO/IGZO heterojunction was characterized,and the potential well at the interface of IGZO is critical to the enhanced ultraviolet detection of the IGMO/IGZO heterojunction.Furthermore,the TFTs based on IGMO/IGZO heterojunction exhibited a high responsivity of 3.8×10^(3) A/W and a large detectivity of 5.2×10^(14) Jones under 350-nm ultraviolet illumination,which will also benefit for fabrication of monolithic ultraviolet sensing chip.
基金supported by the National Natural Science Foundation of China(Nos.52071171,52202248,22101105)Liaoning Province Centrally Guided Local Science and Technology Development Fund Program(2024JH6/100700010,2024JH6/100700011)+8 种基金Open Project of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry(2024-35)Open Research Fund of Guangdong Advanced Carbon Materials Co.,Ltd.(Kargen-2024B1001),and Key Research Project of Department of Education of Liaoning Province(LJKZZ20220015)T.M.acknowledged the Australian Research Council(ARC)through Future Fellowship(FT210100298)Discovery Project(DP220100603)Linkage Project(LP210200504,LP220100088,LP230200897)Industrial Transformation Research Hub(IH240100009)schemesthe Australian Government through the Cooperative Research Centres Projects(CRCPXIII000077)the Australian Renewable Energy Agency(ARENA)as part of ARENA's Transformative Research Accelerating Commercialisation Program(TM021)European Commission's Australia-Spain Network for Innovation and Research Excellence(AuSpire)。
文摘Covalent organic frameworks(COFs)are newly developed crystalline substances that are garnering growing interest because of their ultrahigh porosity,crystalline nature,and easy-modified architecture,showing promise in the field of photocatalysis.However,it is difficult for pure COFs materials to achieve excellent photocatalytic hydrogen production due to their severe carrier recombination problems.To mitigate this crucial issue,establishing heterojunction is deemed an effective approach.Nonetheless,many of the metal-containing materials that have been used to construct heterojunctions with COFs own a number of drawbacks,including small specific surface area and rare active sites(for inorganic semiconductor materials),wider bandgaps and higher preparation costs(for MOFs).Therefore,it is necessary to choose metal-free materials that are easy to prepare.Red phosphorus(RP),as a semiconductor material without metal components,with suitable bandgap,moderate redox potential,relatively minimal toxicity,is affordable and readily available.Herein,a range of RP/TpPa-1-COF(RP/TP1C)composites have been successfully prepared through solvothermal method.The two-dimensional structure of the two materials causes strong interactions between the materials,and the construction of heterojunctions effectively inhibits the recombination of photogenic charge carriers.As a consequence,the 9%RP/TP1C composite,with the optimal photocatalytic ability,achieves a photocatalytic H2 evolution rate of 6.93 mmol g^(-1) h^(-1),demonstrating a 10.19-fold increase compared to that of bare RP and a 4.08-fold improvement over that of pure TP1C.This article offers a novel and innovative method for the advancement of efficient COF-based photocatalysts.
基金supported by National Key Research and Development Program of China(No.2023YFD2200503)the Young Elite Scientists Sponsorship Program from National Forestry and Grassland Administration of China(No.2019132614)+1 种基金the Science and Technology Innovation Program of Hunan Province(Nos.2021RC3103 and 2022RC3054)the Scientific Research Project of Hunan Provincial Education Department(Nos.23B0276 and 21B0225).
文摘Industrial high-current-density oxygen evolution catalyst is the key to accelerating the practical application of hydrogen energy.Herein,Co_(9)S_(8)/CoS heterojunctions were rationally encapsulated in S,N-codoped carbon((Co_(9)S_(8)/CoS)@SNC)microleaf arrays,which are rooted on S-doped carbonized wood fibers(SCWF).Benefiting from the synergistic electronic interactions on heterointerfaces and the accelerated mass transfer by array structure,the obtained self-supporting(Co_(9)S_(8)/CoS)@SNC/SCWF electrode exhibits superior performance toward alkaline oxygen evolution reaction(OER)with an ultra-low overpotential of 274 mV at 1000 mA/cm^(2),a small Tafel slope of 48.84 mV/dec,and ultralong stability up to 100 h.Theoretical calculations show that interfacing Co_(9)S_(8)with CoS can upshift the d-band center of the Co atoms and strengthen the interactions with oxygen intermediates,thereby favoring OER performance.Furthermore,the(Co_(9)S_(8)/CoS)@SNC/SCWF electrode shows outstanding rechargeability and stable cycle life in aqueous Zn-air batteries with a peak power density of 201.3 mW/cm^(2),exceeding the commercial RuO_(2)and Pt/C hybrid catalysts.This work presents a promising strategy for the design of high-current-density OER electrocatalysts from sustainable wood fiber resources,thus promoting their practical applications in the field of electrochemical energy storage and conversion.
基金supported by Key Research Project of the Educational Department of Liaoning Province,China(No.JYTZD2023139).
文摘Sonodynamic therapy(SDT)is a new non-invasive treatment method,which uses low-intensity ultrasound(US)to activate specific sonosensitizers(SNs)to produce reactive oxygen species(ROS)for therapeutic purposes.However,traditional sonosensitizers have the defects of low generation efficiency of ROS and single treatment mode.Therefore,designing sonosensitizers with high efficiency to generate ROS,high stability,and multimodal therapy is an excellent alternative to achieve effective,safe,and intelligent therapy.Heterojunction nanosonosensitizers(NSNs),as novel type of SNs,combine different materials through heterojunction structures to improve the efficiency of ROS generation.In this review,the classification of heterojunction NSNs,the preparation methods and characterization methods of heterojunction NSNs and the possible mechanisms for enhancing SDT were firstly presented,followed by an in-depth discussion of the application of heterojunction NSNs in the treatment of bacterial infections and tumors,with a special emphasis on synergistic enhancement of therapeutic efficacy of heterojunction SNs in combination with different therapeutic models such as gas therapy,immunotherapy and nanocatalytic therapy.Finally,the challenges and perspectives of such heterojunction SNs-supported SDT were outlined and highlighted to facilitate their clinical translation.
