Despite advances in current anti-cancer therapies,challenges such as drug resistance,toxicity,and tumor heterogeneity persist.The limitations of traditional single-target drugs and simple combination therapies are bec...Despite advances in current anti-cancer therapies,challenges such as drug resistance,toxicity,and tumor heterogeneity persist.The limitations of traditional single-target drugs and simple combination therapies are becoming increasingly apparent1.To address these issues,a novel treatment strategy,the artificially intelligent synergistic engineered drug(AISED)paradigm,merits further exploration.This paradigm is based on the systematic engineered integration of multiple active ingredients into a unified single entity through artificial intelligence(AI).This strategy is aimed at developing new anti-cancer drug designs involving multiple ingredients,multiple molecular targets,and multiple biological effects,for multiple cancer types,thereby providing a novel theoretical paradigm for overcoming existing treatment bottlenecks.展开更多
The photocatalytic reduction of soluble U(VI)offers a sustainable pathway for nuclear wastewater remediation,yet conventional systems face persistent challenges including low efficiency,limited stability,and economic ...The photocatalytic reduction of soluble U(VI)offers a sustainable pathway for nuclear wastewater remediation,yet conventional systems face persistent challenges including low efficiency,limited stability,and economic problems.Herein,we address these limitations by constructing a Schottky junction between Mn_(0.3)Cd_(0.7)S and Ti_(3)C_(2)T_(x)MXene via a hydrothermal strategy.The optimized heterostructure achieves complete U(VI)removal within 30 min under visible light without any sacrificial agents with a maximum capacity of 831.74 mg g^(−1).Through combined Kelvin probe force microscopy(KPFM)and density functional theory(DFT)simulations,it is confirmed that the internal built-in electric field with band bending drives directional electron transfer from Mn_(0.3)Cd_(0.7)S to Ti_(3)C_(2)T_(x),substantially enhancing charge separation.Furthermore,the MXene co-catalyst extends visible-light absorption,stabilizes photogenerated carriers,and provides abundant active sites,addressing key limitations of conventional semiconductor systems.This work establishes an efficient and stable non-precious-metal photocatalyst for uranium extraction,offering a general design principle for Schottky-based architectures targeting advanced environmental purification.展开更多
By employing carbon-packed zeolite nanocrystals as primary building blocks,hierarchically porous MFItype zeolites with precise dimensions spanning meso-and micro-length scales were successfully synthesized using an in...By employing carbon-packed zeolite nanocrystals as primary building blocks,hierarchically porous MFItype zeolites with precise dimensions spanning meso-and micro-length scales were successfully synthesized using an in situ crystallization strategy.The generalized Murray’s law was firstly used to theoretically investigate the advantage of the porous hierarchy of the zeolites.The porosity distribution and coordination in the resultant zeolite crystals were found to be basically following the generalized Murray’s law.Probing using the catalytic cracking reaction of isopropyl benzene revealed that as-prepared HierZSM-5 exhibited much higher conversion(∼74.5%),compared with nanoZSM-5(∼30%)and bulky ZSM-5(∼28.6%).The outstanding catalytic performance was ascribed to the highly enhanced mass transfer of the Murray zeolite material in the heterogeneous catalytic reaction.Such a hierarchical single zeolite structure,designed by adopting the generalized Murray’s law,can improve the thermal/hydrothermal stability of nanozeolites,and offer an alternative option for a long-term stable catalyst.展开更多
Two-dimensional fence-like Co-doped NiSe_(2)/C(Co-NiSe_(2)/C)nanosheets are fabricated via a facile solvothermal method followed by a selenization strategy.The Co-NiSe_(2)/C nanosheets are composed of interlaced nanor...Two-dimensional fence-like Co-doped NiSe_(2)/C(Co-NiSe_(2)/C)nanosheets are fabricated via a facile solvothermal method followed by a selenization strategy.The Co-NiSe_(2)/C nanosheets are composed of interlaced nanorods,which are made up of small nanoparticles with a size of 20 nm.The surfaces of these small nanoparticles are covered in thin carbon layers.展开更多
Zero-dimensional(0D)lead-free all-inorganic metal halides have emerged as next-generation photoluminescent(PL)materials in recent years because of their extraordinary PL properties,non-toxicity,and high stability.Here...Zero-dimensional(0D)lead-free all-inorganic metal halides have emerged as next-generation photoluminescent(PL)materials in recent years because of their extraordinary PL properties,non-toxicity,and high stability.Herein,a green,high stability,all-inorganic Rb_(2)CsBiCl_(6) single crystal with 0D structure was grown as a new PL material.Strikingly,using the antimony doping strategy,the broad yellow emission of Rb_(2)CsBiCl_(6) was significantly enhanced due to the enhanced absorption in the UV region,and the PL quantum yield was increased from 1%to 45%at room temperature.Furthermore,the fluorescent mechanism was revealed by the combination of optical characterizations and first-principles calculations.展开更多
Photocatalytic detoxification of highly toxic agents is a promising approach to protect the ecological environment and human health,and the key problem lies in the development of novel efficient photoca-talysts.Herein...Photocatalytic detoxification of highly toxic agents is a promising approach to protect the ecological environment and human health,and the key problem lies in the development of novel efficient photoca-talysts.Herein,we report a 2D versatile photocatalyst[Co^(Ⅱ)(bcbpy)_(2)(θ-Mo_(8)O_(26))_(0.5)]·5H_(2)O(BHU-1,bcbpy=1-(4-carboxybenzyl)-4,4’-bipyridinium)by incorporating isopolymolybdate into a cobalt-viologen frame-work using a structural design strategy.The photocatalytic performance of BHU-1 was evaluated by 2-chloroethyl ethyl sulfide(CEES)oxidation,Cr(VI)reduction and RhB decolorization.BHU-1 exhibits an effective photogenerated electron-hole separation rate.Under visible light irradiation as a representative condition,the photooxidation conversion of CEES is 98%with 97%selectivity to CEESO within only 5 min;the photoreduction rate of Cr(Ⅵ)to Cr(Ⅲ)reached 95%within 30 min;the photocatalytic decolori-zation rate of RhB is 100%within 90 min.Additionally,the photocatalytic effects of BHU-1 under full spectrum and NIR light irradiation were also studied.Electron paramagnetic resonance(EPR)spectra and the bandgap energy further demonstrate the accuracy of the electron transport.Furthermore,the photo-catalytic reaction kinetics and the mechanisms of the above three photocatalytic processes were studied in detail.展开更多
The fabrication of nonlinear optical(NLO)materials that exhibit both a pronounced second harmonic generation(SHG)response and a broad ultraviolet(UV)transmission range remains a big challenge.In this study,we employed...The fabrication of nonlinear optical(NLO)materials that exhibit both a pronounced second harmonic generation(SHG)response and a broad ultraviolet(UV)transmission range remains a big challenge.In this study,we employed a flux method to extract a potential rare-earth borate UV NLO crystal,K_(7.5)Lu_(2.5)B_(15)O_(30),by the chemical cosubstitution strategy.The title compound crystallizes in the trigonal space group R32(no.155)with a three-dimensional structural framework consisting of[B5O10]and[LuO6]groups.Remarkably,K_(7.5)Lu_(2.5)B_(15)O_(30) possesses a notably short cutoff edge of 198 nm and a wide band gap of 6.3 eV.Moreover,it demonstrates a strong phase-matched SHG efficiency of 1.2×KDP,which represents an optimal balance between a strong NLO effect and a wide UV transmission range.Besides,theoretical calculations and structural analyses unveil that the NLO properties observed in K_(7.5)Lu_(2.5)B_(15)O_(30) are primarily attributable to the synergistic effect of the[B5O10]groups and[LuO6]octahedra.These findings indicate that K_(7.5)Lu_(2.5)B_(15)O_(30) has potential applications as beryllium-free UV NLO materials.展开更多
1 Introduction 1.1 Research Background As a major national development strategy,the Rural Revitalization Strategy explicitly proposes to"promote the revitalization of rural industries,talents,culture,ecology,and ...1 Introduction 1.1 Research Background As a major national development strategy,the Rural Revitalization Strategy explicitly proposes to"promote the revitalization of rural industries,talents,culture,ecology,and organizations."The rural cultural and tourism industry,as a comprehensive sector integrating primary,secondary,and tertiary industries,serves as a key vehicle for activating rural economic vitality,inheriting rural culture,and promoting the return of talents.In recent years,China's rural cultural and tourism industry has shown rapid development.In 2023,the number of rural tourism visitors nationwide reached 4.7 billion,accounting for 58.3%of the total domestic tourism visits,with total rural tourism revenue reaching 3.2 trillion yuan,making it an important engine for rural economic growth.However,the development of the rural cultural and tourism industry also faces many bottlenecks:on one hand,rural cultural and tourism enterprises generally suffer from shortages of management talents,crude business models,and severe product homogenization[1].According to research data from the China Tourism Association,72%of rural cultural and tourism enterprises consider"insufficient professional management talents"as the primary factor constraining their development.On the other hand,tourism management education is out of sync with the needs of the rural cultural and tourism industry.University tourism management programs tend to focus on general knowledge,with insufficient integration of local rural cultural and tourism resources,making it difficult for graduates to quickly adapt to the actual job requirements of rural cultural and tourism enterprises.展开更多
Facile synthesis of single-atom catalytic sites on various supports for the electrochemical carbon dioxide reduction reaction(CO_(2)RR)has attracted increasing attention.Herein,atomically dispersed Ni species supporte...Facile synthesis of single-atom catalytic sites on various supports for the electrochemical carbon dioxide reduction reaction(CO_(2)RR)has attracted increasing attention.Herein,atomically dispersed Ni species supported on nitrogen-doped hollow carbon spheres(SA-Ni/N-CS)were fabricated by using a semisacrificial template strategy.The obtained SA-Ni/N-CS was employed as an electrocatalyst for the CO_(2)RR.We found that the SA-Ni/N-CS displayed ultra-high efficiency and selectivity for CO_(2) conversion into CO with a faradaic efficiency(FE)of 95.1%.Moreover,the SA-Ni/N-CS also exhibited an excellent stability with current density and FE maintained over 99%and 95%,respectively,after 24 h of the CO_(2)RR test.Furthermore,density functional theory(DFT)calculations revealed that the CO_(2) activation process with an activation energy barrier of 2.16 eV is the reaction control step when using SA-Ni/N-CS as a CO_(2)RR catalyst.This work will open up the opportunity for the hard-template synthesis of novel single-atom catalysts for application in electrocatalysis,and suggests that promoting the CO_(2) activation process could be a crucial approach to boosting the CO_(2)RR.展开更多
The BiVO_(4)photoanode holds a significant competitive edge for industrialization due to its high theoretical photocurrent density and solar-to-hydrogen conversion efficiency but is challenged by poor reaction kinetic...The BiVO_(4)photoanode holds a significant competitive edge for industrialization due to its high theoretical photocurrent density and solar-to-hydrogen conversion efficiency but is challenged by poor reaction kinetics and stability.Here,a conformal and superhydrophilic layer of phytic acid coordinated with nickel and iron(PA-NiFe)was in situ deposited on the surface of the BiVO_(4)photoanode via a facile interfacial coordination assembly strategy.The BiVO_(4)@PA-NiFe photoanode achieved a high photocurrent density of 4.58 mA cm^(−2)and a surface charge separation efficiency of 84.5%,which are 3.23 and 1.91 times higher than those of the pristine BiVO_(4)photoanode,respectively.Moreover,the BiVO_(4)@PA-NiFe photoanode exhibited excellent durability during a 6-hour stability assessment.The enhanced surface charge separation and the improved potential-limiting step during the oxygen evolution reaction contribute to improved photoelectrochemical performances.This work underscores a competitive strategy for developing metal–organic complexes to advance the development of efficient photoanodes.展开更多
Transition metal nitrides are highly valued owing to their unique properties and diverse applications in coatings,lighting applications,and energy storage.However,the development two-dimensional(2D)metal nitrides pres...Transition metal nitrides are highly valued owing to their unique properties and diverse applications in coatings,lighting applications,and energy storage.However,the development two-dimensional(2D)metal nitrides presents a significant challenge owing to their strong atomic bonds.Herein,we introduce a family of 2D multicomponent metal nitrides,metal tungsten nitride(MWN_(2))nanosheets,via a precursor minimization and nitridation strategy.The composition of M and the stoichiometric ratio can be readily tailored,enabling the successful preparation of high-entropy(FeCoNiMn)WN_(2)nanosheets.Prominently,the high-entropy MWN_(2)nanosheets demonstrate superior oxygen evolution with an overpotential of only 228 mV at 10 mA cm^(−2)and exceptional stability,exhibiting a degradation rate of merely 15μV h^(−1)over 1000 hours.Theoretical insights reveal that antisite defects substantially lower the oxygen adsorption energy.This work sheds light on the highly active and stable catalytic properties of 2D metal nitrides for water oxidation.展开更多
文摘Despite advances in current anti-cancer therapies,challenges such as drug resistance,toxicity,and tumor heterogeneity persist.The limitations of traditional single-target drugs and simple combination therapies are becoming increasingly apparent1.To address these issues,a novel treatment strategy,the artificially intelligent synergistic engineered drug(AISED)paradigm,merits further exploration.This paradigm is based on the systematic engineered integration of multiple active ingredients into a unified single entity through artificial intelligence(AI).This strategy is aimed at developing new anti-cancer drug designs involving multiple ingredients,multiple molecular targets,and multiple biological effects,for multiple cancer types,thereby providing a novel theoretical paradigm for overcoming existing treatment bottlenecks.
基金the National Natural Science Foundation of China(22166001,22466003)the Natural Science Foundation of Jiangxi Province(20232BCJ23017,20232BCJ23097,20242BAB23023,20224BAB203028,20242BAB26037,S20250003)+1 种基金the National Key Laboratory of Uranium Resources Exploration-Mining and Nuclear Remote Sensing(2025QZ-YZZ-01)the Young Elite Scientists Sponsorship Program by JXAST(2024QT11).
文摘The photocatalytic reduction of soluble U(VI)offers a sustainable pathway for nuclear wastewater remediation,yet conventional systems face persistent challenges including low efficiency,limited stability,and economic problems.Herein,we address these limitations by constructing a Schottky junction between Mn_(0.3)Cd_(0.7)S and Ti_(3)C_(2)T_(x)MXene via a hydrothermal strategy.The optimized heterostructure achieves complete U(VI)removal within 30 min under visible light without any sacrificial agents with a maximum capacity of 831.74 mg g^(−1).Through combined Kelvin probe force microscopy(KPFM)and density functional theory(DFT)simulations,it is confirmed that the internal built-in electric field with band bending drives directional electron transfer from Mn_(0.3)Cd_(0.7)S to Ti_(3)C_(2)T_(x),substantially enhancing charge separation.Furthermore,the MXene co-catalyst extends visible-light absorption,stabilizes photogenerated carriers,and provides abundant active sites,addressing key limitations of conventional semiconductor systems.This work establishes an efficient and stable non-precious-metal photocatalyst for uranium extraction,offering a general design principle for Schottky-based architectures targeting advanced environmental purification.
基金supported by Program for Changjiang Scholars and Innovative Research Team in University(IRT_15R52)of the Chinese Ministry of Education.B.L.Su acknowledges the Chinese Central Government for an“Expert of the State”position in the Program of the“Thousand Talents”,the Chinese Ministry of Education for a“Changjiang Chaire Professor”position and a Clare Hall Life Membership at the Clare Hall College and the financial support of the Department of Chemistry,University of Cambridge.L.H.Chen acknowledges Hubei Provincial Department of Education for the“Chutian Scholar”programThis work is also financially supported by NSFC-21671155,NSFC-U1663225+2 种基金Major programs of technical innovation in Hubei(2018AAA012)Hubei Provincial Natural Science Foundation(2018CFA054)Shanghai Rising-Star Program(18QB1404500).
文摘By employing carbon-packed zeolite nanocrystals as primary building blocks,hierarchically porous MFItype zeolites with precise dimensions spanning meso-and micro-length scales were successfully synthesized using an in situ crystallization strategy.The generalized Murray’s law was firstly used to theoretically investigate the advantage of the porous hierarchy of the zeolites.The porosity distribution and coordination in the resultant zeolite crystals were found to be basically following the generalized Murray’s law.Probing using the catalytic cracking reaction of isopropyl benzene revealed that as-prepared HierZSM-5 exhibited much higher conversion(∼74.5%),compared with nanoZSM-5(∼30%)and bulky ZSM-5(∼28.6%).The outstanding catalytic performance was ascribed to the highly enhanced mass transfer of the Murray zeolite material in the heterogeneous catalytic reaction.Such a hierarchical single zeolite structure,designed by adopting the generalized Murray’s law,can improve the thermal/hydrothermal stability of nanozeolites,and offer an alternative option for a long-term stable catalyst.
基金funded by the National Natural Science Foundation of China(grant number 11774188)the Natural Science Foundation of Shandong Province(grant number ZR2018QB003)the Youth Innovation and Technology Support Plan of Shandong Province(No.2019KJA006).
文摘Two-dimensional fence-like Co-doped NiSe_(2)/C(Co-NiSe_(2)/C)nanosheets are fabricated via a facile solvothermal method followed by a selenization strategy.The Co-NiSe_(2)/C nanosheets are composed of interlaced nanorods,which are made up of small nanoparticles with a size of 20 nm.The surfaces of these small nanoparticles are covered in thin carbon layers.
基金supported by the Natural Science Foundation of Shandong Province(ZR2020MF128,ZR2021MB059)the Key projects of Natural Science Foundation of Shandong Province(ZR2020KB014)the Key Research Program of the Chinese Academy of Sciences(ZDRW-CN-2021-3).
文摘Zero-dimensional(0D)lead-free all-inorganic metal halides have emerged as next-generation photoluminescent(PL)materials in recent years because of their extraordinary PL properties,non-toxicity,and high stability.Herein,a green,high stability,all-inorganic Rb_(2)CsBiCl_(6) single crystal with 0D structure was grown as a new PL material.Strikingly,using the antimony doping strategy,the broad yellow emission of Rb_(2)CsBiCl_(6) was significantly enhanced due to the enhanced absorption in the UV region,and the PL quantum yield was increased from 1%to 45%at room temperature.Furthermore,the fluorescent mechanism was revealed by the combination of optical characterizations and first-principles calculations.
基金supported by the NSFC(no.21901018,21971024)the China Postdoctoral Science Foundation funded project(no.2019M650498)the Liao Ning Revitalization Talents Program(XLYC1902011).
文摘Photocatalytic detoxification of highly toxic agents is a promising approach to protect the ecological environment and human health,and the key problem lies in the development of novel efficient photoca-talysts.Herein,we report a 2D versatile photocatalyst[Co^(Ⅱ)(bcbpy)_(2)(θ-Mo_(8)O_(26))_(0.5)]·5H_(2)O(BHU-1,bcbpy=1-(4-carboxybenzyl)-4,4’-bipyridinium)by incorporating isopolymolybdate into a cobalt-viologen frame-work using a structural design strategy.The photocatalytic performance of BHU-1 was evaluated by 2-chloroethyl ethyl sulfide(CEES)oxidation,Cr(VI)reduction and RhB decolorization.BHU-1 exhibits an effective photogenerated electron-hole separation rate.Under visible light irradiation as a representative condition,the photooxidation conversion of CEES is 98%with 97%selectivity to CEESO within only 5 min;the photoreduction rate of Cr(Ⅵ)to Cr(Ⅲ)reached 95%within 30 min;the photocatalytic decolori-zation rate of RhB is 100%within 90 min.Additionally,the photocatalytic effects of BHU-1 under full spectrum and NIR light irradiation were also studied.Electron paramagnetic resonance(EPR)spectra and the bandgap energy further demonstrate the accuracy of the electron transport.Furthermore,the photo-catalytic reaction kinetics and the mechanisms of the above three photocatalytic processes were studied in detail.
基金supported by the National Key R&D Program of China(2021YFA0717800)the National Natural Science Foundation of China(Grant No.62475191,52002273,and 62104124).
文摘The fabrication of nonlinear optical(NLO)materials that exhibit both a pronounced second harmonic generation(SHG)response and a broad ultraviolet(UV)transmission range remains a big challenge.In this study,we employed a flux method to extract a potential rare-earth borate UV NLO crystal,K_(7.5)Lu_(2.5)B_(15)O_(30),by the chemical cosubstitution strategy.The title compound crystallizes in the trigonal space group R32(no.155)with a three-dimensional structural framework consisting of[B5O10]and[LuO6]groups.Remarkably,K_(7.5)Lu_(2.5)B_(15)O_(30) possesses a notably short cutoff edge of 198 nm and a wide band gap of 6.3 eV.Moreover,it demonstrates a strong phase-matched SHG efficiency of 1.2×KDP,which represents an optimal balance between a strong NLO effect and a wide UV transmission range.Besides,theoretical calculations and structural analyses unveil that the NLO properties observed in K_(7.5)Lu_(2.5)B_(15)O_(30) are primarily attributable to the synergistic effect of the[B5O10]groups and[LuO6]octahedra.These findings indicate that K_(7.5)Lu_(2.5)B_(15)O_(30) has potential applications as beryllium-free UV NLO materials.
文摘1 Introduction 1.1 Research Background As a major national development strategy,the Rural Revitalization Strategy explicitly proposes to"promote the revitalization of rural industries,talents,culture,ecology,and organizations."The rural cultural and tourism industry,as a comprehensive sector integrating primary,secondary,and tertiary industries,serves as a key vehicle for activating rural economic vitality,inheriting rural culture,and promoting the return of talents.In recent years,China's rural cultural and tourism industry has shown rapid development.In 2023,the number of rural tourism visitors nationwide reached 4.7 billion,accounting for 58.3%of the total domestic tourism visits,with total rural tourism revenue reaching 3.2 trillion yuan,making it an important engine for rural economic growth.However,the development of the rural cultural and tourism industry also faces many bottlenecks:on one hand,rural cultural and tourism enterprises generally suffer from shortages of management talents,crude business models,and severe product homogenization[1].According to research data from the China Tourism Association,72%of rural cultural and tourism enterprises consider"insufficient professional management talents"as the primary factor constraining their development.On the other hand,tourism management education is out of sync with the needs of the rural cultural and tourism industry.University tourism management programs tend to focus on general knowledge,with insufficient integration of local rural cultural and tourism resources,making it difficult for graduates to quickly adapt to the actual job requirements of rural cultural and tourism enterprises.
基金financially supported by the National Natural Science Foundation of China(no.21701002,21775138,and 21607135)Jinhua Science and Technology Bureau(no.2018-4-006).
文摘Facile synthesis of single-atom catalytic sites on various supports for the electrochemical carbon dioxide reduction reaction(CO_(2)RR)has attracted increasing attention.Herein,atomically dispersed Ni species supported on nitrogen-doped hollow carbon spheres(SA-Ni/N-CS)were fabricated by using a semisacrificial template strategy.The obtained SA-Ni/N-CS was employed as an electrocatalyst for the CO_(2)RR.We found that the SA-Ni/N-CS displayed ultra-high efficiency and selectivity for CO_(2) conversion into CO with a faradaic efficiency(FE)of 95.1%.Moreover,the SA-Ni/N-CS also exhibited an excellent stability with current density and FE maintained over 99%and 95%,respectively,after 24 h of the CO_(2)RR test.Furthermore,density functional theory(DFT)calculations revealed that the CO_(2) activation process with an activation energy barrier of 2.16 eV is the reaction control step when using SA-Ni/N-CS as a CO_(2)RR catalyst.This work will open up the opportunity for the hard-template synthesis of novel single-atom catalysts for application in electrocatalysis,and suggests that promoting the CO_(2) activation process could be a crucial approach to boosting the CO_(2)RR.
基金supported by the National Natural Science Foundation of China(22302151 and 22301228)Natural Science Foundation of Hubei Province(2024AFB267).
文摘The BiVO_(4)photoanode holds a significant competitive edge for industrialization due to its high theoretical photocurrent density and solar-to-hydrogen conversion efficiency but is challenged by poor reaction kinetics and stability.Here,a conformal and superhydrophilic layer of phytic acid coordinated with nickel and iron(PA-NiFe)was in situ deposited on the surface of the BiVO_(4)photoanode via a facile interfacial coordination assembly strategy.The BiVO_(4)@PA-NiFe photoanode achieved a high photocurrent density of 4.58 mA cm^(−2)and a surface charge separation efficiency of 84.5%,which are 3.23 and 1.91 times higher than those of the pristine BiVO_(4)photoanode,respectively.Moreover,the BiVO_(4)@PA-NiFe photoanode exhibited excellent durability during a 6-hour stability assessment.The enhanced surface charge separation and the improved potential-limiting step during the oxygen evolution reaction contribute to improved photoelectrochemical performances.This work underscores a competitive strategy for developing metal–organic complexes to advance the development of efficient photoanodes.
基金financially supported by the National Natural Science Foundation of China(No.22275205,22205148,and 52403381)the Science and Technology Foundation of Shenzhen(No.JCYJ20220530154404010,JCYJ20230807140900001,and JCYJ20220818100806014)+1 种基金the Guangdong Basic and Applied Basic Research Foundation(No.2023B1515020102 and 2022A1515110408)supported by the public computing service platform provided by SIAT.
文摘Transition metal nitrides are highly valued owing to their unique properties and diverse applications in coatings,lighting applications,and energy storage.However,the development two-dimensional(2D)metal nitrides presents a significant challenge owing to their strong atomic bonds.Herein,we introduce a family of 2D multicomponent metal nitrides,metal tungsten nitride(MWN_(2))nanosheets,via a precursor minimization and nitridation strategy.The composition of M and the stoichiometric ratio can be readily tailored,enabling the successful preparation of high-entropy(FeCoNiMn)WN_(2)nanosheets.Prominently,the high-entropy MWN_(2)nanosheets demonstrate superior oxygen evolution with an overpotential of only 228 mV at 10 mA cm^(−2)and exceptional stability,exhibiting a degradation rate of merely 15μV h^(−1)over 1000 hours.Theoretical insights reveal that antisite defects substantially lower the oxygen adsorption energy.This work sheds light on the highly active and stable catalytic properties of 2D metal nitrides for water oxidation.
