Polymer nanocomposite coatings(PNCCs)are unprecedented generation of coatings engineered for displaying inexpensive and brilliant functional surface coatings with eminent corrosion guard,mechanical resistance,antimicr...Polymer nanocomposite coatings(PNCCs)are unprecedented generation of coatings engineered for displaying inexpensive and brilliant functional surface coatings with eminent corrosion guard,mechanical resistance,antimicrobial,chemical durability,electrical insulation,and UV aging features.Due to their widely anticipation in petroleum,applications in building,conveyance,aerospace,electronics,automobiles and energy,these multi-functional coatings have a tremendous leverage in human life,all technological and scientific subjects.Numerous applications have been made for multilateral polymers like polyurethane(PU),epoxy(EP),polyaniline(PANI)conductive polymer,polypyrrole(PPy),and etc,on various metallic surfaces especially,carbon steel substrate owing to their excellent resistance properties.Practically,nanomaterials can possess potential in the all-interdisciplinary domains of materials science and engineering,chemical and physical sciences,biological and health sciences.As known,the designed polymer nanocomposite coating paradigm is fundamentally constituted from polymer or resin as a vehicle and inorganic nanofillers(nanoparticles and nanocomposites).Some commercialized and excessively employed nanocontainers in polymer nanocomposite coating formulations,like ZnO,TiO_(2),carbon nanotubes(CNTs),clay,SiO_(2),Al_(2)O_(3),graphene,GO,CeO_(2),ZrO_(2),FeTiO_(3),etc were discussed.The current review covered the chemistry and potential applications of the largest utilized multifunctional polymer nanocomposite coatings such as EP,PU and other considerable PNCCs.Lately,a titanic attention was made for epoxy nanocomposites because of their distinct physicochemical characteristics,which result from the combined qualities of the nanoparticles and polymer material unity.In addition,the author incorporated some of his scientific contributions in this area represented in construction of innovative functional polymer nanocomposites for a variety of uses with high economic,industrial impacts and future orientation.Furthermore,some newly published applications of polymer nanocomposite coatings were incorporated and discussed.展开更多
Functional materials with multiple properties are urgent to be explored to reach high requirements for applications nowadays.In this work,a new multifunctional one-dimensional(1D)chain compound[N(C_(3)H_(7))_(4)][Cu(o...Functional materials with multiple properties are urgent to be explored to reach high requirements for applications nowadays.In this work,a new multifunctional one-dimensional(1D)chain compound[N(C_(3)H_(7))_(4)][Cu(ohpma)]·H_(2)O 1(ohpma=deprotonated N-(2-hydoxyphenyl)oxamic acid)exhibiting both 1D antiferromagnetic and nonlinear optical properties,which are both originated from the same polar[Cu(C_(8)H_(4)NO_(4))]magnetic units,has been successfully synthesized by evaporation at room temperature.Bis-polydentate nature of the(ohpma)3−ligand with constrained tridentate and bidentate coordination sites conducts Cu^(2+)ions coordinating in different geometries and forms 1D chains along the c axis,which are further separated by the[N(C_(3)H_(7))_(4)]+cations.And the 1D magnetic chains further exhibit noncentrosymmetric polar arrangement.Nonlinear optical study shows polar compound 1 exhibits a discernible second-harmonic generation(SHG)efficiency and the calculation of the partial density of states indicates that the SHG efficiency of 1 is mainly originated from the polar[Cu(C_(8)H_(4)NO_(4))]magnetic units.Moreover,magnetic susceptibility shows a broad maximum around 70 K with strong intrachain interaction of J/k B=−113.0 K but no long-range order is observed down to 2 K,suggesting that 1 shows a good 1D magnetism.Both good 1D magnetism and SHG activity suggest that 1 could be as a potential multifunctional material,particularly.展开更多
In recent years,transition metal borides(TMBs)have attracted much attention because they are considered as potential superhard materials and have more abundant crystal structures compared with traditional superhard ma...In recent years,transition metal borides(TMBs)have attracted much attention because they are considered as potential superhard materials and have more abundant crystal structures compared with traditional superhard materials.So far,however,no superhard materials have been found in TMBs.A large number of structures and potential new properties in TMBs are induced by the various hybridization ways of boron atoms and the high valence electrons of transition metals,which provide many possibilities for its application.And most TMBs have layered structures,which make TMBs have the potential to be a two-dimensional(2D)material.The 2D materials have novel properties,but the research on 2D TMBs is still nearly blank.In this paper,the research progress of TMBs is summarized involving structure,mechanical properties,and multifunctional properties.The strong covalent bonds of boron atoms in TMBs can form one-dimensional,twodimensional,and three-dimensional substructures,and the multiple electron transfer between transition metal and boron leads to a variety of chemical bonds in TMBs,which are the keys to obtain high hardness and multifunctional properties of TMBs.Further research on the multifunctional properties of TMBs,such as superconductors,catalysts,and high hardness ferromagnetic materials,is of great significance to the discovery of new multifunctional hard materials.展开更多
To address the growing demand for radar and infrared stealth materials in complex application scenarios,this study develops an integrated multifunctional composite through a vacuum impregnation process that combines S...To address the growing demand for radar and infrared stealth materials in complex application scenarios,this study develops an integrated multifunctional composite through a vacuum impregnation process that combines SiCN ceramics,porous ceramics,and phase change materials(PCMs).The unmodified SiCN ceramic,as a standalone component,exhibits a minimum reflection loss(RL_(min))of-14.91 dB,demonstrating its intrinsic electromagnetic absorption capability.When integrated into the composite,the porous ceramic matrix optimizes impedance matching,synergistically enhancing the overall microwave absorption performance.The resulting composite achieves RL_(min) of-31.29 dB with an effective absorption bandwidth(EAB)covering 96%of the X-band(8.2-12.4 GHz).Furthermore,the PCM embedded within the pores utilizes its latent heat during phase transition to regulate temperature fluctuations.When subjected to heating at 90℃(exceeding the PCM solid-liquid transition temperature)for 42 min,the composite exhibits a temperature rise of only 16.5℃,maintaining a 36.6℃difference from the external thermal load.This special thermal buffering capability ensures stable thermal insulation and infrared stealth functions while improving the electromagnetic response stability of the material under dynamic thermal conditions.The proposed design strategy offers new insights for advancing multifunctional electromagnetic wave(EMW)absorbing materials with enhanced performance adaptability.展开更多
Semiconductor photocatalysis is proven to be one of the potential approaches to solve energy crisis and environmental problems.Efficient solar energy utilization and superior charge carrier separation capacity are two...Semiconductor photocatalysis is proven to be one of the potential approaches to solve energy crisis and environmental problems.Efficient solar energy utilization and superior charge carrier separation capacity are two crucial aspects in photocatalysis.Herein,the photocatalytic performances of the pristine and modified tungsten-based materials with mixed valence state are summarized concisely.The narrow band gap energy,coexistence of W^(5+)/W^(6+)and the oxygen vacancies all contribute to the pristine tungsten-based photocatalysts with unique ultraviolet(UV),visible(Vis),and near-infrared(NIR)light-induced photocatalytic activities.Furthermore,the enhanced localized surface plasmonic resonance(LSPR)effect,improved charge carrier separation efficiency and prolonged charge carrier lifetime all boost the performances of modified tungsten-based heterojunction photocatalysts.Moreover,multifunctional tungsten-based photocatalysts with mixed valence state are established to realize the full utilization of solar energy authentically.Concluding perspectives on the challenges and opportunities for the further exploration of tungsten-based photocatalysts are also presented.展开更多
Metal-organic frameworks(MOFs)are nanomaterials with engineered chemical structures,offering remarkable properties.However,their limited film-formation capability hinders their integration into triboelectric nanogen-e...Metal-organic frameworks(MOFs)are nanomaterials with engineered chemical structures,offering remarkable properties.However,their limited film-formation capability hinders their integration into triboelectric nanogen-erators(TENGs).This study proposes a simple yet effective solution to overcome this challenge by employing electrospinning techniques to integrate the zeolitic imidazolate framework(ZIF-8)into an easy-to-use nanofibrous mat.ZIF-8 has high surface potential,a unique cubical structure,and an easy fabrication process that makes it an ideal material for TENGs.By incorporating ZIF-8 into the electrospinning solution,significant improve-ments are achieved in the electropositivity of the resulting nanofibers.It leads to notable changes in the shape,morphology,and roughness of electrospun fibers,consequently enhancing the overall performance of the TENG.The results indicate that utilizing the ZIF-based electrospun mat as a tribo-positive material can increase transferred charges between electrodes by more than 100%.Utilizing the MOF-based nanofibrous mat,this study also introduces a novel rotary TENG that works based on a mode of TENG operation called rolling mode.The reliable charge generation by the proposed rolling system reveals that this mode of TENG operation could be a superb alternative for traditional TENG modes,like contact/separation or sliding,which cause high levels of mechanical stress due to harsh physical impact or friction.展开更多
The completed skeletal muscle regeneration resulted from severe injury and muscle-related disease is still a challenge.Here,we developed an injectable muscle-adhesive antioxidant conductive bioactive photothermo-respo...The completed skeletal muscle regeneration resulted from severe injury and muscle-related disease is still a challenge.Here,we developed an injectable muscle-adhesive antioxidant conductive bioactive photothermo-responsive nanomatrix for regulating the myogenic differentiation and promoting the skeletal muscle regeneration in vivo.The multifunctional nanomatrix was composed of polypyrrole@polydopamine(PPy@PDA,342±5.6 nm)nanoparticles-crosslinked Pluronic F-127(F127)-polycitrate matrix(FPCP).The FPCP nanomatrix demonstrated inherent multifunctional properties including excellent photothermo-responsive and shear-thinning behavior,muscle-adhesive feature,injectable ability,electronic conductivity(0.48±0.03 S/m)and antioxidant activity and photothermal function.The FPCP nanomatrix displayed better photothermal performance with near-infrared irradiation,which could provide the photo-controlled release of protein(91%±2.6%of BSA was released after irradiated 3 times).Additionally,FPCP nanomatrix could significantly enhance the cell proliferation and myogenic differentiation of mouse myoblast cells(C2C12)by promoting the expressions of myogenic genes(MyoD and MyoG)and myosin heavy chain(MHC)protein with negligible cytotoxicity.Based on the multifunctional properties,FPCP nanomatrix efficiently promoted the full-thickness skeletal muscle repair and regeneration in vivo,through stimulating the angiogenesis and myotube formation.This study firstly indicated the vital role of multifunctional PPy@PDA nanoparticles in regulating myogenic differentiation and skeletal muscle regeneration.This work also suggests that rational design of bioactive matrix with multifunctional feature would greatly enhance the development of regenerative medicine.展开更多
文摘Polymer nanocomposite coatings(PNCCs)are unprecedented generation of coatings engineered for displaying inexpensive and brilliant functional surface coatings with eminent corrosion guard,mechanical resistance,antimicrobial,chemical durability,electrical insulation,and UV aging features.Due to their widely anticipation in petroleum,applications in building,conveyance,aerospace,electronics,automobiles and energy,these multi-functional coatings have a tremendous leverage in human life,all technological and scientific subjects.Numerous applications have been made for multilateral polymers like polyurethane(PU),epoxy(EP),polyaniline(PANI)conductive polymer,polypyrrole(PPy),and etc,on various metallic surfaces especially,carbon steel substrate owing to their excellent resistance properties.Practically,nanomaterials can possess potential in the all-interdisciplinary domains of materials science and engineering,chemical and physical sciences,biological and health sciences.As known,the designed polymer nanocomposite coating paradigm is fundamentally constituted from polymer or resin as a vehicle and inorganic nanofillers(nanoparticles and nanocomposites).Some commercialized and excessively employed nanocontainers in polymer nanocomposite coating formulations,like ZnO,TiO_(2),carbon nanotubes(CNTs),clay,SiO_(2),Al_(2)O_(3),graphene,GO,CeO_(2),ZrO_(2),FeTiO_(3),etc were discussed.The current review covered the chemistry and potential applications of the largest utilized multifunctional polymer nanocomposite coatings such as EP,PU and other considerable PNCCs.Lately,a titanic attention was made for epoxy nanocomposites because of their distinct physicochemical characteristics,which result from the combined qualities of the nanoparticles and polymer material unity.In addition,the author incorporated some of his scientific contributions in this area represented in construction of innovative functional polymer nanocomposites for a variety of uses with high economic,industrial impacts and future orientation.Furthermore,some newly published applications of polymer nanocomposite coatings were incorporated and discussed.
基金supported by the National Natural Science Foundation of China(NSFC,No.22101091)the Fundamental Research Funds for the Central Universities(No.2019kfyXKJC016)the Innovation and Talent Recruitment Base of New Energy Chemistry and Device(No.B210003),Knowledge Innovation Program of Wuhan-Basic Research.
文摘Functional materials with multiple properties are urgent to be explored to reach high requirements for applications nowadays.In this work,a new multifunctional one-dimensional(1D)chain compound[N(C_(3)H_(7))_(4)][Cu(ohpma)]·H_(2)O 1(ohpma=deprotonated N-(2-hydoxyphenyl)oxamic acid)exhibiting both 1D antiferromagnetic and nonlinear optical properties,which are both originated from the same polar[Cu(C_(8)H_(4)NO_(4))]magnetic units,has been successfully synthesized by evaporation at room temperature.Bis-polydentate nature of the(ohpma)3−ligand with constrained tridentate and bidentate coordination sites conducts Cu^(2+)ions coordinating in different geometries and forms 1D chains along the c axis,which are further separated by the[N(C_(3)H_(7))_(4)]+cations.And the 1D magnetic chains further exhibit noncentrosymmetric polar arrangement.Nonlinear optical study shows polar compound 1 exhibits a discernible second-harmonic generation(SHG)efficiency and the calculation of the partial density of states indicates that the SHG efficiency of 1 is mainly originated from the polar[Cu(C_(8)H_(4)NO_(4))]magnetic units.Moreover,magnetic susceptibility shows a broad maximum around 70 K with strong intrachain interaction of J/k B=−113.0 K but no long-range order is observed down to 2 K,suggesting that 1 shows a good 1D magnetism.Both good 1D magnetism and SHG activity suggest that 1 could be as a potential multifunctional material,particularly.
基金supported by the National Key Research and Development Program of China(Grant Nos.2016YFA0401503 and 2018YFA0305700)the National Natural Science Foundation of China(Grant No.11575288)+1 种基金the Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences(Grant Nos.XDB33000000,XDB25000000,and QYZDBSSW-SLH013)the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant No.Y202003)。
文摘In recent years,transition metal borides(TMBs)have attracted much attention because they are considered as potential superhard materials and have more abundant crystal structures compared with traditional superhard materials.So far,however,no superhard materials have been found in TMBs.A large number of structures and potential new properties in TMBs are induced by the various hybridization ways of boron atoms and the high valence electrons of transition metals,which provide many possibilities for its application.And most TMBs have layered structures,which make TMBs have the potential to be a two-dimensional(2D)material.The 2D materials have novel properties,but the research on 2D TMBs is still nearly blank.In this paper,the research progress of TMBs is summarized involving structure,mechanical properties,and multifunctional properties.The strong covalent bonds of boron atoms in TMBs can form one-dimensional,twodimensional,and three-dimensional substructures,and the multiple electron transfer between transition metal and boron leads to a variety of chemical bonds in TMBs,which are the keys to obtain high hardness and multifunctional properties of TMBs.Further research on the multifunctional properties of TMBs,such as superconductors,catalysts,and high hardness ferromagnetic materials,is of great significance to the discovery of new multifunctional hard materials.
基金supported by the National Natural Science Foundation of China(Nos.52302100 and 52402125)the Natural Science Foundation of Shandong Province(Nos.ZR2023ME140 and ZR2022QE024)+2 种基金the Youth Innovation Team Program in Colleges of Shandong Province(No.2023KJ144)the Innovation Capacity Improvement Project of Small and Medium-Sized Technology-Based Enterprise of Shandong Province(No.2024TSGC0540)the Key Laboratory of High-Temperature Electromagnetic Materials and the Structure of MOE,Wuhan University of Science and Technology(No.KB202405).
文摘To address the growing demand for radar and infrared stealth materials in complex application scenarios,this study develops an integrated multifunctional composite through a vacuum impregnation process that combines SiCN ceramics,porous ceramics,and phase change materials(PCMs).The unmodified SiCN ceramic,as a standalone component,exhibits a minimum reflection loss(RL_(min))of-14.91 dB,demonstrating its intrinsic electromagnetic absorption capability.When integrated into the composite,the porous ceramic matrix optimizes impedance matching,synergistically enhancing the overall microwave absorption performance.The resulting composite achieves RL_(min) of-31.29 dB with an effective absorption bandwidth(EAB)covering 96%of the X-band(8.2-12.4 GHz).Furthermore,the PCM embedded within the pores utilizes its latent heat during phase transition to regulate temperature fluctuations.When subjected to heating at 90℃(exceeding the PCM solid-liquid transition temperature)for 42 min,the composite exhibits a temperature rise of only 16.5℃,maintaining a 36.6℃difference from the external thermal load.This special thermal buffering capability ensures stable thermal insulation and infrared stealth functions while improving the electromagnetic response stability of the material under dynamic thermal conditions.The proposed design strategy offers new insights for advancing multifunctional electromagnetic wave(EMW)absorbing materials with enhanced performance adaptability.
基金This work was financially supported by the Gansu Province Development and Reform Commission(NDRC,Grant No.2013-1336)the Light Function and Fight Conversion Material Discipline Innovation Base Cultivation Project(Grant No.G20190028011).
文摘Semiconductor photocatalysis is proven to be one of the potential approaches to solve energy crisis and environmental problems.Efficient solar energy utilization and superior charge carrier separation capacity are two crucial aspects in photocatalysis.Herein,the photocatalytic performances of the pristine and modified tungsten-based materials with mixed valence state are summarized concisely.The narrow band gap energy,coexistence of W^(5+)/W^(6+)and the oxygen vacancies all contribute to the pristine tungsten-based photocatalysts with unique ultraviolet(UV),visible(Vis),and near-infrared(NIR)light-induced photocatalytic activities.Furthermore,the enhanced localized surface plasmonic resonance(LSPR)effect,improved charge carrier separation efficiency and prolonged charge carrier lifetime all boost the performances of modified tungsten-based heterojunction photocatalysts.Moreover,multifunctional tungsten-based photocatalysts with mixed valence state are established to realize the full utilization of solar energy authentically.Concluding perspectives on the challenges and opportunities for the further exploration of tungsten-based photocatalysts are also presented.
基金National Research Foundation of Korea,Grant/Award Number:Creative Research Initiative/2015R1A3A2028975。
文摘Metal-organic frameworks(MOFs)are nanomaterials with engineered chemical structures,offering remarkable properties.However,their limited film-formation capability hinders their integration into triboelectric nanogen-erators(TENGs).This study proposes a simple yet effective solution to overcome this challenge by employing electrospinning techniques to integrate the zeolitic imidazolate framework(ZIF-8)into an easy-to-use nanofibrous mat.ZIF-8 has high surface potential,a unique cubical structure,and an easy fabrication process that makes it an ideal material for TENGs.By incorporating ZIF-8 into the electrospinning solution,significant improve-ments are achieved in the electropositivity of the resulting nanofibers.It leads to notable changes in the shape,morphology,and roughness of electrospun fibers,consequently enhancing the overall performance of the TENG.The results indicate that utilizing the ZIF-based electrospun mat as a tribo-positive material can increase transferred charges between electrodes by more than 100%.Utilizing the MOF-based nanofibrous mat,this study also introduces a novel rotary TENG that works based on a mode of TENG operation called rolling mode.The reliable charge generation by the proposed rolling system reveals that this mode of TENG operation could be a superb alternative for traditional TENG modes,like contact/separation or sliding,which cause high levels of mechanical stress due to harsh physical impact or friction.
基金This work was supported by National Natural Science Foundation of China(Grant No.51872224,51802227)Special Support Program for High Level Talents of Shaanxi Province(Grant No.7122200063)+4 种基金Special Guidance Funds for the Construction of World-class Universities(disciplines)Characteristic Development in Central Universities(grant No.PY3A078)China Postdoctoral Science Foundation(Grant No.2019M653754)Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research,College of Stomatology,Xi’an Jiaotong University(Grant No.2018LHM-KFKT004)Wenzhou Science and Technology Bureau Project(Grant No.ZY2019003,Y20190123,Y2020236).
文摘The completed skeletal muscle regeneration resulted from severe injury and muscle-related disease is still a challenge.Here,we developed an injectable muscle-adhesive antioxidant conductive bioactive photothermo-responsive nanomatrix for regulating the myogenic differentiation and promoting the skeletal muscle regeneration in vivo.The multifunctional nanomatrix was composed of polypyrrole@polydopamine(PPy@PDA,342±5.6 nm)nanoparticles-crosslinked Pluronic F-127(F127)-polycitrate matrix(FPCP).The FPCP nanomatrix demonstrated inherent multifunctional properties including excellent photothermo-responsive and shear-thinning behavior,muscle-adhesive feature,injectable ability,electronic conductivity(0.48±0.03 S/m)and antioxidant activity and photothermal function.The FPCP nanomatrix displayed better photothermal performance with near-infrared irradiation,which could provide the photo-controlled release of protein(91%±2.6%of BSA was released after irradiated 3 times).Additionally,FPCP nanomatrix could significantly enhance the cell proliferation and myogenic differentiation of mouse myoblast cells(C2C12)by promoting the expressions of myogenic genes(MyoD and MyoG)and myosin heavy chain(MHC)protein with negligible cytotoxicity.Based on the multifunctional properties,FPCP nanomatrix efficiently promoted the full-thickness skeletal muscle repair and regeneration in vivo,through stimulating the angiogenesis and myotube formation.This study firstly indicated the vital role of multifunctional PPy@PDA nanoparticles in regulating myogenic differentiation and skeletal muscle regeneration.This work also suggests that rational design of bioactive matrix with multifunctional feature would greatly enhance the development of regenerative medicine.
