Photosynthesis of organic compounds in coupling with promoted hydrogen evolution under mild conditions of light irradiation is considered as one of the most efficient and promising approach to obtain high purity hydro...Photosynthesis of organic compounds in coupling with promoted hydrogen evolution under mild conditions of light irradiation is considered as one of the most efficient and promising approach to obtain high purity hydrogen and value-added chemicals concurrently by utilizing green solar energy.Here,we report the synthesis of Ni S nanoparticle-modified Cd S nanorod composites(Ni S/Cd S)as an efficient bifunctional catalyst for the highly selective photocatalytic synthesis of high-value-added product benzaldehyde(BAD)from aqueous solution of benzyl alcohol(BA)under oxygen-free conditions,in accompanying with the efficient hydrogen evolution.The synergetic catalytic effect between Ni S and Cd S is proposed to play an important role in elevating the photo-redox performance.The composition-optimized 30%Ni S/Cd S catalyst affords an extraordinarily high H;generation rate of 207.8μmol h^(-1)and a simultaneous BAD generation rate of 163.8μmol h^(-1)under visible light irradiation,which are respectively 139 and 950 times higher than those of Cd S without Ni S modification.To our knowledge,these are the highest photocatalytic production rates of both H_(2)and aldehyde ever reported on the concurrent photocatalytic of aldehyde synthesis and hydrogen evolution in green aqueous solution.This work provides a highly efficient photosynthesis strategy for the concurrent productions of high-value-added fine chemicals and hydrogen.展开更多
Bijie Experimental Region takes the ecological construction as the guarantee and takes population control as the key,to promote development-oriented poverty reduction and explore benign interaction between development...Bijie Experimental Region takes the ecological construction as the guarantee and takes population control as the key,to promote development-oriented poverty reduction and explore benign interaction between development-oriented poverty reduction and ecological construction and population control.Development-oriented poverty reduction model includes combination of raising crops and livestock,coordinated development of multiple wealth sources,transferring labor,and partner assistance;ecological construction model includes"Five sons passed imperial examinations",desertification control,agricultural circular economy,and project promotion;population control models includes human-land linkage,combination of favorable policies and propaganda and education,and combination of ambition arousing and education promotion.展开更多
Electrocatalytic 2e−oxygen reduction reaction(2e−ORR)is a promising approach to producing H_(2)O_(2) at ambient temperature and pressure especially in acidic media,which,however,is hindered by the high cost of preciou...Electrocatalytic 2e−oxygen reduction reaction(2e−ORR)is a promising approach to producing H_(2)O_(2) at ambient temperature and pressure especially in acidic media,which,however,is hindered by the high cost of precious metal-based electrocatalysts.Hence,the development of efficient earth-abundant electrocatalysts and reaction mechanism exploration for H_(2)O_(2) production by 2e−ORR in acidic solution are critically important but remain challenging at present.In this work,NiSe_(2)has been developed as a novel and high-performance 2e−ORR electrocatalyst in acidic media,moreover,using nickel chalcogenides as the models,the influence of different anion species(Se_(2)^(2−),S22−,and O^(2−))on 2e−ORR electrocatalytic performance of the catalysts has been investigated.The synthesized NiSe_(2)exhibits outstanding 2e−ORR performance of high selectivity(90%)and long-term durability(12 h).The maximum H_(2)O_(2) concentration of NiSe_(2)reaches 988 ppm,which is the highest among all the reported transition metal chalcogenides.This work demonstrates a novel point of view in anion tuning for designing high-efficiency transition-metal-based electrocatalysts for 2e−ORR.展开更多
基金supported by the National Natural Science Foundation of China (52172110)the “Scientific and Technical Innovation Action Plan” China Science&Technology Cooperation Project of Shanghai Science and Technology Committee (21520760500)+1 种基金the “Super Postdoctoral Incentive Program” of Shanghai Municipal Human Resources and Social Security Bureau (2021411)Special Research Assistant Grant Project from Chinese Academy of Sciences
基金This work was supported by the Natural Science Foundation of Shanghai(21ZR1418700)the China Postdoctoral Science Foundation funded project(2020T130193)the Fundamental Research Funds for the Central Universities。
文摘Photosynthesis of organic compounds in coupling with promoted hydrogen evolution under mild conditions of light irradiation is considered as one of the most efficient and promising approach to obtain high purity hydrogen and value-added chemicals concurrently by utilizing green solar energy.Here,we report the synthesis of Ni S nanoparticle-modified Cd S nanorod composites(Ni S/Cd S)as an efficient bifunctional catalyst for the highly selective photocatalytic synthesis of high-value-added product benzaldehyde(BAD)from aqueous solution of benzyl alcohol(BA)under oxygen-free conditions,in accompanying with the efficient hydrogen evolution.The synergetic catalytic effect between Ni S and Cd S is proposed to play an important role in elevating the photo-redox performance.The composition-optimized 30%Ni S/Cd S catalyst affords an extraordinarily high H;generation rate of 207.8μmol h^(-1)and a simultaneous BAD generation rate of 163.8μmol h^(-1)under visible light irradiation,which are respectively 139 and 950 times higher than those of Cd S without Ni S modification.To our knowledge,these are the highest photocatalytic production rates of both H_(2)and aldehyde ever reported on the concurrent photocatalytic of aldehyde synthesis and hydrogen evolution in green aqueous solution.This work provides a highly efficient photosynthesis strategy for the concurrent productions of high-value-added fine chemicals and hydrogen.
文摘Bijie Experimental Region takes the ecological construction as the guarantee and takes population control as the key,to promote development-oriented poverty reduction and explore benign interaction between development-oriented poverty reduction and ecological construction and population control.Development-oriented poverty reduction model includes combination of raising crops and livestock,coordinated development of multiple wealth sources,transferring labor,and partner assistance;ecological construction model includes"Five sons passed imperial examinations",desertification control,agricultural circular economy,and project promotion;population control models includes human-land linkage,combination of favorable policies and propaganda and education,and combination of ambition arousing and education promotion.
基金supported by Shanghai Science and Technology Committee Rising-Star Program(No.22QA1403400)the Natural Science Foundation of Shanghai(No.21ZR1418700)the National Natural Science Foundation of China(No.52201271).
文摘Electrocatalytic 2e−oxygen reduction reaction(2e−ORR)is a promising approach to producing H_(2)O_(2) at ambient temperature and pressure especially in acidic media,which,however,is hindered by the high cost of precious metal-based electrocatalysts.Hence,the development of efficient earth-abundant electrocatalysts and reaction mechanism exploration for H_(2)O_(2) production by 2e−ORR in acidic solution are critically important but remain challenging at present.In this work,NiSe_(2)has been developed as a novel and high-performance 2e−ORR electrocatalyst in acidic media,moreover,using nickel chalcogenides as the models,the influence of different anion species(Se_(2)^(2−),S22−,and O^(2−))on 2e−ORR electrocatalytic performance of the catalysts has been investigated.The synthesized NiSe_(2)exhibits outstanding 2e−ORR performance of high selectivity(90%)and long-term durability(12 h).The maximum H_(2)O_(2) concentration of NiSe_(2)reaches 988 ppm,which is the highest among all the reported transition metal chalcogenides.This work demonstrates a novel point of view in anion tuning for designing high-efficiency transition-metal-based electrocatalysts for 2e−ORR.
基金financially supported by the National Key R&D Program of China (2016YFA0203700)the National Natural Science Foundation of China (51702099, 51672303 and 51722211)+5 种基金the Program of Shanghai Academic Research Leader (18XD1404300)Young Elite Scientist Sponsorship Program by CAST (2015QNRC001)Youth Innovation Promotion Association of the Chinese Academy of Sciences (2013169)Shanghai Sailing Program (17YF1403800)China Postdoctoral Science Foundation funded project (2017M611500)the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (SKL201702SIC)
基金supported by the Natural Science Foundation of Shanghai(21ZR1418700)China Postdoctoral Science Foundation funded project(2020T130193)the Fundamental Research Funds for the Central Universities.
