Portable electrochemical synthesis of H_(2)O_(2),which is widely used for disinfection,sterilization,and waste treatment,has attracted increasing attention.However,low atomic utilization efficiency and by-product disp...Portable electrochemical synthesis of H_(2)O_(2),which is widely used for disinfection,sterilization,and waste treatment,has attracted increasing attention.However,low atomic utilization efficiency and by-product disposal during the synthesis of electrocatalysts are inevitable.Based on the advantages of single-atom catalysts(SACs)towards H_(2)O_(2)synthesis via a 2e−transfer oxygen reduction reaction,this work presents the synthesis of ZnNC SACs as excellent oxygen reduction catalysts with high atomic use efficiency and almost no generated waste by using formamide and metal powder as precursors.The ZnNC SACs exhibit H_(2)O_(2)selectivity exceeding 80%when working continuously for 10,000 s.The synthetic strategy described in this paper is intended to be used as a supplement to the synthesis of metal-nitrogen-carbon SACs with high atomic utilization efficiency and low waste generation for environmental and chemical applications.展开更多
基金financially supported by the National Key Research and Development Program of China (2018YFA0702002)the National Natural Science Foundation of China (21935001, 22101015, 22175012 and 22005022)+3 种基金the Royal Society and Newton Fund through Newton Advanced Fellowship award (NAFR1191294)the Program for Changjiang Scholars and Innovation Research Team in the University (IRT1205)the Fundamental Research Funds for the Central Universities, Beijing Natural Science Foundation (2214062)the S&T Program of Hebei (21344601D)
文摘Portable electrochemical synthesis of H_(2)O_(2),which is widely used for disinfection,sterilization,and waste treatment,has attracted increasing attention.However,low atomic utilization efficiency and by-product disposal during the synthesis of electrocatalysts are inevitable.Based on the advantages of single-atom catalysts(SACs)towards H_(2)O_(2)synthesis via a 2e−transfer oxygen reduction reaction,this work presents the synthesis of ZnNC SACs as excellent oxygen reduction catalysts with high atomic use efficiency and almost no generated waste by using formamide and metal powder as precursors.The ZnNC SACs exhibit H_(2)O_(2)selectivity exceeding 80%when working continuously for 10,000 s.The synthetic strategy described in this paper is intended to be used as a supplement to the synthesis of metal-nitrogen-carbon SACs with high atomic utilization efficiency and low waste generation for environmental and chemical applications.
