Construction of W_(1)-Zn dinuclear sites to boost nitrite electroreduction to ammonia  

作　　者：Zhuohang Li Ying Zhang Xiang Li Ruizhi Liang Ye Tian Ke Chu 

机构地区：[1]School of Materials Science and Engineering,Lanzhou Jjiaotong University,Lanzhou 730070,Gansu,China [2]Department of Physics,College of Science,Hebei North University,Zhangjiakou 075000,Hebei,China

出　　处：《Journal of Energy Chemistry》2025年第3期302-308,共7页能源化学(英文版)

基　　金：supported by the Industrial Support Plan Project of Gansu Provincial Education Department(2024CYZC-22)。

摘　　要：Electroreduction of nitrite to ammonia(NO_(2)RR)is recognized as an appealing method for achieving renewable NH_(3)production and waste NO_(2)^(-)removal.Herein,monodispersed W-doped ZnO(W_(1-)ZnO)is develo ped as an efficient NO_(2)RR catalyst.Theoretical simulations and in situ spectroscopic measurements unravel that the enhanced NO_(2)RR property of W_(1)-ZnO originates from the creation of active W_(1)-Zn dinuclear sites to selectively activate NO_(2)^(-)and enhance the protonation energetics of NO_(2)^(-)to-NH_(3)pathway,whilst repelling the competing H_(2)evolution.Strikingly,W_(1)-ZnO equipped in flow cell shows an impressive NO_(2)RR performa nce with NH_(3)yield rate of 970μmol h^(-1)cm^(-2)and NH_(3)-Faradaic efficiency of 94.5%.

关 键 词：Electrocatalytic NO_(2)-reduction to NH3 Theoretical computations Single-atom catalysts In situ spectroscopy 

分 类 号：O643.36[理学—物理化学] O643.3[理学—化学]