Single-atom Co alloyed Ru for electrocatalytic nitrite reduction to ammonia  

作　　者：Fuzhou Wang Jiaqi Xiang Guike Zhang Kai Chen Ke Chu 

机构地区：[1]School of Materials Science and Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China

出　　处：《Nano Research》2024年第5期3660-3666,共7页纳米研究（英文版）

摘　　要：Electrochemical converting NO_(2)^(-)into NH_(3)(NO_(2)RR)holds an enormous prospect to attain efficient NH_(3) electrosynthesis and polluted NO_(2)^(-)mitigation.Herein,we report single-atom Co alloyed Ru(Co_(1)Ru)as an efficient and durable NO_(2)RR catalyst.Extensive experimental and theoretical investigations reveal that single-atom Co alloying of Ru enables the construction of Co_(1)-Ru heteronuclear active sites to synergistically promote NO_(2)^(-)activation/hydrogenation while suppressing the competitive H_(2) evolution,rendering the greatly enhanced activity and selectivity of Co_(1)Ru towards the NO_(2)RR.Consequently,Co_(1)Ru assembled within a flow cell exhibits an impressive NH_(3) yield rate of 2379.2μmol·h^(-1)·cm^(-2) with an NH_(3)-Faradaic efficiency of 92%at a high current density of 415.9 mA·cm^(-2),which is among the highest NO_(2)RR performances reported to date.

关 键 词：electrochemical converting NO_(2)-into NH3 single-atom alloys theoretical computations industrial-level current density 

分 类 号：O643.3[理学—物理化学]