Boosting nitrate electroreduction to ammonia on NbOxvia constructing oxygen vacancies. Issue 3 (19th January 2022)

• Record Type: Journal Article
• Authors: Wan, Xuefei; Guo, Weiwei; Dong, Xue; Wu, Haihong; Sun, Xiaofu; Chu, Mengen; Han, Shitao; Zhai, Jianxin; Xia, Wei; Jia, Shuaiqiang; He, Mingyuan; Han, Buxing
• Is Part Of: Green chemistry. Volume 24:Issue 3(2022)
• Page Start: 1090
• Page End: 1095
• Publication Date: 2022-01-19
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d1gc04483d
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : A NbO x catalyst with oxygen vacancies is synthesized and used for nitrate electroreduction to ammonia. The faradaic efficiency of 94.5% and the NH3 formation rate of 55.0 μg h −1 mgcat −1 can be achieved in a neutral electrolyte. Abstract : We have synthesized NbO x with oxygen vacancies (OVs) and conducted the first work on nitrate electroreduction to NH3 over Nb oxides. It is a robust non-precious metal catalyst for NH3 synthesis by nitrate electroreduction. The faradaic efficiency of 94.5% and the NH3 formation rate of 55.0 μg h −1 mgcat −1 were achieved in a neutral electrolyte. The excellent performance of NbO x originates from the intrinsic properties of Nb oxides and the OVs in the catalyst.