电催化剂
法拉第效率
催化作用
可逆氢电极
电化学
无机化学
氨
硝酸盐
贵金属
产量(工程)
钴
制氢
兴奋剂
吸附
氧化物
材料科学
氧化钴
氨生产
电极
化学
化学工程
工作电极
物理化学
冶金
有机化学
光电子学
工程类
作者
Peipei Wei,Jie Liang,Qian Liu,Lisi Xie,Xin Tong,Yuchun Ren,Tingshuai Li,Yongsong Luo,Na Li,Bo Tang,Abdullah M. Asiri,Mohamed S. Hamdy,Qingquan Kong,Zhiming Wang,Xuping Sun
标识
DOI:10.1016/j.jcis.2022.01.186
摘要
Electrochemical nitrate reduction reaction (NO3RR) is an attractive alternative to NH3 production under ambient conditions. Although noble metal-based catalysts exhibit decent NO3RR performance to NH3, the high cost and insufficient supply obstruct its large-scale application. In this work, we report that Fe-doped Co3O4 nanoarray efficiently catalyzes NO3RR for NH3 production in neutral conditions. It achieves a large NH3 yield of 0.624 mg mgcat.-1h-1 and high Faradaic efficiency of 95.5% at -0.7 V versus reversible hydrogen electrode. Besides, this catalyst exhibits good NO3RR stability. Density functional theory calculations reveal favorable adsorption of NO3- on Fe-doped Co3O4, which is conducive to NH3 production in the NO3RR process.
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