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Updated: Sep 2, 2026

Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
Valence-engineered CuOxvia anion doping to boost nitrate-to-ammonia conversion
Miaoxi Shuai1, Jixue Lu1, Yapeng Hao1
1Institute of Renewable Energy on Demand, School of Materials Science and Engineering, Suzhou University of Science and Technology, 215009, P.R. China. chwang@usts.edu.cn.
Abstract:
Valence-state engineering of CuOx nanowires (CuOx NWs) is achieved through a novel phosphorus (P) anion doping strategy. P-doping drives surface reconstruction toward a Cu(I)-enriched state, which effectively moderates hydrogen adsorption and suppresses the competing hydrogen evolution reaction. Consequently, it achieves 96.2% NH3 Faradaic efficiency at -0.59 V vs. RHE in a neutral electrolyte, outperforming CuOx NWs and S-doped CuOx NWs. This work highlights the potential of anion-mediated valence engineering for selective electrocatalytic nitrate-to-ammonia conversion.
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