文献类型：期刊文献

英文题名：Electrochemical behaviors and influence factors of copper and copper alloys cathode for electrocatalytic nitrate removal

作者：Zhang, Lehua[1,2];Yin, Di[1];Zhai, Shengyong[3];Liu, Yiyang[1];Dou, Chen[1];Chen, Peng[1];Huang, Guangtuan[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai, Peoples R China;[3]Changchun Univ Chinese Med, Jilin Ginseng Acad, Jilin, Jilin, Peoples R China

年份：2019

卷号：91

期号：12

起止页码：1589

外文期刊名：WATER ENVIRONMENT RESEARCH

收录：;EI(收录号：20192907181716);WOS:【SCI-EXPANDED(收录号:WOS:000498624200004)】；

语种：英文

外文关键词：Cu; Zn alloy; Cu; Zn; Ni alloy; electrochemical reduction; nitrate

摘要：The electrocatalytic activities of a series of copper alloys, Cu/Ni/Zn (Cu60Ni15Zn25) and Cu/Zn (Cu62Zn38), toward the reduction of nitrate were investigated, in comparison with that of pure copper. Electrochemical analysis showed that the copper alloy electrode exhibited higher electrochemical reduction rate of nitrate. The extreme difference (R) between the orthogonal experiments revealed that the NO3--N concentration was the main determinant of the removal percentage, followed by the current density and electrolyte concentration, while the impact of the initial pH was minimal. The conditions of the electrolysis experiments with Cu/Ni/Zn and Cu/Zn cathodes were optimized as follows: a current density of 8 mA/cm(2), a NaCl concentration of 2.0 g/L, and an initial pH of 3.0. The nitrate reduction reaction process with copper alloy cathodes was confirmed by electrochemical analysis and electrolysis experiments. Therefore, copper alloyed with Zn and Ni is a feasible option for practical application to the electrocatalytic reduction of nitrate. Practitioner points Alloy of Cu, Zn, and Ni improved electrochemical nitrate reduction reaction. Electrochemical reduction of nitrate was confirmed in the presence of NaCl. The optimized current density with copper alloy cathodes was 6 mA/cm(2). A feasible strategy was provided for the improving nitrate removal and minimizing by-products.