南京理工大学张树鹏研究组分享 http://blog.sciencenet.cn/u/shupeng2009

博文

张树鹏老师合作文章在Journal of Materials Science发表

已有 828 次阅读 2021-1-1 11:38 |个人分类:点滴成果|系统分类:论文交流

Cu, Ni and multi-walled carbon-nanotube-modified graphite felt electrode for nitrate electroreduction in water

Chang Lu a, Xiaoyun Lu b, Kun Yang a, Haiou Song a, b, c, Shupeng Zhang a, c, d, Aimin Li a, c, *


Abstract

 

A three-dimensional bimetal carbon-based electrode, CuNi/multi-walled carbon nanotube/graphite felt (CuNi/M/GF), was designed for the electrochemical reduction of nitrate. Multi-walled carbon nanotubes (MWCNTs) served as the interlayer and skeleton, which increased the electrochemical reduction activity of GF to nitrate. CuNi/M/GF with different atomic ratios of copper and nickel were prepared by adjusting the electrodeposition potential. The performance of the CuNi/M/GF, Cu foam, Ni foam, M/GF and GF in a dual-chamber cell and single-chamber cell were evaluated for different concentrations of chlorine, current density, energy consumption and degradation. In a solution of 100 mg/L NO3-N, the removal of NO3-N and total nitrogenTNby the optimal electrode in single-chamber cell (SCC) can reach 99%. Aeration in the dual-chamber cell cathode can blow out more than 99% of the ammonia–nitrogen that is converted from NO3-N. More than 95% of the TN in a 100 ml, 700 mg/L NO3--N solution was removed within 6 h. CuNi/M/GF showed excellent corrosion resistance and stability in the cyclic tests. CuNi–1.3/M/GF is more resistant to corrosion in the DCC than in the SCC which may be attributed to contact of the cathode with the oxidizing substance in the SCC. The application of CuNi/M/GF in practical wastewater that contained a high concentration of NaCl and nitrate-N shows that the electrode has considerable application prospects in TN removal.

 

Keywords: Nitrate electroreduction; Electrocatalytic reduction; Carbon-based electrode; Bimetallic electrode

Abstract.png




https://wap.sciencenet.cn/blog-311896-1265231.html

上一篇:祝贺张树鹏老师的微课作品获得江苏省微课教学比赛一等奖
下一篇:祝贺谢康俊、喻舰等同学合作文章在Chemical Engineering Journal期刊发表

1 郑永军

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2021-5-13 17:55

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部