@article{Xiao2024, 
author = {Chenhao Xiao and Yaxiao Guo and Jiayuan Sun and Tao Guo and Xinyuan Jia and Shinuo Guo and Guancheng Wu and Yue Sun and Zhaoyang Yao and Yi Liu},
title = {Efficient electrocatalytic reduction of nitrate to ammonia at low concentration by copper-cobalt oxide nanowires with shell–core structure},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {6},
pages = {5087-5094},
keywords = {CoCuOx@CuOx/copper foam (CF), shell–core nanowires, heterostructure, low concentration, nitrate electroreduction to ammonia},
url = {https://www.sciopen.com/article/10.1007/s12274-024-6530-8},
doi = {10.1007/s12274-024-6530-8},
abstract = {Electrocatalytic nitrate reduction to ammonia (NO3−RR) for removing nitrate from wastewater is a promising but challengeable technology that is increasingly studied. Herein, we developed an efficient CuOx and CoCuOx composed hybrid catalyst (CoCuOx@CuOx/copper foam (CF)), characteristic of distinctive shell–core nanowires grown on CF substrate with CuOx core and CoCuOx shell. The built-in electric field formed at the interface of the CoO/Cu2O heterostructure promotes NO3− adsorption by modulating the charge distribution at the interface, which greatly improves the ammonia yield rate and Faradaic efficiency. At −0.2 V vs. reversible hydrogen electrode (RHE), CoCuOx@CuOx/CF achieves not only an excellent ammonia yield rate of up to 519.1 μg·h−1·cm−2 and Faradaic efficiency of 99.83% at 1 mM NO3− concentration, but also excellent mechanical stabilities. This study provides a novel pathway to design electrocatalyst for the removal of nitrate from dilute nitric acid solutions (≤ 2 mM).}
}