钴-氮掺杂碳纳米管纳米杂化物作为一种用于将硝酸盐电还原为氨的高活性催化剂。

Co-NCNT nanohybrid as a highly active catalyst for the electroreduction of nitrate to ammonia.

作者信息

Chen Jie, Zhou Qiang, Yue Luchao, Zhao Donglin, Zhang Longcheng, Luo Yongsong, Liu Qian, Li Na, Alshehri Abdulmohsen Ali, Hamdy Mohamed S, Gong Feng, Sun Xuping

机构信息

Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 211189, Jiangsu, China.

出版信息

Chem Commun (Camb). 2022 Mar 18;58(23):3787-3790. doi: 10.1039/d2cc00245k.

DOI:10.1039/d2cc00245k

PMID:35229095

Abstract

Electrocatalytic nitrate (NO) reduction has emerged as an attractive dual-function strategy to produce ammonia (NH) and simultaneously mitigate environmental issues. However, efficient electrocatalysts with high selectivity for NH synthesis are highly desired. In this work, we report the Co-NCNT nanohybrid as a highly active electrocatalyst towards NO-to-NH conversion. In 0.1 M NaOH solution containing 0.1 M NO, the Co-NCNT catalyst is capable of attaining a large NH yield of 5996 μg h cm and a high faradaic efficiency of 92% at -0.6 V reversible hydrogen electrode. Moreover, it displays excellent electrochemical stability.

摘要

电催化硝酸盐（NO）还原已成为一种有吸引力的双功能策略，可用于生产氨（NH₃）并同时缓解环境问题。然而，非常需要对NH₃合成具有高选择性的高效电催化剂。在这项工作中，我们报道了Co-NCNT纳米杂化物作为一种对NO转化为NH₃具有高活性的电催化剂。在含有0.1 M NO的0.1 M NaOH溶液中，Co-NCNT催化剂在相对于可逆氢电极-0.6 V时能够实现5996 μg h cm⁻²的高NH₃产率和92%的高法拉第效率。此外，它还表现出优异的电化学稳定性。