镍纳米颗粒支撑的三维蜂窝状多孔碳框架上亚硝酸盐高效电还原制氨

High-Efficiency Electroreduction of Nitrite to Ammonia on Ni Nanoparticles Strutted 3D Honeycomb-Like Porous Carbon Framework.

作者信息

Li Xiuhong, He Xun, Yao Jie, Dong Kai, Hu Long, Chen Jie, Zhang Longcheng, Fan Xiaoya, Cai Zhengwei, Sun Shengjun, Zheng Dongdong, Hamdy Mohamed S, Liu Qian, Luo Yonglan, Liao Yunwen, Sun Xuping

机构信息

Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, School of Chemistry and Chemical Engineering, China West Normal University, Nanchong, 637002, Sichuan, China.

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

出版信息

ChemSusChem. 2023 Nov 22;16(22):e202300505. doi: 10.1002/cssc.202300505. Epub 2023 Jul 14.

DOI:10.1002/cssc.202300505

PMID:37188641

Abstract

Electroreduction of nitrite (NO ) to ammonia (NH ) provides a sustainable approach to yield NH , whilst eliminating NO contaminants. In this study, Ni nanoparticles strutted 3D honeycomb-like porous carbon framework (Ni@HPCF) is fabricated as a high-efficiency electrocatalyst for selective reduction of NO to NH . In 0.1 M NaOH with NO , such Ni@HPCF electrode obtains a significant NH yield of 12.04 mg h mg and a Faradaic efficiency of 95.1 %. Furthermore, it exhibits good long-term electrolysis stability.

摘要

将亚硝酸盐（NO₂⁻）电还原为氨（NH₃）为生产NH₃提供了一种可持续的方法，同时消除了NO₂⁻污染物。在本研究中，制备了镍纳米颗粒支撑的三维蜂窝状多孔碳框架（Ni@HPCF）作为一种高效电催化剂，用于将NO₂⁻选择性还原为NH₃。在含有NO₂⁻的0.1 M NaOH溶液中，这种Ni@HPCF电极获得了显著的NH₃产率，为12.04 mg h⁻¹ mg⁻¹，法拉第效率为95.1%。此外，它还表现出良好的长期电解稳定性。