Co nanoparticle-decorated radix cynanchi daniculati-derived carbon for efficient electrocatalytic nitrite reduction to ammonia

Chengliang Ma; Li Bao; Xiaoya Fan; Xun He; Xuwei Liu; Wei Chu; Asmaa Farouk; Mohamed S. Hamdy; Shengjun Sun; Quan Li; Min Wu; Xuping Sun

doi:10.1039/D4CY00392F

Co nanoparticle-decorated radix cynanchi daniculati-derived carbon for efficient electrocatalytic nitrite reduction to ammonia†

Chengliang Ma,‡^a Li Bao,‡^b Xiaoya Fan,^c Xun He,

^c Xuwei Liu,^c Wei Chu,

^d Asmaa Farouk,^e Mohamed S. Hamdy,^e Shengjun Sun,^f Quan Li,*^a Min Wu

*^b and Xuping Sun

*^cf

Author affiliations

* Corresponding authors

^a College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, Sichuan, China
E-mail: liquan6688@163.com

^b Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
E-mail: wuminscu@scu.edu.cn

^c Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
E-mail: xpsun@uestc.edu.cn

^d Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China

^e Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, 61413 Abha, Saudi Arabia

^f College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China

Abstract

The electrocatalytic nitrite (NO₂⁻) reduction reaction (NO₂⁻RR) is an eco-friendly and sustainable method to remove NO₂⁻ pollution under ambient conditions while producing high value-added ammonia (NH₃). However, the conversion of NO₂⁻ to NH₃ is governed by a complex six-electron transfer mechanism, necessitating the development of catalysts that exhibit high efficiency and selectivity. Herein, we report Co nanoparticle-decorated radix cynanchi paniculati-derived carbon (Co@RCPC) as a highly active electrocatalyst for NO₂⁻ to NH₃ conversion. Co@RCPC attains an excellent faradaic efficiency of 92.77% and an NH₃ yield of 1235.62 μmol h⁻¹ cm⁻² in alkaline solution. In addition, it also demonstrates superior stability in recycling stability tests and consecutive long-term electrolysis tests.

Catalysis Science & Technology

Co nanoparticle-decorated radix cynanchi daniculati-derived carbon for efficient electrocatalytic nitrite reduction to ammonia†

Abstract

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