CoSe2 nanowire array enabled highly efficient electrocatalytic reduction of nitrate for ammonia synthesis

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外文摘要：The electrocatalytic reduction of nitrate(NO3-)not only facilitates the environmentally sustainable pro-duction of ammonia(NH3)but also purifies water by removing NO3-,thereby transforming waste into valuable resources.The process of converting NO3-to NH3 is complex,involving eight electron transfers and multiple intermediates,making the choice of electrocatalyst critical.In this study,we report a cobalt selenide(CoSe2)nanowire array on carbon cloth(CoSe2/CC)as an effective electrocatalyst for the NO3-to NH3 conversion.In an alkaline medium with 0.1 mol/L NO3-,CoSe2/CC demonstrates exceptional NH3 Faradaic efficiency of 97.6％and a high NH3 yield of 517.7 μmol h-1 cm-2 at-0.6 V versus the reversible hydrogen electrode.Furthermore,insights into the reaction mechanism of CoSe2 in the electrocatalytic NO3-reduction are elucidated through density functional theory calculations.

外文关键词：

CoSe2Electrocatalytic nitrate reductionNH3 synthesisElectrocatalysisDensity functional theory calculation

作者：

Ting Xie、Xun He、Lang He、Kai Dong、Yongchao Yao、Zhengwei Cai、Xuwei Liu、Xiaoya Fan、Tengyue Li、Dongdong Zheng、Shengjun Sun、Luming Li、Wei Chu、Asmaa Farouk、Mohamed S.Hamdy、Chenggang Xu、Qingquan Kong、Xuping Sun

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作者单位：

College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610068,China

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

College of Chemistry,Chemical Engineering and Materials Science,Shandong Normal University,Ji'nan 250014,China

Institute for Advanced Study,Chengdu University,Chengdu 610106,China

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

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出版年：

2024

DOI：

10.1016/j.cclet.2024.110005

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(11)