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Layered bismuth oxide/bismuth sulfide supported on carrageenan derived carbon for efficient carbon dioxide electroreduction to formate

Layered bismuth oxide/bismuth sulfide supported on carrageenan derived carbon for efficient carbon dioxide electroreduction to formate

作     者:Xiangzhao Hu Junjie Sun Wanzhen Zheng Sixing Zheng Yu Xie Xiang Gao Bin Yang Zhongjian Li Lecheng Lei Yang Hou Xiangzhao Hu;Junjie Sun;Wanzhen Zheng;Sixing Zheng;Yu Xie;Xiang Gao;Bin Yang;Zhongjian Li;Lecheng Lei;Yang Hou

作者机构:Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-QuzhouQuzhou 324000China Department of Material ChemistryNanchang Hangkong UniversityNanchang 330063China School of Biological and Chemical EngineeringNingbo Technology UniversityNingbo 315100China 

出 版 物:《Chinese Journal of Chemical Engineering》 (中国化学工程学报(英文版))

年 卷 期:2022年第35卷第3期

页      面:116-123页

核心收录:

学科分类:081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基  金:supported by the National Natural Science Foundation of China(21922811,21878270,22178308,and 21961160742) Jiangxi Province“double thousand plan”project(205201000020) the Zhejiang Provincial Natural Science Foundation of China(LR19B060002) the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(2019R01006) Zhejiang Key Laboratory of Marine Materials and Protective Technologies(2020K10) Key Laboratory of Marine Materials and Related Technologies,CAS the Startup Foundation for Hundred-Talent Program of Zhejiang University 

主  题:Nanomaterials Catalyst Selectivity Bi_(2)S_(3)/Bi_(2)O_(3) CO_(2)electroreduction Formate 

摘      要:Electrochemical reduction of carbon dioxide(CO_(2)ER)into formate plays a crucial role in CO_(2)conversion and ***,it still faces the problems of high overpotential and poor catalytic ***,we report a hybrid CO_(2)ER electrocatalyst composed of layered bismuth sulfide(Bi_(2)S_(3))and bismuth oxide(Bi_(2)O_(3))supported on carrageenan derived carbon(Bi-CDC)prepared by a combined pyrolysis with hydrothermal *** such 3 D hybrid,layered Bi_(2)O_(3)and Bi_(2)S_(3)are uniformly grown on nanocarbon *** from strong synergistic effect between Bi_(2)O_(3)/Bi_(2)S_(3)and nanocarbon,Bi-CDC-1:2 displays a high Faradic efficiency(FE)of80%for formate production in the range of-0.9 V to-1.1 V with the maximum formate FE of 85.6%and current density of 14.1 mA·cm^(-2) at-1.0 ***,a positive onset potential of-0.5 V,a low Tafel slope of 112.38 mV·dec^(-1),and a slight performance loss during long-term CO_(2)ER tests are observed on Bi-CDC-1:*** results shows that the better CO_(2)ER performance of Bi-CDC-1:2 than that of Bi_(2)O_(3)can be attributed to the strong interfacial interactions between nanocarbons and Bi_(2)O_(3)/Bi_(2)S_(3).In situ ATR-FTIR measurements reveal that the rate-determining step in the CO_(2)ER is the formation of HCOO^(*) *** with carbon support,Bi-CDC-1:2 can promote the production of HCOO^(*) intermediate and thus promoting CO_(2)ER kinetic.

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