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Selective CO2 electroreduction over an oxidederived gallium catalyst

文献类型：期刊论文

作者Wang, Guoxiong1,2; Yan, Chengcheng1,2,3; Lin, Long1,2,3; Gao, Dunfeng1,2; Bao, Xinhe1,2
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2018-10-28
卷号6期号:40页码:19743-19749
ISSN号2050-7488
DOI10.1039/c8ta08613c
通讯作者Wang, Guoxiong(wanggx@dicp.ac.cn) ; Bao, Xinhe(xhbao@dicp.ac.cn)
英文摘要The electrochemical CO2 reduction reaction (CO2RR) powered by renewable electricity has emerged as a promising approach to alleviate global warming and energy depletion simultaneously. Notably, efficient catalysts containing Earth-abundant elements to achieve high CO2RR performance are in great demand for future applications. Herein, carbon-supported gallia gel nanoparticles were synthesized by precipitating gallium nitrate on carbon black in an ethanolic ammonia solution. Nano-sized gallia nanoparticles uniformly dispersed on the carbon support achieved a maximum CO faradaic efficiency of 77.0% at -0.71 V vs. the reversible hydrogen electrode (RHE) in CO2-saturated 0.1 M KHCO3 solution, showing a dramatic improvement compared to a bulk Ga electrode with only 24.2% CO faradaic efficiency at -0.80 V vs. RHE. X-ray photoelectron spectroscopy measurements revealed that surface Ga3+ species were reduced to metallic Ga when subjected to a negative potential during the CO2RR, indicative of the formation of oxide-derived active gallium sites. Control experiments further highlighted the necessity of close coalescence between the nano-sized gallia particles and the conductive carbon support. The present study underscores the feasibility of improving the CO2RR performance of Ga-related materials through nanostructuring of oxide-derived gallium catalysts.
WOS关键词ELECTROCHEMICAL REDUCTION ; CARBON-DIOXIDE ; ELECTROCATALYTIC REDUCTION ; AU NANOPARTICLES ; METAL-ELECTRODES ; CU ELECTRODES ; SPECTROSCOPY ; CONVERSION
资助项目Ministry of Science and Technology of China[2017YFA0700102] ; National Natural Science Foundation of China[21573222] ; National Natural Science Foundation of China[91545202] ; Outstanding Youth Talent Project of Dalian[2017RJ03] ; Dalian Institute of Chemical Physics[DICP DMTO201702] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17020200] ; CAS Youth Innovation Promotion[2015145]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
出版者ROYAL SOC CHEMISTRY
WOS记录号WOS:000448413100047
资助机构Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outstanding Youth Talent Project of Dalian ; Outstanding Youth Talent Project of Dalian ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Youth Innovation Promotion ; CAS Youth Innovation Promotion ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outstanding Youth Talent Project of Dalian ; Outstanding Youth Talent Project of Dalian ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Youth Innovation Promotion ; CAS Youth Innovation Promotion ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outstanding Youth Talent Project of Dalian ; Outstanding Youth Talent Project of Dalian ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Youth Innovation Promotion ; CAS Youth Innovation Promotion ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outstanding Youth Talent Project of Dalian ; Outstanding Youth Talent Project of Dalian ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Youth Innovation Promotion ; CAS Youth Innovation Promotion
源URL[http://cas-ir.dicp.ac.cn/handle/321008/166748]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Wang, Guoxiong; Bao, Xinhe
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Guoxiong,Yan, Chengcheng,Lin, Long,et al. Selective CO2 electroreduction over an oxidederived gallium catalyst[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(40):19743-19749.
APA Wang, Guoxiong,Yan, Chengcheng,Lin, Long,Gao, Dunfeng,&Bao, Xinhe.(2018).Selective CO2 electroreduction over an oxidederived gallium catalyst.JOURNAL OF MATERIALS CHEMISTRY A,6(40),19743-19749.
MLA Wang, Guoxiong,et al."Selective CO2 electroreduction over an oxidederived gallium catalyst".JOURNAL OF MATERIALS CHEMISTRY A 6.40(2018):19743-19749.

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来源：大连化学物理研究所

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