Construction of Cobalt Porphyrin-Modified Cu2O Nanowire Array as a Tandem Electrocatalyst for Enhanced CO2 Reduction to C2 Products - Details

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Here,　the　molecule-modified　Cu-based　array　is　first　constructed　as　the　self-supporting　tandem　catalyst　for　electrocatalytic　CO2　reduction　reaction　(CO2RR)　to　C2　products.　The　modification　of　cuprous　oxide　nanowire　array　on　copper　mesh　(Cu2O@CM)　with　cobalt(II)　tetraphenylporphyrin　(CoTPP)　molecules　is　achieved　via　a　simple　liquid　phase　method.　The　systematical　characterizations　confirm　that　the　formation　of　axial　coordinated　Co-O-Cu　bond　between　Cu2O　and　CoTPP　can　significantly　promote　the　dispersion　of　CoTPP　molecules　on　Cu2O　and　the　electrical　properties　of　CoTPP-Cu2O@CM　heterojunction　array.　Consequently,　as　compared　to　Cu2O@CM　array,　the　optimized　CoTPP-Cu2O@CM　sample　as　electrocatalyst　can　realize　the　2.08-fold　C2　Faraday　efficiency　(73.2% vs　35.2%)　and　the　2.54-fold　current　density　(‒52.9 vs　‒20.8 mA cm–2)　at　‒1.1 V　versus　RHE　in　an　H-cell.　The　comprehensive　performance　is　superior　to　most　of　the　reported　Cu-based　materials　in　the　H-cell.　Further　study　reveals　that　the　CoTPP　adsorption　on　Cu2O　can　restrain　the　hydrogen　evolution　reaction,　improve　the　coverage　of　*CO　intermediate,　and　maintain　the　existence　of　Cu(I)　at　low　potential.　©　2024　Wiley-VCH　GmbH.

Keyword：

Binary alloys Carbon dioxide Cobalt compounds Copper oxides Electrocatalysts Heterojunctions Molecules Nanowires Porphyrins

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[ 1 ] [Min, Shihao]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Beijing; 100045, China
[ 2 ] [Min, Shihao]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350108, China
[ 3 ] [Min, Shihao]University Chinese Academy of Science, Fujian College, Fuzhou; 350002, China
[ 4 ] [Min, Shihao]College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 5 ] [Xu, Xiao]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Beijing; 100045, China
[ 6 ] [Xu, Xiao]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350108, China
[ 7 ] [Xu, Xiao]University Chinese Academy of Science, Fujian College, Fuzhou; 350002, China
[ 8 ] [He, Jiaxin]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Beijing; 100045, China
[ 9 ] [He, Jiaxin]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350108, China
[ 10 ] [He, Jiaxin]University Chinese Academy of Science, Fujian College, Fuzhou; 350002, China
[ 11 ] [He, Jiaxin]College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 12 ] [Sun, Miao]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Beijing; 100045, China
[ 13 ] [Sun, Miao]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350108, China
[ 14 ] [Sun, Miao]University Chinese Academy of Science, Fujian College, Fuzhou; 350002, China
[ 15 ] [Lin, Wenlie]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Beijing; 100045, China
[ 16 ] [Kang, Longtian]Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Beijing; 100045, China
[ 17 ] [Kang, Longtian]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350108, China
[ 18 ] [Kang, Longtian]University Chinese Academy of Science, Fujian College, Fuzhou; 350002, China

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Small

ISSN： 1613-6810

Year： 2024

Issue： 32

Volume： 20

1 3 . 0 0 0

JCR@2023

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