Cu2S Nanoparticle-Modified Copper Hydroxide Nanowire Arrays for Optimized Electrochemical CO2 Reduction Selectivity

被引：10

作者：

Cui, Enhui ^{[1
]}

Zhang, Wei ^{[1
]}

Zhou, Xuan ^{[1
]}

Lv, Lei ^{[1
]}

Chen, Wei ^{[1
]}

Zhou, Liang ^{[1
,2
,3
]}

Mai, Liqiang ^{[1
,2
,3
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Hubei, Peoples R China

[2] Wuhan Univ Technol, Hubei Longzhong Lab, Xiangyang Demonstrat Zone, Xiangyang 441000, Hubei, Peoples R China

[3] Wuhan Univ Technol, Hainan Inst, Sanya 572000, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2023年 / 6卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

copper-based catalyst; Cu2S nanoparticle; Cu(OH)(2) nanowire; electrochemical CO2 reduction; product selectivity; CARBON-DIOXIDE; CATALYSTS; ELECTROREDUCTION; CONVERSION; ATOMS; STATE;

D O I：

10.1021/acsanm.3c01079

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A copper-based catalyst exhibits a wide distributionof catalyticproducts in electrochemical CO2 reduction. However, itfaces a grand challenge in reaction selectivity. A deeper understandingis needed regarding the mechanism of its diversified product selectivity.Herein, we design a cuprous sulfide nanoparticle-modified copper hydroxidenanowire array precatalyst by a simple solvothermal method for revealingthe catalytic mechanism of copper-based catalysts in electrochemicalCO(2) reduction. The role of cuprous sulfide nanoparticlemodification in copper hydroxide nanowires on formate formation duringCO(2) reduction is investigated. The intermediate duringCO(2) reduction is altered by sulfur modification, resultingin improvement in formate selectivity. Density functional theory isused to investigate the effect of trace sulfur modification in copperon activity and selectivity toward formate formation. Compared witha pure copper surface, sulfur modification in copper can promote theformation of *OCHO, a key intermediate along the formate pathway.

引用

页码：9361 / 9368

页数：8

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