Efficient Electroreduction of CO2 to CH4 on Ultrasmall Copper Nanoparticles

被引：1

作者：

Zhang, Yichi ^{[1
,2
,3
,4
]}

Zhou, Dawei ^{[1
,2
,3
,4
]}

Wang, Min ^{[1
,2
,3
,4
]}

Zhang, Zijun ^{[1
,2
,3
,4
]}

Jia, Shuaiqiang ^{[1
,2
,3
,4
]}

He, Mingyuan ^{[1
,2
,3
,4
]}

Chen, Chunjun ^{[1
,2
,3
,4
]}

Wu, Haihong ^{[1
,2
,3
,4
]}

Han, Buxing ^{[1
,2
,3
,4
,5
]}

机构：

[1] East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, State Key Lab Petr Mol & Proc Engn, Shanghai 200062, Peoples R China

[2] Sinopec Res Inst Petr Proc Co LTD, State Key Lab Petr Mol & Proc Engn, SKLPMPE, Beijing 100083, Peoples R China

[3] East China Normal Univ, Shanghai 200062, Peoples R China

[4] Inst Ecochongming, Shanghai 202162, Peoples R China

[5] Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, Ctr Carbon Neutral Chem,Beijing Natl Lab Mol Sci,C, Beijing 100190, Peoples R China

来源：

CCS CHEMISTRY | 2024年 / 6卷 / 12期

基金：

中国国家自然科学基金;

关键词：

CO2; methane; electrochemical; ultra- small nanoparticle; green chemistry;

D O I：

10.31635/ccschem.024.202404854

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electroreduction of carbon dioxide (CO2) into valuable chemicals and fuels is a promising strategy to mitigate energy and environmental problems. However, the poor selectivity and inadequate electrochemical stability prevent practical applications. In this work, we prepared ultrasmall copper (Cu) nanoparticles by using tannic acid as a complexing agent and stablizer. The ultrasmall Cu nanoparticles (3.4 nm) exhibited outstanding performance for CO2 electroreduction to CH4. The Faradaic efficiency of CH4 could reach up to 68% at - 1.2 V versus reversible hydrogen electrode (RHE), with high current density of 475 mA <middle dot> cm-2. The ultrasmall Cu nanoparticles could enhance the CO adsorption and H2O activation, resulting in the high selectivity of CH4.

引用

页码：2876 / 2881

页数：6

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