SnO2-Modified Two-Dimensional CuO for Enhanced Electrochemical Reduction of CO2 to C2H4

Lan，Yangchun1; Niu，Gaoqiang1; Wang，Fei1; Cui，Dehu1; Hu，Zhuofeng2

2020-08-12

10.1021/acsami.0c09240

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Electrochemical reduction of CO2 was a widespread method for CO2 conversion into valuable chemical fuel. C2H4 is an important product from CO2 reduction. However, conversion of CO2 into the hydrocarbon C2H4 faced large energy barriers. Herein, we, for the first time, achieve a high efficiency for electrochemical conversion of CO2 to C2H4 on a tin-modified CuO. By modifying with Sn, we obtained a related low onset potential of C2H4 as positive as -0.8 V versus RHE and a high Faradaic efficiency of C2H4 as high as 22% at -1.0 V (vs RHE). According to density functional calculation, the Sn dopant mainly enriched the electron density of CuO, while it was electron-poor in the Sn dopants. The rate of CO2 reduction can be enhanced on Cu nanosheets with higher electron density. We believed that this work would promote the development of two-dimensional catalysts for CO2 conversion and deepen the understanding of doping on CO2 reduction.

CO2 CuO electrocatalyst nanosheet tin

SCI ; EI

英语

第一

National Natural Science Foundation of China[51902357] ; Natural Science Foundation of Guangdong Province, China[2019A1515012143] ; Shenzhen fundamental research funding[JCYJ20160530185817133][JCYJ20160331115312355][JCYJ20160331115147389] ; NSQKJJ[K20799112] ; Start-up Funds for High-Level Talents of Sun Yat-sen University[38000-18841209] ; Fundamental Research Funds for the Central Universities[19lgpy153]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000562182900035

AMER CHEMICAL SOC

20203809209544

Electron density measurement ; Carrier concentration ; Carbon dioxide ; Nanosheets ; Electrocatalysts ; Tin ; Electrolytic reduction

Ore Treatment:533.1 ; Tin and Alloys:546.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Solid State Physics:933

2-s2.0-85089711907

Scopus

1.School of Microelectronics,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Environmental Science and Engineering,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology,Sun Yat-sen University,Guangzhou,510275,China

Lan，Yangchun,Niu，Gaoqiang,Wang，Fei,et al. SnO2-Modified Two-Dimensional CuO for Enhanced Electrochemical Reduction of CO2 to C2H4[J]. ACS Applied Materials & Interfaces,2020,12(32):36128-36136.

Lan，Yangchun,Niu，Gaoqiang,Wang，Fei,Cui，Dehu,&Hu，Zhuofeng.(2020).SnO2-Modified Two-Dimensional CuO for Enhanced Electrochemical Reduction of CO2 to C2H4.ACS Applied Materials & Interfaces,12(32),36128-36136.

Lan，Yangchun,et al."SnO2-Modified Two-Dimensional CuO for Enhanced Electrochemical Reduction of CO2 to C2H4".ACS Applied Materials & Interfaces 12.32(2020):36128-36136.