Understanding the Role of Functional Groups in Polymeric Binder for Electrochemical Carbon Dioxide Reduction on Gold Nanoparticles

被引：109

作者：

Lee, Ji Hoon ^{[1
]}

Kattel, Shyam ^{[2
]}

Xie, Zhenhua ^{[1
]}

Tackett, Brian M. ^{[1
]}

Wang, Jiajun ^{[3
]}

Liu, Chang-Jun ^{[3
]}

Chen, Jingguang G. ^{[1
,2
]}

机构：

[1] Columbia Univ, Dept Chem Engn, New York, NY 10027 USA

[2] Brookhaven Natl Lab, Div Chem, Upton, NY 11973 USA

[3] Tianjin Univ, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2018年 / 28卷 / 45期

关键词：

binders; density functional theories; electrochemical carbon dioxide reduction; functional groups; gold; CO2; REDUCTION; CATALYTIC-ACTIVITY; AU; ELECTROREDUCTION; SILVER; SELECTIVITY; GAS;

D O I：

10.1002/adfm.201804762

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemical CO2 reduction reaction (CO2RR) is one of the promising strategies for converting CO2 to value-added chemicals. Gold (Au) catalysts are considered to be the best benchmarking materials for CO2RR to produce CO. In this work, the role of different functional groups of polymeric binders on CO2RR over Au catalysts is systematically investigated by combined experimental measurements and density functional theory (DFT) calculations. Especially, it is revealed that the functional groups can play a role in suppressing the undesired hydrogen evolution reaction, the main competing reaction against CO2RR, thus enabling more catalytic active sites to be available for CO2RR and enhancing the CO2RR activity. Consistent with the DFT prediction, fluorine (F)-containing functional groups in the F-rich polytetrafluoroethylene binder lead to a high Faradaic efficiency (approximate to 94.7%) of CO production. This study suggests a new strategy by optimizing polymeric binders for the selective CO2RR.

引用

页数：6

共 37 条

[11] Effect of Chloride Anions on the Synthesis and Enhanced Catalytic Activity of Silver Nanocoral Electrodes for CO2 Electroreduction [J].