Boosting C2 products in electrochemical CO2reduction over highly dense copper nanoplates

被引：35

作者：

Ajmal, Saira ^{[1
]}

Yang, Yang ^{[1
]}

Tahir, Muhammad Ali ^{[1
]}

Li, Kejian ^{[1
]}

Bacha, Aziz-Ur-Rahim ^{[1
]}

Nabi, Iqra ^{[1
]}

Liu, Yangyang ^{[1
]}

Wang, Tao ^{[1
]}

Zhang, Liwu ^{[1
,2
]}

机构：

[1] Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200433, Peoples R China

[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 2000, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2020年 / 10卷 / 14期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

CARBON-DIOXIDE; CO2; REDUCTION; CU FOIL; ELECTROREDUCTION; SURFACE; ELECTRODES; MORPHOLOGY; CONVERSION; CATALYSTS; ETHYLENE;

D O I：

10.1039/d0cy00487a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrocatalytic transformation of carbon dioxide to higher value hydrocarbons offers opportunities for large-scale, long-term renewable energy storage and lessens carbon emissions. The fabrication of an efficient electrocatalyst with high selectivity for multicarbon (C2) products remains a topic of continuous interest. Here, we report highly dense copper nanoplate catalysts that are highly selective towards C2 product formation (C(2)H(4)and C2H6) with an average partial current density of -9.6 mA cm(-2), which is nearly 20 times higher than that of Cu-planar catalysts (-0.5 mA cm(-2)). The Cu-nanoplate catalyst exhibits 24 times increase in faradaic efficiency (FEC2) compared with the Cu-planar catalyst. The reaction mechanism is studied byin situRaman and density functional theory (DFT) calculations. The superior selectivity of the Cu-nanoplate catalyst for C2 products originates from the higher surface roughness and abundance of Cu (200) facets. The finding is an important development towards the fabrication of efficient catalysts with exclusively higher selectivity for multicarbon products.

引用

页码：4562 / 4570

页数：9

共 54 条

[1] The "Missing" Bicarbonate in CO2 Chemisorption Reactions on Solid Amine Sorbents [J].