Multilayered Zn nanosheets as an electrocatalyst for efficient electrochemical reduction of CO2

被引：102

作者：

Zhang, Taotao ^{[1
,2
]}

Li, Xianfeng ^{[1
,3
]}

Qiu, Yanling ^{[1
]}

Su, Panpan ^{[1
]}

Xu, Wenbin ^{[1
]}

Zhong, Hexiang ^{[1
,3
]}

Zhang, Huamin ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China

来源：

JOURNAL OF CATALYSIS | 2018年 / 357卷

基金：

中国国家自然科学基金;

关键词：

CO2; reduction; Zinc; Electrocatalysis; Nanosheets; Selectivity; CARBON-DIOXIDE; METAL-ELECTRODES; GREENHOUSE-GAS; SELECTIVITY; OXIDE; ZINC; NANOPARTICLES; OPPORTUNITIES; CHALLENGES; CONVERSION;

D O I：

10.1016/j.jcat.2017.11.003

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：

Electrochemical reduction of CO2 into useful fuels, when powered by renewable energy, is an ideal process for replacing fossil feedstocks and simultaneously decreasing CO2 emission. Developing inexpensive electrocatalysts for CO2 reduction to CO with high activity and selectivity is an important part of CO2 conversion. Zn as a low-cost metal is identified to be a promising electrocatalyst for CO2 conversion. Here, we report a Zn electrode composed of multilayered Zn nanosheets (MZnNSs) with high density of edge sites. The MZnNSs catalyst exhibited a maximal CO Faradaic efficiency about 86% at -1.13 V vs RHE, which is almost 9 times higher than that of bulk Zn foil. Density functional theory (DFT) calculations suggest that the improvement of the activity and selectivity of MZnNSs for CO2 reduction is attributed to its high density of edge sites. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：154 / 162

页数：9

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