Nanoporous tin oxides for efficient electrochemical CO2 reduction to formate

被引：0

作者：

Hai Liu ^{[1
]}

Baiyu Miao ^{[1
]}

Hongyuan Chuai ^{[1
]}

Xiaoyi Chen ^{[1
]}

Sheng Zhang ^{[1
,2
]}

Xinbin Ma ^{[1
,2
,3
]}

机构：

[1] Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University

[2] Zhejiang Institute of Tianjin University

[3] Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University

来源：

Green Chemical Engineering | 2022年 / 3卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

暂无

中图分类号：

TQ426 [催化剂（触媒）]; X701 [废气的处理与利用];

学科分类号：

080502 ; 081705 ; 083002 ;

摘要：

CO2electroreduction reaction(CO2RR) has been considered as an effective technology to close the anthropogenic carbon cycle. Formate, a product of two-electron transfer in CO2RR, is an economically valuable feedstock. In this work, nanoporous tin oxides were controllable synthesized by a facile and scalable electrochemical anodic oxidation method. XPS result indicated that the increased Sn4+species after anodic oxidation were beneficial to reduce the overpotential of formate formation. Operando Raman spectra revealed that the enhanced formate selectivity could be attributed to the high local p H within the porous structure, which suppresses hydrogen evolution reaction(competing reaction against CO2RR). Further flow cell test showed a formate partial current density of 285 mA cm-2with the selectivity of 96.4%, indicating a promising industrial application prospect.

引用

页码：138 / 145

页数：8

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