Effect of halides on nanoporous Zn-based catalysts for highly efficient electroreduction of CO2 to CO

被引：53

作者：

Dang Le Tri Nguyen ^{[1
,2
]}

Jee, Michael Shincheon ^{[1
,3
]}

Won, Da Hye ^{[1
]}

Oh, Hyung-Suk ^{[1
]}

Min, Byoung Koun ^{[1
,4
]}

Hwang, Yun Jeong ^{[1
,2
]}

机构：

[1] KIST, Clean Energy Res Ctr, 5 Hwarang Ro 14 Gil, Seoul 02792, South Korea

[2] Korea Univ Sci & Technol UST, KIST Sch, Div Energy & Environm Technol, 5 Hwarang Ro 14 Gil, Seoul 02792, South Korea

[3] Korea Univ, Dept Chem & Biol Engn, 145 Anam Ro, Seoul 136713, South Korea

[4] Korea Univ, Green Sch, 145 Anam Ro, Seoul 136713, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2018年 / 114卷

基金：

新加坡国家研究基金会;

关键词：

Halide ion; Zn-based catalyst; CO2 reduction reaction; CO production; Electrochemical surface area; CARBON-DIOXIDE; ELECTROCHEMICAL REDUCTION; OXIDE; SELECTIVITY; OXYGEN; ELECTROCATALYST; ENVIRONMENT; TRANSPORT; FILMS; CU;

D O I：

10.1016/j.catcom.2018.06.020

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 effects of halide ions (F-, Br-, or I-) on nanoporous Zn-based electrocatalysts were assessed. All catalysts in the presence of halides exhibited high electrocatalytic performances of CO2 reduction reaction (CO2RR) and efficient suppression of hydrogen evolution reaction (HER) with a maximum Faradaic efficiency of up to 97%. The increasing adsorption strength from F- to I- is proposed to form more porous structures and higher oxidized Zn species, thus facilitating the protonation of CO2 and stabilizing the adsorbed intermediates induced by charge donation from the adsorbed halides on Zn surface to CO2, enhance CO2RR and simultaneously suppress HER.

引用

页码：109 / 113

页数：5

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