燃料化学学报（中英文）2025，Vol.53Issue(4)：452-461,10.DOI:10.1016/S1872-5813(24)60485-8
热处理对ZnOHF电催化还原CO2制CO的性能影响
Effect of heat treatment on the performance of ZnOHF for electrocatalytic reduction of CO2 to CO
常淑玲 1孙婷婷 1贾镕婧 1张立红 1徐彦红2
作者信息
- 1. 天津大学化工学院,天津 300350
- 2. 平顶山学院化学与环境工程学院,河南 平顶山 467000
- 折叠
摘要
Abstract
The selective and efficient conversion of inert CO2 into value-added chemicals by electrochemical methods is one of the important ways to alleviate the environmental and energy crisis.Non-precious metal Zn is often used in the electrocatalytic reduction reaction of CO2(CO2RR)to CO due to its abundant reserves,low price,good stability and non-toxic.However,it is still necessary to improve the catalytic performance of traditional Zn-based catalysts for CO2RR.In order to optimize the performance of Zn-based catalysts,pure ZnOHF sample was synthesized by hydrothermal method.The effect of heat treatment on the structure,texture and electrocatalytic CO2RR performance of the samples was investigated.The electrocatalytic evaluation results revealed that the heat-treated ZnOHF sample showed better activity and CO selectivity compared with untreated sample.The Faraday efficiency of CO(FECO)reached 77.4%at-1.15V vs.RHE.Even at potential of-1.05 V vs.RHE,the current density and FECO could be stabilized at-6.17 mA/cm2 and 72%in 5 h.This was because heat treatment optimized the amount of surface hydroxyl of ZnOHF.The microcrystalline particles became uniform and fine.The roughness and electrochemical surface area(ECSA)also increased,thus exposing more active sites and promoting the adsorption and activation of CO2 as well as the desorption of CO.This study provides experimental basis and theoretical guidance for the design and development of Zn-based catalysts for electrocatalytic CO2RR.关键词
电化学/催化剂/二氧化碳/一氧化碳/ZnOHF/热处理Key words
electrochemistry/catalyst/carbon dioxide/carbon monoxide/ZnOHF/heat treatment分类
化学工程引用本文复制引用
常淑玲,孙婷婷,贾镕婧,张立红,徐彦红..热处理对ZnOHF电催化还原CO2制CO的性能影响[J].燃料化学学报（中英文）,2025,53(4):452-461,10.
