化工环保2024，Vol.44Issue(3)：441-448,8.DOI:10.3969/j.issn.1006-1878.2024.03.019
硫掺杂强化铜基氮化碳材料电催化还原CO2
Enhancement of electrocatalytic reduction of carbon dioxide by sulfur doping in to a copper-based carbon nitride material
摘要
Abstract
In this study,the CuSx-C3N4 catalyst was prepared and characterized by SEM,EDS,TEM,XRD,and XPS.Then,the catalyst was used for the electrocatalytic reduction reaction of CO2(CO2RR)with CO as the target product.Faraday efficiency and partial current density were used to characterize the CO selectivity and catalytic activity of the CuSx-C3N4catalyst,respectively.The results show that sulfur doping improves the CO selectivity and catalytic activity of the Cu-C3N4 catalyst.When the sulfur content is 1.5%,and the potential is-0.65 V(relative to the reversible hydrogen electrode),the CO selectivity of the CuSx-C3N4 catalyst achieves the highest,and the Faraday efficiency of CO is as high as 90%.Pyridine N is easier to catalyze CO2RR to produce CO than graphite N,and sulfur doping increases the proportion of pyridine N in the catalyst.Compared with the Cu-C3N4 catalyst,the proportion of pyridine N in the CuSx-C3N4 catalyst with a sulfur content of 1.5%increases from 22%to 35%,and the proportion of graphite N decreases from 15%to 12%.关键词
硫掺杂/铜基氮化碳/电催化/CO2还原/CO选择性/催化活性Key words
sulfur doping/copper-based carbon nitride/electrocatalysis/CO2 reduction/CO selectivity/catalytic activity分类
资源环境引用本文复制引用
高凤如,刘志超,肖发沂,石颖颖,俞伟婷,胡俊..硫掺杂强化铜基氮化碳材料电催化还原CO2[J].化工环保,2024,44(3):441-448,8.基金项目
山东省高等学校低碳绿色养殖新技术研发中心项目 （）
潍坊市生态循环农业工程实验室项目 （）
潍坊高新区2021年科技惠民计划项目(2021KJHM19). （2021KJHM19）
