摘要
电催化二氧化碳减排(CO_(2)RR)通过将可再生能源转化为增值燃料和化学品,是实现可持续能源经济和全球气候变化目标最有潜力的途径之一。采用简单易行的水热法合成了不同掺杂比例的In-SnS_(2)催化剂,对催化剂结构进行表征以及测试电催化CO_(2)还原性能,对比了不同掺杂量In-SnS_(2)催化剂对CO_(2)RR的影响。结果表明,元素In的掺杂调节了Sn元素的电子结构,促进CO_(2)活化过程;掺杂量也是影响催化剂电化学活性的重要因素之一,其中原子含量为3%的In-SnS_(2)催化剂表现出最佳的电化学活性,在-1.2 V vs.RHE下该电极电催化CO_(2)为甲酸盐的法拉第效率(FE)为95.48%,且在较宽的电压范围内甲酸盐FE均在80%以上。这项工作为电催化还原CO_(2)领域中硫化物催化剂的开发提供了新思路。
Electrocatalytic CO_(2)reduction(CO_(2)RR)is one of the most promising ways to achieve a sustainable energy economy and global climate change goals by converting renewable energy sources into value-added fuels and chemicals.In-SnS_(2) catalysts with different doping ratios were synthesized by a simple and easy hydrothermal method,and the catalyst structures were characterized as well as tested for electrocatalytic CO_(2)reduction performance to compare the effects of different doping amounts of In-SnS_(2) catalysts on CO_(2)RR.The results show that the doping of elemental In modulates the electronic structure of elemental Sn and promotes the CO_(2)activation process;the doping amount is also one of the important factors affecting the electrochemical activity of the catalysts,where the 3%In-SnS_(2) catalyst exhibits the best electrochemical activity,with a Faraday efficiency(FE)of 95.48%for electrocatalytic CO_(2)to formate at-1.2 V vs.RHE at this electrode,and the formate FE was above 80%for a wide voltage range.This work provides a new idea for the development of sulfide catalysts in the field of electrocatalytic CO_(2)reduction.
作者
闫伦彤
武泽林
李聪明
王俊英
YAN Lun-tong;WU Ze-lin;LI Cong-ming;WANG Jun-ying(College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China;State Key Laboratory of Clean and Efficient Utilization of Coal-Based Energy,Ministry of Provincial Affairs,Taiyuan 030024,China;Shanxi Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China;Taiyuan College of Energy Materials,University of Chinese Academy of Sciences,Taiyuan 030001,China)
出处
《应用化工》
CAS
CSCD
北大核心
2023年第11期3018-3022,3026,共6页
Applied Chemical Industry
基金
国家自然科学基金项目(22179138)
山西省自然科学基金项目(20210302123005)
山西省科技重大专项项目(20181102026)。
关键词
二氧化碳还原
纳米材料
甲酸盐
电化学
carbon dioxide reduction
nanomaterials
formate
electrochemistry
