分析化学2024，Vol.52Issue(2)：240-247,中插14-中插15,10.DOI:10.19756/j.issn.0253-3820.231349
Cu0/Cu2+修饰Ti3C2Tx二维材料用于电催化还原二氧化碳
Cu0 Modification and Cu2+ Self-intercalation of Ti3C2Tx Two-dimensional Material for Electrocatalytic Reduction of CO2
摘要
Abstract
The conversion of carbon dioxide into high value-added energy has become a research hotspot.In this study,by using Ti3AlC2 and CuCl2·2H2O as precursors,accordion-like two-dimensional Cu0/Cu2+-Ti3C2Tx catalysts modified with Cu0 nanoparticles and Cu2+ self-intercalation were successfully prepared for electrocatalytic reduction of CO2.The performance of the material was tested,and the results showed that in a CO2-saturated 0.5 mol/L KHCO3 electrolyte solution,compared with the original Ti3AlC2,the initial potential of the electrocatalytic conversion of CO2 to C2H4 over Cu0/Cu2+-Ti3C2Tx catalyst decreased from ‒0.65 V(vs RHE)to‒0.01 V(vs RHE).The maximum current density increased from 0.19 mA/cm2 to 2.5 mA/cm2,the double layer capacitance(Cdl)value increased from 2.61 mF/cm2 to 55.06 mF/cm2.The material showed higher catalytic activity and faster electron transfer rate(Charge transfer resistance(Rct)value was only 16.9 Ω).Moreover,the material showed high electrochemical active area and excellent stability.This research provided a promising method for designing and preparing elcetrocatalytic reduction(ECR)catalysts in the future.关键词
铜/钛碳化铝/插层/电催化/二氧化碳/乙烯Key words
Copper/Aluminum titanium-carbide/Intercalation/Electrocatalysis/Carbon dioxide/Ethene引用本文复制引用
刘楚存,王亚丽,崔慧娜,姚垚..Cu0/Cu2+修饰Ti3C2Tx二维材料用于电催化还原二氧化碳[J].分析化学,2024,52(2):240-247,中插14-中插15,10.基金项目
国家自然科学基金项目(Nos.22265025,12164037)、宁夏自然科学基金项目(No.2021AAC05013)和六盘山资源工程技术研究中心项目(No.HGZD22-14)资助.Supported by the National Natural Science Foundation of China(Nos.22265025,12164037),the Ningxia Natural Science Foundation(No.2021AAC05013)and the Liupanshan Resources Engineering Technology Research Center Project(No.HGZD22-14). （Nos.22265025,12164037）
