Cu0 Modification and Cu2+ Self-intercalation of Ti3C2Tx Two-dimensional Material for Electrocatalytic Reduction of CO2
10.19756/j.issn.0253-3820.231349
- VernacularTitle:Cu0/Cu2+修饰Ti3C2Tx二维材料用于电催化还原二氧化碳
- Author:
Chu-Cun LIU
1
;
Ya-Li WANG
;
Hui-Na CUI
;
Yao YAO
Author Information
1. 宁夏师范学院化学化工学院,宁夏回族自治区绿色催化材料与技术重点实验室,固原 756000
- Keywords:
Copper;
Aluminum titanium-carbide;
Intercalation;
Electrocatalysis;
Carbon dioxide;
Ethene
- From:
Chinese Journal of Analytical Chemistry
2024;52(2):240-247,中插14-中插15
- CountryChina
- Language:Chinese
-
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.
