Jungsu Eo. (2025). Effect of Aqueous Electrolyte on the Reconstruction of Metal-organic Frameworks during CO2 Electroreduction. doi: 10.22677/THESIS.200000845182
Type
Thesis
Description
Carbon dioxide electroreduction, Metal-organic frameworks, Reconstruction, Catalytic active site
Table Of Contents
List of Contents Abstract i List of Contents ii List of Tables ⅳ List of Figures v
Ⅰ. Introduction 1.1 Electrochemical CO2 Reduction Reaction 1 1.2 Cu-based Electrocatalyst for CO2RR 6 1.3 Metal-organic Frameworks 8 1.3.1 Utility of Metal-organic Frameworks as Electrochemical Catalysts 8 1.3.2 Water Stability of Metal-organic Frameworks 10 1.4 Reconstruction of Catalyst in CO2RR 14 1.4.1 Reconstruction of Metal-based Catalyst 14 1.4.2 Reconstruction of MOFs in CO2RR 15 1.5 Research Motivation and Strategy 17
Ⅱ. Theoretical Background 2.1 Electrochemical Reaction 19 2.2 Mechanisms of CO2 Reduction 20 2.3 Performance Evaluation Indicators of CO2 Reduction Catalyst 22 2.4 CO2RR Electrolyzer and Electrode 23 2.5 Electrolytes in CO2RR 26 2.6 Chemical State Transformation of Cu in Aqueous Electrolyte 27
Ⅲ. Experimental 3.1 Synthesis of Cu-BDC and Cu-MOF-74 32 3.2 Material Characterization 33 3.3 Electrode Preparation 34 3.4 Evaluation of CO2 Reduction Performance 35
Ⅳ. Results and Discussion 4.1 Mechanisms of Structural Change Depending on the Degree of Hydrophobicity of the MOF and the Electrolyte Environment 37 4.1.1 Cu-based MOFs Characterization 41 4.1.2 Analysis of the MOFs Structural Change as the pH of the Electrolytes 44 4.2 Variation of CO2RR Selectivity with the Degradation Behavior of MOFs 52 4.3 Identify the Cause of Variation in CO2RR Selectivity due to Different Reconstructions in MOFs 60
