Abstract

Pd, Cu, and Zn trimetallic metal-organic framework electrocatalysts (PCZs) based on benzene-1,3,5-tricarboxylic were synthesized using a simple solvothermal synthesis. The as-synthesized PCZ catalysts exhibited as much as 95% faradaic efficiency towards CO, with a high current density, low onset potential, and excellent long-term stability during the electrocatalytic reduction of CO2.

Highlights

  • Noble metals have been widely used as effective electrocatalysts because of their high catalytic activity and excellent stability

  • The findings showed that up to 95% of faradaic CO efficiency can be obtained by using an optimized PCZ as an electrochemical reduction of CO2 (ERC) electrode, which was around two times the bimetallic-BTC value

  • It was reported that different Cu to Pd ratio leads to the different electrocatalytic activity due to the different orientations of the intermediates on the surface and changing the chemisorption energy of reactant molecules on the surface of Pd atoms by the effect of the different surface composition and elemental distribution of Pd and Cu on the surface [43]. We believe that this kind of synergetic effect between Pd and Cu might enhance the ERC activity of as-synthesized PCZ catalysts

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Summary

Introduction

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Noble metals have been widely used as effective electrocatalysts because of their high catalytic activity and excellent stability. Their high cost and non-abundance in the earth are regarded as huge disadvantages in terms of their usage for the economical. Cu and Zn components could be good candidates for the ERC electrode materials because of their high electrocatalytic activity and high abundance in the earth, but it still needs improvement in terms of CO selectivity [29,30,31,32,33,34,35].

Characterization
ERC Properties of PCZs and BM-3 Catalysts
Materials
Characterization Techniques
Synthesis ZIF-8
Synthesis of PCZs
Preparation
Electrochemical
Findings
Conclusions
Full Text
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