Issue 42, 2023

In situ formed copper nanoparticles via strong electronic interaction with organic skeleton for pH-universal electrocatalytic CO2 reduction

Abstract

Electrochemical CO2 reduction reaction (CO2RR) has mainly been implemented in alkaline and neutral electrolytes. However, part of the input CO2 is consumed by the formation of carbonate, which leads to lower carbon utilization efficiency and significant energy losses. Acidic media can overcome these shortcomings but is less investigated since hydrogen evolution reaction (HER) is hitherto dominant and only few catalysts show excellent performance. Herein, we report an in situ formed novel organic/inorganic copper hybrid catalyst that originates from histidine-functionalized perylene diimide (HPH) coordinating with copper ions for CO2RR in acidic media. HPH contains two symmetrical imidazole, which has the ability to supply electrons to copper ions, creating electron-rich Cu at applied voltages. The spilled Cu0 forms a hybrid structure with the HPH ligand that exhibits pH-universal electrochemical CO2RR activity and FECO could reach approximately 70% in acidic, alkaline, and neutral electrolytes. In situ ATR-SEIRAS and XPS spectra indicate that the organic/inorganic copper hybrid catalyst formed by in situ reduction can be conducive to promote the activation of CO2 molecules and enhance the adsorption strength of the *COOH and *CO intermediates, especially in acidic media.

Graphical abstract: In situ formed copper nanoparticles via strong electronic interaction with organic skeleton for pH-universal electrocatalytic CO2 reduction

Supplementary files

Article information

Article type
Paper
Submitted
21 May 2023
Accepted
24 Sep 2023
First published
25 Sep 2023

J. Mater. Chem. A, 2023,11, 22992-23000

In situ formed copper nanoparticles via strong electronic interaction with organic skeleton for pH-universal electrocatalytic CO2 reduction

Y. Zhang, C. Zhang, D. Wang, J. Gui, J. Mao, Y. Lou, C. Pan and Y. Zhu, J. Mater. Chem. A, 2023, 11, 22992 DOI: 10.1039/D3TA03009A

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