Issue 8, 2024

Highly selective hydrogen peroxide electrosynthesis on copper phthalocyanine: interface engineering with an azo-polymer

Abstract

The two-electron oxygen reduction reaction provides a new green route for the sustainable production of H2O2, which is cost-effective, less energy-intensive and environmentally friendly compared to the industrial anthraquinone method. However, the activity and stability of the catalyst is still in urgent need of improvement. Herein, the electrode–electrolyte (solid–liquid) interface was adjusted by surface modification of a catalyst, and the modified CuPc-NO2 catalyst with azo molecules exhibited an improved selectivity of H2O2 by 30–50%. Furthermore, the electrode surface was further modified by doping F into the azo molecule to enhance the HO2desorption property of the catalyst. The proposed CuPc-TAP-F catalyst showed a 98% selectivity of H2O2 with a stability of 40 h and a wide potential window of 0.8 VRHE (≥90% selectivity), reaching a relatively high level in the field of H2O2 electrosynthesis from the point of view of both efficiency and stability.

Graphical abstract: Highly selective hydrogen peroxide electrosynthesis on copper phthalocyanine: interface engineering with an azo-polymer

Supplementary files

Article information

Article type
Paper
Submitted
03 Nov 2023
Accepted
16 Jan 2024
First published
29 Jan 2024

J. Mater. Chem. A, 2024,12, 4788-4795

Highly selective hydrogen peroxide electrosynthesis on copper phthalocyanine: interface engineering with an azo-polymer

Z. Sun, X. Lu, X. Wang, D. Wang, J. Luan, Y. Liu and W. Qi, J. Mater. Chem. A, 2024, 12, 4788 DOI: 10.1039/D3TA06728A

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