Issue 18, 2023

Tunable functional groups on MXene regulating the catalytic property of anchored cobalt phthalocyanine for electrochemical CO2 reduction

Abstract

The regulation of the intermediate adsorption strength is the key for boosting the catalytic performance, while it is still a challenge to achieve this in a facile manner. Herein, CoPc complex was anchored on an MXene support bearing different terminal groups (–F or –OH) to systematically investigate the effect of the terminal groups of the MXene support on the performance of the electrochemical CO2 reduction reaction (ECRR). By forming Co–O axial coordination, the anchoring of CoPc was facilitated and the electronic states of Co were tuned. As a result, CoPc/MXene–OH shows an impressive faradaic efficiency for CO formation (FECO) of 92.4%, higher than that of CoPc/MXene–F (84.0%) under the same conditions. Mechanistic explorations show that the excellent performance is attributed to the electron-donating property of –OH enriching the electron density of Co, which optimizes the binding strength for intermediates and therefore boosts the ECRR performance. The simple synthesis method opens up a new avenue for regulating the electronic states of active sites and further the intermediate adsorption strength for efficient electrocatalyst design.

Graphical abstract: Tunable functional groups on MXene regulating the catalytic property of anchored cobalt phthalocyanine for electrochemical CO2 reduction

Supplementary files

Article information

Article type
Research Article
Submitted
08 iyn 2023
Accepted
21 iyl 2023
First published
22 iyl 2023

Inorg. Chem. Front., 2023,10, 5371-5378

Tunable functional groups on MXene regulating the catalytic property of anchored cobalt phthalocyanine for electrochemical CO2 reduction

Z. Zhou, F. Yu, Y. You, J. Zhan and L. Zhang, Inorg. Chem. Front., 2023, 10, 5371 DOI: 10.1039/D3QI01070H

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