Issue 17, 2024

Exposing coordination-unsaturated Co sites in Co-MOF for efficient photocatalytic water oxidation

Abstract

Water oxidation to molecular dioxygen driven by visible light is essential but difficult in solar fuel production due to its sluggish reaction kinetics. Although the catalytic process is highly dependent on the coordination-unsaturated metal sites in coordination catalysts, the controllable design of catalysts with such catalytic sites remains challenging. Herein, we report two new Co-MOFs (CoBIM-1 and CoBIM-2) for photocatalytic water oxidation under visible light. The coordination environment of Co in Co-MOFs can be easily manipulated by changing the atmosphere and concentration of deprotonated solvent during synthesis. CoBIM-1 with coordinatively unsaturated Co sites showed good performance with an O2 production of 2.0 mmol g−1 h−1, in sharp contrast to its counterpart CoBIM-2. Furthermore, through isotope tracing experiments, we confirmed that the dioxygen was produced from water oxidation. This work highlights that the atmosphere during synthesis and solvent selection greatly regulate the crystal structures of MOFs and further manipulate their photocatalytic performance.

Graphical abstract: Exposing coordination-unsaturated Co sites in Co-MOF for efficient photocatalytic water oxidation

Supplementary files

Article information

Article type
Research Article
Submitted
17 avr. 2024
Accepted
20 juil. 2024
First published
22 juil. 2024

Inorg. Chem. Front., 2024,11, 5484-5489

Exposing coordination-unsaturated Co sites in Co-MOF for efficient photocatalytic water oxidation

J. Zhou, X. Guan, H. Zhang, D. Luo, X. Wang, X. Zhou and D. Li, Inorg. Chem. Front., 2024, 11, 5484 DOI: 10.1039/D4QI00968A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements