Issue 6, 2024

Iridium complex modified MOFs for enhancing photocatalytic hydrogen evolution

Abstract

In this paper, we prepared an iridium(III) complex modified MOF (cmrIr/Pt@UiO-66-NH2) to combine the excellent light absorption properties of iridium(III) complexes and good photostability of metal–organic frameworks (MOFs). Photocatalytic tests show that even with extremely low content of cmrIr, cmrIr/Pt@UiO-66-NH2 achieves enhanced hydrogen evolution performance while maintaining the inherent photostability of the MOF. The hydrogen evolution amount of cmrIr/Pt@UiO-66-NH2 (with only 0.2% of Ir content) is 446.4 μmol g−1, which is about 2.5 times that of Pt@UiO-66-NH2 (180.7 μmol g−1). Solid UV, photocurrent response and electrochemical impedance tests indicate that the introduction of the iridium(III) complex promotes the separation of electrons and holes, thus sensitizing the MOF and resulting in enhanced photocatalytic activity. This study provides a new insight for the design of hybrid material photocatalysts.

Graphical abstract: Iridium complex modified MOFs for enhancing photocatalytic hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
20 3 2024
Accepted
03 5 2024
First published
06 5 2024
This article is Open Access
Creative Commons BY-NC license

Energy Adv., 2024,3, 1414-1421

Iridium complex modified MOFs for enhancing photocatalytic hydrogen evolution

Y. Wang, Y. Huang, S. Liu, S. Cui, Y. Zhang and P. Deng, Energy Adv., 2024, 3, 1414 DOI: 10.1039/D4YA00184B

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