Volume 137, Issue 8 e202420398
Forschungsartikel

Dual Regulation of Sensitizers and Cluster Catalysts in Metal–Organic Frameworks to Boost H2 Evolution

Dr. Song Guo

Dr. Song Guo

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Chun-Wei Pan

Chun-Wei Pan

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Min Hou

Min Hou

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Yi-Tong Hou

Yi-Tong Hou

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Shuang Yao

Shuang Yao

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Prof. Tong-Bu Lu

Prof. Tong-Bu Lu

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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Prof. Zhi-Ming Zhang

Corresponding Author

Prof. Zhi-Ming Zhang

Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384 China

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First published: 25 November 2024

Abstract

Photocatalytic efficiency is closely correlated to visible-light absorption ability, electron transfer efficiency and catalytic center activity of photocatalysts, nevertheless, the concurrent management of these factors to improve photocatalytic efficiency remains underexplored. Herein, we proposed a sensitizer/catalyst dual regulation strategy on the polyoxometalate@Metal−Organic Framework (POM@MOF) molecular platform to construct highly efficient photocatalysts. Impressively, Ni−Sb9@UiO−Ir−C6, obtained by coupling strong sensitizing [Ir(coumarin 6)2(bpy)]+ with Ni−Sb9 POM with extremely exposed nickel site [NiO3(H2O)3], can drive H2 evolution with a turnover number of 326923, representing a record value among all the POM@MOF composite photocatalysts. This performance is over 34 times higher than that of the typical Ni4P2@UiO−Ir constructed from [Ir(ppy)2(bpy)]+ and Ni4P2 POM. Systematical investigations revealed that dual regulation of sensitizing and catalytic centers endowed Ni−Sb9@UiO−Ir−C6 with strong visible-light absorption, efficient inter-component electron transfer and high catalytic activity to concurrently promote H2 evolution. This work opens up a new avenue to develop highly active POM@MOF photocatalysts by dual regulation of sensitizing/catalytic centers at the molecular level.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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