MOFs Conferred with Transient Metal Centers for Enhanced Photocatalytic Activity

Xiaolang Chen; Shuning Xiao; Hao Wang; Wenchao Wang; Yong Cai; Guisheng Li; Minghua Qiao; Jian Zhu; Hexing Li; Dieqing Zhang; Yunfeng Lu

doi:10.1002/anie.202002375

MOFs Conferred with Transient Metal Centers for Enhanced Photocatalytic Activity

Angew Chem Int Ed Engl. 2020 Sep 21;59(39):17182-17186. doi: 10.1002/anie.202002375. Epub 2020 Jul 27.

Authors

Affiliations

¹ Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, 200234, P. R. China.
² Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China.
³ Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, 90095, USA.

PMID: 32463933
DOI: 10.1002/anie.202002375

Abstract

Highly effective photocatalysts for the hydrogen-evolution reaction were developed by conferring the linkers of NH₂ -MIL-125(Ti), a metal-organic framework (MOF) constructed from TiO_x clusters and 2-aminoterephthalic acid (linkers), with active copper centers. This design enables effective transfer of electrons from the linkers to the transient Cu²⁺ /Cu⁺ centers, leading to 7000-fold and 27-fold increase of carrier density and lifetime of photogenerated charges, respectively, as well as high-rate production of H₂ under visible-light irradiation. This work provides a novel design of a photocatalyst for hydrogen evolution using non-noble Cu²⁺ /Cu⁺ as co-catalysts.

Keywords: copper; electron transport; hydrogen evolution; metal-organic frameworks; photocatalysis.

Abstract

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