Photochargeable Mn-Based Metal-Organic Framework and Decoupled Photocatalysis.

Autor: Wu S; Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Garching, Germany., Stanley PM; Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Garching, Germany., Deger SN; Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Garching, Germany., Hussain MZ; Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Garching, Germany., Jentys A; Chair of Industrial Chemistry and Heterogenous Catalysis, Department of Chemistry, and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Garching, Germany., Warnan J; Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry, and Catalysis Research Center (CRC), TUM School of Natural Sciences, Technical University of Munich, Garching, Germany.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Sep 09; Vol. 63 (37), pp. e202406385. Date of Electronic Publication: 2024 Jul 29.
DOI: 10.1002/anie.202406385
Abstrakt: Designing multifunctional materials that mimic the light-dark decoupling of natural photosynthesis is a key challenge in the field of energy conversion. Herein, we introduce MnBr-253, a precious metal-free metal-organic framework (MOF) built on Al nodes, bipyridine linkers and MnBr(CO) 3 (bipyridine) complexes. Upon irradiation, MnBr-253 colloids demonstrate an electron photocharging capacity of ~42 C ⋅ g -1 MOF , with state-of-the-art photocharging rate (1.28 C ⋅ s -1  ⋅ g -1 MOF ) and incident photon-to-electron conversion efficiency of ~9.4 % at 450 nm. Spectroscopic and computational studies support effective electron accumulation at the Mn complex while high porosity and Mn loading account for the notable electron storage performance. The charged MnBr-253 powders were successfully applied for hydrogen evolution under dark conditions thus emulating the light-decoupled reactivity of photosynthesis.
(© 2024 The Author(s). Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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