MOFs Conferred with Transient Metal Centers for Enhanced Photocatalytic Activity.

Authors :: Chen X
Xiao S
Wang H
Wang W
Cai Y
Li G
Qiao M
Zhu J
Li H
Zhang D
Lu Y
Source :: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2020 Sep 21; Vol. 59 (39), pp. 17182-17186. Date of Electronic Publication: 2020 Jul 27.
Publication Year :: 2020
Abstract: Highly effective photocatalysts for the hydrogen-evolution reaction were developed by conferring the linkers of NH <subscript>2</subscript> -MIL-125(Ti), a metal-organic framework (MOF) constructed from TiO <subscript>x</subscript> clusters and 2-aminoterephthalic acid (linkers), with active copper centers. This design enables effective transfer of electrons from the linkers to the transient Cu <superscript>2+</superscript> /Cu <superscript>+</superscript> 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 H <subscript>2</subscript> under visible-light irradiation. This work provides a novel design of a photocatalyst for hydrogen evolution using non-noble Cu <superscript>2+</superscript> /Cu <superscript>+</superscript> as co-catalysts.<br /> (© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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