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  A Supported Bismuth Halide Perovskite Photocatalyst for Selective Aliphatic and Aromatic C–H Bond Activation

Dai, Y., Poidevin, C., Ochoa-Hernández, C., Auer, A. A., & Tüysüz, H. (2020). A Supported Bismuth Halide Perovskite Photocatalyst for Selective Aliphatic and Aromatic C–H Bond Activation. Angewandte Chemie, International Edition, 59(14), 5788-5796. doi:10.1002/anie.201915034.

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 Creators:
Dai, Yitao1, Author           
Poidevin, Corentin2, Author           
Ochoa-Hernández, Cristina3, Author           
Auer, Alexander A.2, Author           
Tüysüz, Harun1, Author           
Affiliations:
1Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
2Research Group Auer, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_2541705              
3Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              

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Free keywords: bismuth; nanoparticles; perovskites; photocatalysis; SBA-15 silica
 Abstract: Direct selective oxidation of hydrocarbons to oxygenates by O2 is challenging. Catalysts are limited by the low activity and narrow application scope, and the main focus is on active C−H bonds at benzylic positions. In this work, stable, lead‐free, Cs3Bi2Br9 halide perovskites are integrated within the pore channels of mesoporous SBA‐15 silica and demonstrate their photocatalytic potentials for C−H bond activation. The composite photocatalysts can effectively oxidize hydrocarbons (C5 to C16 including aromatic and aliphatic alkanes) with a conversion rate up to 32900 μmol gcat−1 h−1 and excellent selectivity (>99 %) towards aldehydes and ketones under visible‐light irradiation. Isotopic labeling, in situ spectroscopic studies, and DFT calculations reveal that well‐dispersed small perovskite nanoparticles (2–5 nm) possess enhanced electron–hole separation and a close contact with hydrocarbons that facilitates C(sp3)−H bond activation by photoinduced charges.

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Language(s): eng - English
 Dates: 2019-11-252019-12-182020-03-20
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/anie.201915034
 Degree: -

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Title: Angewandte Chemie, International Edition
  Abbreviation : Angew. Chem., Int. Ed.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 59 (14) Sequence Number: - Start / End Page: 5788 - 5796 Identifier: ISSN: 1433-7851
CoNE: https://pure.mpg.de/cone/journals/resource/1433-7851