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Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor

The importance of discovering the true catalytically active species involved in photocatalytic systems allows for a better and more general understanding of photocatalytic processes, which eventually may help to improve their efficiency. Bi(2)O(3) has been used as a heterogeneous photocatalyst and i...

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Autores principales: Riente, Paola, Fianchini, Mauro, Llanes, Patricia, Pericàs, Miquel A., Noël, Timothy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7841156/
https://www.ncbi.nlm.nih.gov/pubmed/33504763
http://dx.doi.org/10.1038/s41467-020-20882-x
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author Riente, Paola
Fianchini, Mauro
Llanes, Patricia
Pericàs, Miquel A.
Noël, Timothy
author_facet Riente, Paola
Fianchini, Mauro
Llanes, Patricia
Pericàs, Miquel A.
Noël, Timothy
author_sort Riente, Paola
collection PubMed
description The importance of discovering the true catalytically active species involved in photocatalytic systems allows for a better and more general understanding of photocatalytic processes, which eventually may help to improve their efficiency. Bi(2)O(3) has been used as a heterogeneous photocatalyst and is able to catalyze several synthetically important visible-light-driven organic transformations. However, insight into the operative catalyst involved in the photocatalytic process is hitherto missing. Herein, we show through a combination of theoretical and experimental studies that the perceived heterogeneous photocatalysis with Bi(2)O(3) in the presence of alkyl bromides involves a homogeneous Bi(n)Br(m) species, which is the true photocatalyst operative in the reaction. Hence, Bi(2)O(3) can be regarded as a precatalyst which is slowly converted in an active homogeneous photocatalyst. This work can also be of importance to mechanistic studies involving other semiconductor-based photocatalytic processes.
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spelling pubmed-78411562021-02-08 Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor Riente, Paola Fianchini, Mauro Llanes, Patricia Pericàs, Miquel A. Noël, Timothy Nat Commun Article The importance of discovering the true catalytically active species involved in photocatalytic systems allows for a better and more general understanding of photocatalytic processes, which eventually may help to improve their efficiency. Bi(2)O(3) has been used as a heterogeneous photocatalyst and is able to catalyze several synthetically important visible-light-driven organic transformations. However, insight into the operative catalyst involved in the photocatalytic process is hitherto missing. Herein, we show through a combination of theoretical and experimental studies that the perceived heterogeneous photocatalysis with Bi(2)O(3) in the presence of alkyl bromides involves a homogeneous Bi(n)Br(m) species, which is the true photocatalyst operative in the reaction. Hence, Bi(2)O(3) can be regarded as a precatalyst which is slowly converted in an active homogeneous photocatalyst. This work can also be of importance to mechanistic studies involving other semiconductor-based photocatalytic processes. Nature Publishing Group UK 2021-01-27 /pmc/articles/PMC7841156/ /pubmed/33504763 http://dx.doi.org/10.1038/s41467-020-20882-x Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Riente, Paola
Fianchini, Mauro
Llanes, Patricia
Pericàs, Miquel A.
Noël, Timothy
Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor
title Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor
title_full Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor
title_fullStr Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor
title_full_unstemmed Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor
title_short Shedding light on the nature of the catalytically active species in photocatalytic reactions using Bi(2)O(3) semiconductor
title_sort shedding light on the nature of the catalytically active species in photocatalytic reactions using bi(2)o(3) semiconductor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7841156/
https://www.ncbi.nlm.nih.gov/pubmed/33504763
http://dx.doi.org/10.1038/s41467-020-20882-x
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