Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants

Photocatalysis is an emerging area of chemistry that takes advantage of light as the primary source of energy to carry out chemical transformations. In this context, organic photocatalysts appear as an alternative that has proven to be efficient in treating polluted effluents. Although organic photo...

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Detalhes bibliográficos
Autores: Blázquez-Moraleja, Alberto, Cabezuelo, Oscar, Martínez-Haya, R., Schmidt, Luciana C., Boscá, Francisco, Marín, María Luisa
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2023
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/364458
Acesso em linha:http://hdl.handle.net/10261/364458
Access Level:acceso abierto
Palavra-chave:Heterogeneous catalysis
homogeneous catalysis
kinetics
oxidation
photocatalysis
photochemistry
PhotoIUPAC 2022
reduction
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spelling Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutantsBlázquez-Moraleja, AlbertoCabezuelo, OscarMartínez-Haya, R.Schmidt, Luciana C.Boscá, FranciscoMarín, María LuisaHeterogeneous catalysishomogeneous catalysiskineticsoxidationphotocatalysisphotochemistryPhotoIUPAC 2022reductionPhotocatalysis is an emerging area of chemistry that takes advantage of light as the primary source of energy to carry out chemical transformations. In this context, organic photocatalysts appear as an alternative that has proven to be efficient in treating polluted effluents. Although organic photocatalysts are not able to generate hydroxyl radical, their photoactivated excited states generated using visible light can act as strong oxidants in most cases. In fact, pollutant photooxidation can be produced from an initial electron transfer between an excited state of an organic photocatalyst and the contaminant, generating their respective radical anion and cation (Type I mechanism). However, as most of the organic photocatalysts are able to generate singlet oxygen, pollutant degradation can also be initiated from this oxidative species (Type II mechanism). Moreover, the heterogenization of the photocatalysts seems the straightforward step to boost photostability and facilitate recovery after the reaction. In the present review, we chronicle our research progress and how interestingly, it cannot be assumed that the main reaction pathways of a photocatalyst are the same under homogeneous conditions as in heterogeneous media. Herein we have selected Rose Bengal (RB), Riboflavin (RF), and a perylene diimide derivative (PDI) to illustrate the different modes of action of these organic photocatalysts under homogeneous/heterogeneous conditions.We gratefully acknowledge the Universitat Politècnica de València, Universidad Complutense de Madrid, Ministerio de Universidades, and recovery plan Next GenerationEu for financial support for the postdoctoral contract María Zambrano for LCS and Margarita Salas for ABM; on behalf of the requalification of the Spanish University System (2021–2023). OCG is indebted to the Universitat Politècnica de València for the Predoctoral FPI fellowship (FPI-UPV/Subprograma 1). RMH acknowledges the subvention (APOSTD/124) for her contract founded by the Generalitat Valenciana and the Social European Found. Finally, we gratefully acknowledge the Spanish Ministry of Science, Innovation and Universities (PID2019-110441RB-C33 financed by MCIN/AEI/10.13039/501100011033).Peer reviewedWalter de GruyterMinisterio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/364458reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-110441RB-C33https://www.degruyter.com/document/doi/10.1515/pac-2022-1206/htmlSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3644582026-05-22T06:33:51Z
dc.title.none.fl_str_mv Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
title Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
spellingShingle Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
Blázquez-Moraleja, Alberto
Heterogeneous catalysis
homogeneous catalysis
kinetics
oxidation
photocatalysis
photochemistry
PhotoIUPAC 2022
reduction
title_short Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
title_full Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
title_fullStr Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
title_full_unstemmed Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
title_sort Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
dc.creator.none.fl_str_mv Blázquez-Moraleja, Alberto
Cabezuelo, Oscar
Martínez-Haya, R.
Schmidt, Luciana C.
Boscá, Francisco
Marín, María Luisa
author Blázquez-Moraleja, Alberto
author_facet Blázquez-Moraleja, Alberto
Cabezuelo, Oscar
Martínez-Haya, R.
Schmidt, Luciana C.
Boscá, Francisco
Marín, María Luisa
author_role author
author2 Cabezuelo, Oscar
Martínez-Haya, R.
Schmidt, Luciana C.
Boscá, Francisco
Marín, María Luisa
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Heterogeneous catalysis
homogeneous catalysis
kinetics
oxidation
photocatalysis
photochemistry
PhotoIUPAC 2022
reduction
topic Heterogeneous catalysis
homogeneous catalysis
kinetics
oxidation
photocatalysis
photochemistry
PhotoIUPAC 2022
reduction
description Photocatalysis is an emerging area of chemistry that takes advantage of light as the primary source of energy to carry out chemical transformations. In this context, organic photocatalysts appear as an alternative that has proven to be efficient in treating polluted effluents. Although organic photocatalysts are not able to generate hydroxyl radical, their photoactivated excited states generated using visible light can act as strong oxidants in most cases. In fact, pollutant photooxidation can be produced from an initial electron transfer between an excited state of an organic photocatalyst and the contaminant, generating their respective radical anion and cation (Type I mechanism). However, as most of the organic photocatalysts are able to generate singlet oxygen, pollutant degradation can also be initiated from this oxidative species (Type II mechanism). Moreover, the heterogenization of the photocatalysts seems the straightforward step to boost photostability and facilitate recovery after the reaction. In the present review, we chronicle our research progress and how interestingly, it cannot be assumed that the main reaction pathways of a photocatalyst are the same under homogeneous conditions as in heterogeneous media. Herein we have selected Rose Bengal (RB), Riboflavin (RF), and a perylene diimide derivative (PDI) to illustrate the different modes of action of these organic photocatalysts under homogeneous/heterogeneous conditions.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/364458
url http://hdl.handle.net/10261/364458
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-110441RB-C33
https://www.degruyter.com/document/doi/10.1515/pac-2022-1206/html
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Walter de Gruyter
publisher.none.fl_str_mv Walter de Gruyter
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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