TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light

In this work, novel carbon microspheres supported TiO2 nanoparticles were prepared for the degradation of pharmaceuticals in water, selecting diclofenac, acetaminophen, and ibuprofen as target pollutants. Lignin, an important biomass byproduct from the paper industry and biorefineries, was transform...

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Detalles Bibliográficos
Autores: Abdelraheem, Wael H.M., Dionysiou, Dionysios D.
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/700605
Acceso en línea:http://hdl.handle.net/10486/700605
https://dx.doi.org/10.1016/j.seppur.2021.119169
Access Level:acceso abierto
Palabra clave:Degradation pathway
Diclofenac
Lignin
Pharmaceuticals
Solar photocatalysis
TiO2-carbon microspheres
Química
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spelling TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar lightAbdelraheem, Wael H.M.Dionysiou, Dionysios D.Degradation pathwayDiclofenacLigninPharmaceuticalsSolar photocatalysisTiO2-carbon microspheresQuímicaIn this work, novel carbon microspheres supported TiO2 nanoparticles were prepared for the degradation of pharmaceuticals in water, selecting diclofenac, acetaminophen, and ibuprofen as target pollutants. Lignin, an important biomass byproduct from the paper industry and biorefineries, was transformed in carbon microspheres by a novel approach based on a Fe-activated hydrothermal carbonization followed by pyrolysis at 900 °C. These carbon microspheres were further covered with TiO2 by a solvothermal treatment. The effects of several parameters including hydrothermal carbonization time and mass ratio (TiO2:carbon) on the catalytic activity of TiO2-carbon microspheres were investigated. The results revealed that the combination of long carbonization time and high TiO2:carbon ratio achieved superior TiO2-carbon microspheres (Ti2-C20) catalytic performance. Ti2-C20 achieved complete degradation of ibuprofen (5 mg·L−1) and diclofenac (5 mg·L−1) within 3 h under solar light and mineralization percentages close to 50%. Moreover, the photocatalytic performance remained high after five reuse cycles and was barely affected by the presence of common inorganic ions in treated wastewater (such as Cl–, NO3– and HCO3–). The degradation pathway of diclofenac was proposed, involving C-N bond cleavage, and subsequent hydroxylation and cyclization reactions leading to the formation of aliphatic carboxylic acids. Overall, promising photocatalysts were obtained from a biomass byproduct for effective degradation of pharmaceuticals with the assistance of solar lightThis research was funded by the Spanish State Research Agency (PID2019-106186RB-I00/AEI/10.13039/501100011033). M. Peñas-Garzón is indebted to Spanish MECD for a FPU grant (FPU16/00576 grant) and to Spanish MICIU for funding the international stay (EST18/00048 grant) at the Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati. Authors thank the Research Support Services of the University of Extremadura (SAIUEx) for its technical and scientific supportElsevierDepartamento de Ingeniería QuímicaFacultad de CienciasUAM. Departamento de Ingeniería Química20212021-06-21research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/700605https://dx.doi.org/10.1016/j.seppur.2021.119169reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7006052026-06-23T12:46:27Z
dc.title.none.fl_str_mv TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
title TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
spellingShingle TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
Abdelraheem, Wael H.M.
Degradation pathway
Diclofenac
Lignin
Pharmaceuticals
Solar photocatalysis
TiO2-carbon microspheres
Química
title_short TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
title_full TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
title_fullStr TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
title_full_unstemmed TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
title_sort TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light
dc.creator.none.fl_str_mv Abdelraheem, Wael H.M.
Dionysiou, Dionysios D.
author Abdelraheem, Wael H.M.
author_facet Abdelraheem, Wael H.M.
Dionysiou, Dionysios D.
author_role author
author2 Dionysiou, Dionysios D.
author2_role author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Química
Facultad de Ciencias
UAM. Departamento de Ingeniería Química
dc.subject.none.fl_str_mv Degradation pathway
Diclofenac
Lignin
Pharmaceuticals
Solar photocatalysis
TiO2-carbon microspheres
Química
topic Degradation pathway
Diclofenac
Lignin
Pharmaceuticals
Solar photocatalysis
TiO2-carbon microspheres
Química
description In this work, novel carbon microspheres supported TiO2 nanoparticles were prepared for the degradation of pharmaceuticals in water, selecting diclofenac, acetaminophen, and ibuprofen as target pollutants. Lignin, an important biomass byproduct from the paper industry and biorefineries, was transformed in carbon microspheres by a novel approach based on a Fe-activated hydrothermal carbonization followed by pyrolysis at 900 °C. These carbon microspheres were further covered with TiO2 by a solvothermal treatment. The effects of several parameters including hydrothermal carbonization time and mass ratio (TiO2:carbon) on the catalytic activity of TiO2-carbon microspheres were investigated. The results revealed that the combination of long carbonization time and high TiO2:carbon ratio achieved superior TiO2-carbon microspheres (Ti2-C20) catalytic performance. Ti2-C20 achieved complete degradation of ibuprofen (5 mg·L−1) and diclofenac (5 mg·L−1) within 3 h under solar light and mineralization percentages close to 50%. Moreover, the photocatalytic performance remained high after five reuse cycles and was barely affected by the presence of common inorganic ions in treated wastewater (such as Cl–, NO3– and HCO3–). The degradation pathway of diclofenac was proposed, involving C-N bond cleavage, and subsequent hydroxylation and cyclization reactions leading to the formation of aliphatic carboxylic acids. Overall, promising photocatalysts were obtained from a biomass byproduct for effective degradation of pharmaceuticals with the assistance of solar light
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-06-21
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/700605
https://dx.doi.org/10.1016/j.seppur.2021.119169
url http://hdl.handle.net/10486/700605
https://dx.doi.org/10.1016/j.seppur.2021.119169
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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