Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern

Detalhes bibliográficos
Autor(a) principal: Aoudjit, L.
Data de Publicação: 2021
Outros Autores: Salazar, H., Zioui, D., Sebti, A., Martins, Pedro, Lanceros-Méndez, S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/75445
Resumo: Two significant limitations of using TiO2 nanoparticles for water treatment applications are reduced photocatalytic activity under visible radiation and difficulty recovering the particles after use. In this study, round-shaped Ag@TiO2 nanocomposites with a ≈21 nm diameter and a bandgap energy of 2.8 eV were synthesised by a deposition-precipitation method. These nanocomposites were immobilised into a porous poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) matrix and well-distributed within the pores. The photocatalytic activity of Ag@TiO2/PVDF-HFP against metronidazole (MNZ) under solar radiation was evaluated. Further, an adaptive neuro-fuzzy inference system (ANFIS) was applied to predict the effect of four independent variables, including initial pollutant concentration, pH, light irradiation intensity, and reaction time, on the photocatalytic performance of the composite membrane on MNZ degradation. The 10% Ag@TiO2/PVDF-HFP composite membrane showed a maximum removal efficiency of 100% after 5 h under solar radiation. After three use cycles, this efficiency remained practically constant, demonstrating the membranes’ reusability and suitability for water remediation applications
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spelling Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concernANFISMetronidazoleMicropollutantsNanocomposite membranePhotocatalysisWater remediationCiências Naturais::Ciências FísicasEngenharia e Tecnologia::NanotecnologiaScience & TechnologyTwo significant limitations of using TiO2 nanoparticles for water treatment applications are reduced photocatalytic activity under visible radiation and difficulty recovering the particles after use. In this study, round-shaped Ag@TiO2 nanocomposites with a ≈21 nm diameter and a bandgap energy of 2.8 eV were synthesised by a deposition-precipitation method. These nanocomposites were immobilised into a porous poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) matrix and well-distributed within the pores. The photocatalytic activity of Ag@TiO2/PVDF-HFP against metronidazole (MNZ) under solar radiation was evaluated. Further, an adaptive neuro-fuzzy inference system (ANFIS) was applied to predict the effect of four independent variables, including initial pollutant concentration, pH, light irradiation intensity, and reaction time, on the photocatalytic performance of the composite membrane on MNZ degradation. The 10% Ag@TiO2/PVDF-HFP composite membrane showed a maximum removal efficiency of 100% after 5 h under solar radiation. After three use cycles, this efficiency remained practically constant, demonstrating the membranes’ reusability and suitability for water remediation applicationse Solar Equipment Development Unit (UDES), Algeria. This work was also supported by the Portuguese Foundation for Science and Technology (FCT) in the framework of the strategic project UID/FIS/04650/2020 by FEDER funds through the COMPETE 2020-Programa Operacional Competitividade e Internacionalização (POCI) with the reference project POCI-01-0145-FEDER-006941, and project PTDC/CTMENE/5387/2014. H. Salazar thanks the FCT for the grants SFRH/BD/122373/2016. P.M. thanks the FCT for the contract xxx. Finally, the authors acknowledge funding by the Spanish State Research Agency (AEI) and the European Regional Development Fund (ERFD) through the project PID2019-106099RB-C43/AEI/10.13039/501100011033 and from the Basque Government Industry and Education Department under the ELKARTEK, HAZITEK and PIBA (PIBA-2018-06) programs, respectivelyMDPIUniversidade do MinhoAoudjit, L.Salazar, H.Zioui, D.Sebti, A.Martins, PedroLanceros-Méndez, S.202110000-01-01T00:00:00Z2021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/75445engAoudjit, L., Salazar, H., Zioui, D., Sebti, A., Martins, P. M., & Lanceros-Mendez, S. (2021). Reusable Ag@ TiO2-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern. Polymers, 13(21), 37182073-436010.3390/polym13213718https://www.mdpi.com/2073-4360/13/21/3718info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-29T01:19:17Zoai:repositorium.sdum.uminho.pt:1822/75445Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:14:01.742821Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
title Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
spellingShingle Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
Aoudjit, L.
ANFIS
Metronidazole
Micropollutants
Nanocomposite membrane
Photocatalysis
Water remediation
Ciências Naturais::Ciências Físicas
Engenharia e Tecnologia::Nanotecnologia
Science & Technology
title_short Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
title_full Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
title_fullStr Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
title_full_unstemmed Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
title_sort Reusable ag@tio2-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
author Aoudjit, L.
author_facet Aoudjit, L.
Salazar, H.
Zioui, D.
Sebti, A.
Martins, Pedro
Lanceros-Méndez, S.
author_role author
author2 Salazar, H.
Zioui, D.
Sebti, A.
Martins, Pedro
Lanceros-Méndez, S.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Aoudjit, L.
Salazar, H.
Zioui, D.
Sebti, A.
Martins, Pedro
Lanceros-Méndez, S.
dc.subject.por.fl_str_mv ANFIS
Metronidazole
Micropollutants
Nanocomposite membrane
Photocatalysis
Water remediation
Ciências Naturais::Ciências Físicas
Engenharia e Tecnologia::Nanotecnologia
Science & Technology
topic ANFIS
Metronidazole
Micropollutants
Nanocomposite membrane
Photocatalysis
Water remediation
Ciências Naturais::Ciências Físicas
Engenharia e Tecnologia::Nanotecnologia
Science & Technology
description Two significant limitations of using TiO2 nanoparticles for water treatment applications are reduced photocatalytic activity under visible radiation and difficulty recovering the particles after use. In this study, round-shaped Ag@TiO2 nanocomposites with a ≈21 nm diameter and a bandgap energy of 2.8 eV were synthesised by a deposition-precipitation method. These nanocomposites were immobilised into a porous poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) matrix and well-distributed within the pores. The photocatalytic activity of Ag@TiO2/PVDF-HFP against metronidazole (MNZ) under solar radiation was evaluated. Further, an adaptive neuro-fuzzy inference system (ANFIS) was applied to predict the effect of four independent variables, including initial pollutant concentration, pH, light irradiation intensity, and reaction time, on the photocatalytic performance of the composite membrane on MNZ degradation. The 10% Ag@TiO2/PVDF-HFP composite membrane showed a maximum removal efficiency of 100% after 5 h under solar radiation. After three use cycles, this efficiency remained practically constant, demonstrating the membranes’ reusability and suitability for water remediation applications
publishDate 2021
dc.date.none.fl_str_mv 10000-01-01T00:00:00Z
2021
2021-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/75445
url https://hdl.handle.net/1822/75445
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Aoudjit, L., Salazar, H., Zioui, D., Sebti, A., Martins, P. M., & Lanceros-Mendez, S. (2021). Reusable Ag@ TiO2-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern. Polymers, 13(21), 3718
2073-4360
10.3390/polym13213718
https://www.mdpi.com/2073-4360/13/21/3718
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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