Reusable Ag@TiO2-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern

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 wit...

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Autores principales:	Lamine Aoudjit, Hugo Salazar, Djamila Zioui, Aicha Sebti, Pedro Manuel Martins, Senentxu Lanceros-Mendez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ANFIS metronidazole micropollutants nanocomposite membrane photocatalysis water remediation Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/e3f4ce72e30d4df29584e3b89ec7a94d
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spelling	oai:doaj.org-article:e3f4ce72e30d4df29584e3b89ec7a94d2021-11-11T18:44:55ZReusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern10.3390/polym132137182073-4360https://doaj.org/article/e3f4ce72e30d4df29584e3b89ec7a94d2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3718https://doaj.org/toc/2073-4360Two significant limitations of using TiO<sub>2</sub> 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@TiO<sub>2</sub> 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@TiO<sub>2</sub>/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@TiO<sub>2</sub>/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.Lamine AoudjitHugo SalazarDjamila ZiouiAicha SebtiPedro Manuel MartinsSenentxu Lanceros-MendezMDPI AGarticleANFISmetronidazolemicropollutantsnanocomposite membranephotocatalysiswater remediationOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3718, p 3718 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ANFIS metronidazole micropollutants nanocomposite membrane photocatalysis water remediation Organic chemistry QD241-441
spellingShingle	ANFIS metronidazole micropollutants nanocomposite membrane photocatalysis water remediation Organic chemistry QD241-441 Lamine Aoudjit Hugo Salazar Djamila Zioui Aicha Sebti Pedro Manuel Martins Senentxu Lanceros-Mendez Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern
description	Two significant limitations of using TiO<sub>2</sub> 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@TiO<sub>2</sub> 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@TiO<sub>2</sub>/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@TiO<sub>2</sub>/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.
format	article
author	Lamine Aoudjit Hugo Salazar Djamila Zioui Aicha Sebti Pedro Manuel Martins Senentxu Lanceros-Mendez
author_facet	Lamine Aoudjit Hugo Salazar Djamila Zioui Aicha Sebti Pedro Manuel Martins Senentxu Lanceros-Mendez
author_sort	Lamine Aoudjit
title	Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern
title_short	Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern
title_full	Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern
title_fullStr	Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern
title_full_unstemmed	Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern
title_sort	reusable ag@tio<sub>2</sub>-based photocatalytic nanocomposite membranes for solar degradation of contaminants of emerging concern
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e3f4ce72e30d4df29584e3b89ec7a94d
work_keys_str_mv	AT lamineaoudjit reusableagtiosub2subbasedphotocatalyticnanocompositemembranesforsolardegradationofcontaminantsofemergingconcern AT hugosalazar reusableagtiosub2subbasedphotocatalyticnanocompositemembranesforsolardegradationofcontaminantsofemergingconcern AT djamilazioui reusableagtiosub2subbasedphotocatalyticnanocompositemembranesforsolardegradationofcontaminantsofemergingconcern AT aichasebti reusableagtiosub2subbasedphotocatalyticnanocompositemembranesforsolardegradationofcontaminantsofemergingconcern AT pedromanuelmartins reusableagtiosub2subbasedphotocatalyticnanocompositemembranesforsolardegradationofcontaminantsofemergingconcern AT senentxulancerosmendez reusableagtiosub2subbasedphotocatalyticnanocompositemembranesforsolardegradationofcontaminantsofemergingconcern
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Reusable Ag@TiO<sub>2</sub>-Based Photocatalytic Nanocomposite Membranes for Solar Degradation of Contaminants of Emerging Concern

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