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In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants

Photocatalysis is an eco-friendly promising approach to the degradation of textile dyes. The majority of reported studies involved remediation of dyes with an initial concentration ≤50 mg/L, which was away from the existing values in textile wastewater. Herein, a simple solvothermal route was utiliz...

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Autores principales: Abdel Aziz, Yasmeen S., Sanad, Moustafa M. S., Abdelhameed, Reda M., Zaki, Ayman H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9845943/
https://www.ncbi.nlm.nih.gov/pubmed/36688034
http://dx.doi.org/10.3389/fchem.2022.1102920
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author Abdel Aziz, Yasmeen S.
Sanad, Moustafa M. S.
Abdelhameed, Reda M.
Zaki, Ayman H.
author_facet Abdel Aziz, Yasmeen S.
Sanad, Moustafa M. S.
Abdelhameed, Reda M.
Zaki, Ayman H.
author_sort Abdel Aziz, Yasmeen S.
collection PubMed
description Photocatalysis is an eco-friendly promising approach to the degradation of textile dyes. The majority of reported studies involved remediation of dyes with an initial concentration ≤50 mg/L, which was away from the existing values in textile wastewater. Herein, a simple solvothermal route was utilized to synthesize CoFe(2)O(4)@UiO-66 core-shell heterojunction photocatalyst for the first time. The photocatalytic performance of the as-synthesized catalysts was assessed through the photodegradation of methylene blue (MB) and methyl orange (MO) dyes at an initial concentration (100 mg/L). Under simulated solar irradiation, improved photocatalytic performance was accomplished by as-obtained CoFe(2)O(4)@UiO-66 heterojunction compared to bare UiO-66 and CoFe(2)O(4). The overall removal efficiency of dyes (100 mg/L) over CoFe(2)O(4)@UiO-66 (50 mg/L) reached >60% within 180 min. The optical and photoelectrochemical measurements showed an enhanced visible light absorption capacity as well as effective interfacial charge separation and transfer over CoFe(2)O(4)@UiO-66, emphasizing the successful construction of heterojunction. The degradation mechanism was further explored, which revealed the contribution of holes (h(+)), superoxide (•O(2) (−)), and hydroxyl (•OH) radicals in the degradation process, however, h(+) were the predominant reactive species. This work might open up new insights for designing MOF-based core-shell heterostructured photocatalysts for the remediation of industrial organic pollutants.
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spelling pubmed-98459432023-01-19 In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants Abdel Aziz, Yasmeen S. Sanad, Moustafa M. S. Abdelhameed, Reda M. Zaki, Ayman H. Front Chem Chemistry Photocatalysis is an eco-friendly promising approach to the degradation of textile dyes. The majority of reported studies involved remediation of dyes with an initial concentration ≤50 mg/L, which was away from the existing values in textile wastewater. Herein, a simple solvothermal route was utilized to synthesize CoFe(2)O(4)@UiO-66 core-shell heterojunction photocatalyst for the first time. The photocatalytic performance of the as-synthesized catalysts was assessed through the photodegradation of methylene blue (MB) and methyl orange (MO) dyes at an initial concentration (100 mg/L). Under simulated solar irradiation, improved photocatalytic performance was accomplished by as-obtained CoFe(2)O(4)@UiO-66 heterojunction compared to bare UiO-66 and CoFe(2)O(4). The overall removal efficiency of dyes (100 mg/L) over CoFe(2)O(4)@UiO-66 (50 mg/L) reached >60% within 180 min. The optical and photoelectrochemical measurements showed an enhanced visible light absorption capacity as well as effective interfacial charge separation and transfer over CoFe(2)O(4)@UiO-66, emphasizing the successful construction of heterojunction. The degradation mechanism was further explored, which revealed the contribution of holes (h(+)), superoxide (•O(2) (−)), and hydroxyl (•OH) radicals in the degradation process, however, h(+) were the predominant reactive species. This work might open up new insights for designing MOF-based core-shell heterostructured photocatalysts for the remediation of industrial organic pollutants. Frontiers Media S.A. 2023-01-04 /pmc/articles/PMC9845943/ /pubmed/36688034 http://dx.doi.org/10.3389/fchem.2022.1102920 Text en Copyright © 2023 Abdel Aziz, Sanad, Abdelhameed and Zaki. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Abdel Aziz, Yasmeen S.
Sanad, Moustafa M. S.
Abdelhameed, Reda M.
Zaki, Ayman H.
In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
title In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
title_full In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
title_fullStr In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
title_full_unstemmed In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
title_short In-situ construction of Zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
title_sort in-situ construction of zr-based metal-organic framework core-shell heterostructure for photocatalytic degradation of organic pollutants
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9845943/
https://www.ncbi.nlm.nih.gov/pubmed/36688034
http://dx.doi.org/10.3389/fchem.2022.1102920
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