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Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents

Heterojunction photocatalysts have recently emerged for use in degradation of organic pollutants, typically being suspended in effluent solution to degrade it. Post degradation, the catalyst must be removed from the treated solution, which consumes both energy and time. Moreover, the separation of n...

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Autores principales: Vavilapalli, Durga Sankar, Rosen, Johanna, Singh, Shubra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850944/
https://www.ncbi.nlm.nih.gov/pubmed/36756423
http://dx.doi.org/10.1039/d2ra06729c
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author Vavilapalli, Durga Sankar
Rosen, Johanna
Singh, Shubra
author_facet Vavilapalli, Durga Sankar
Rosen, Johanna
Singh, Shubra
author_sort Vavilapalli, Durga Sankar
collection PubMed
description Heterojunction photocatalysts have recently emerged for use in degradation of organic pollutants, typically being suspended in effluent solution to degrade it. Post degradation, the catalyst must be removed from the treated solution, which consumes both energy and time. Moreover, the separation of nano catalysts from the treated solution is challenging. In the present work, we explore fabrication of immobilized TiO(2)–PEDOT:PSS hybrid heterojunction catalysts with the support of a PVA (polyvinyl alcohol) matrix. These photocatalytic films do not require any steps to separate the powdered catalyst from the treated water. While the PVA-based films are unstable in water, their stability could be significantly enhanced by heat treatment, enabling efficient removal of organic effluents like methylene blue (MB) and bisphenol-A (BPA) from the aqueous solution under simulated sunlight irradiation. Over 20 cycles, the heterojunction photocatalyst maintained high photocatalytic activity and showed excellent stability. Hence, an immobilization of the TiO(2)–PEDOT:PSS hybrid heterojunction is suggested to be beneficial from the viewpoint of reproducible and recyclable materials for simple and efficient wastewater treatment.
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spelling pubmed-98509442023-02-07 Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents Vavilapalli, Durga Sankar Rosen, Johanna Singh, Shubra RSC Adv Chemistry Heterojunction photocatalysts have recently emerged for use in degradation of organic pollutants, typically being suspended in effluent solution to degrade it. Post degradation, the catalyst must be removed from the treated solution, which consumes both energy and time. Moreover, the separation of nano catalysts from the treated solution is challenging. In the present work, we explore fabrication of immobilized TiO(2)–PEDOT:PSS hybrid heterojunction catalysts with the support of a PVA (polyvinyl alcohol) matrix. These photocatalytic films do not require any steps to separate the powdered catalyst from the treated water. While the PVA-based films are unstable in water, their stability could be significantly enhanced by heat treatment, enabling efficient removal of organic effluents like methylene blue (MB) and bisphenol-A (BPA) from the aqueous solution under simulated sunlight irradiation. Over 20 cycles, the heterojunction photocatalyst maintained high photocatalytic activity and showed excellent stability. Hence, an immobilization of the TiO(2)–PEDOT:PSS hybrid heterojunction is suggested to be beneficial from the viewpoint of reproducible and recyclable materials for simple and efficient wastewater treatment. The Royal Society of Chemistry 2023-01-19 /pmc/articles/PMC9850944/ /pubmed/36756423 http://dx.doi.org/10.1039/d2ra06729c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Vavilapalli, Durga Sankar
Rosen, Johanna
Singh, Shubra
Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents
title Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents
title_full Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents
title_fullStr Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents
title_full_unstemmed Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents
title_short Immobilization of a TiO(2)–PEDOT:PSS hybrid heterojunction photocatalyst for degradation of organic effluents
title_sort immobilization of a tio(2)–pedot:pss hybrid heterojunction photocatalyst for degradation of organic effluents
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850944/
https://www.ncbi.nlm.nih.gov/pubmed/36756423
http://dx.doi.org/10.1039/d2ra06729c
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AT singhshubra immobilizationofatio2pedotpsshybridheterojunctionphotocatalystfordegradationoforganiceffluents