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One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process

Herein, a binary nanocomposite CdS/CeO(2) has been fabricated via a one-pot co-precipitation method for the degradation of Rose Bengal (RB) dye. The structure, surface morphology, composition, and surface area of the prepared composite were characterized by transmission electron microscopy, scanning...

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Autores principales: Gadore, Vishal, Mishra, Soumya Ranjan, Ahmaruzzaman, Md.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10182039/
https://www.ncbi.nlm.nih.gov/pubmed/37173397
http://dx.doi.org/10.1038/s41598-023-34742-3
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author Gadore, Vishal
Mishra, Soumya Ranjan
Ahmaruzzaman, Md.
author_facet Gadore, Vishal
Mishra, Soumya Ranjan
Ahmaruzzaman, Md.
author_sort Gadore, Vishal
collection PubMed
description Herein, a binary nanocomposite CdS/CeO(2) has been fabricated via a one-pot co-precipitation method for the degradation of Rose Bengal (RB) dye. The structure, surface morphology, composition, and surface area of the prepared composite were characterized by transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, Brunaur–Emmett–Teller analysis UV–Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. The prepared CdS/CeO(2)(1:1) nanocomposite has a particle size of 8.9 ± 0.3 nm and a surface area of 51.30 m(2)/g. All the tests indicated the agglomeration of CdS nanoparticles over the surface of CeO(2). The prepared composite showed excellent photocatalytic activity in the presence of hydrogen peroxide under solar irradiation towards the degradation of Rose Bengal. Near to about complete degradation of 190 ppm of RB dye could be achieved within 60 min under optimum conditions. The enhanced photocatalytic activity was attributed to the delayed charge recombination rate and a lower bandgap of the photocatalyst. The degradation process was found to follow pseudo-first-order kinetics with a rate constant of 0.05824 min(−1). The prepared sample showed excellent stability and reusability and maintained about 87% of the photocatalytic efficiency till the fifth cycle. A plausible mechanism for the degradation of the dye is also presented based on the scavenger experiments.
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spelling pubmed-101820392023-05-14 One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process Gadore, Vishal Mishra, Soumya Ranjan Ahmaruzzaman, Md. Sci Rep Article Herein, a binary nanocomposite CdS/CeO(2) has been fabricated via a one-pot co-precipitation method for the degradation of Rose Bengal (RB) dye. The structure, surface morphology, composition, and surface area of the prepared composite were characterized by transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, Brunaur–Emmett–Teller analysis UV–Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. The prepared CdS/CeO(2)(1:1) nanocomposite has a particle size of 8.9 ± 0.3 nm and a surface area of 51.30 m(2)/g. All the tests indicated the agglomeration of CdS nanoparticles over the surface of CeO(2). The prepared composite showed excellent photocatalytic activity in the presence of hydrogen peroxide under solar irradiation towards the degradation of Rose Bengal. Near to about complete degradation of 190 ppm of RB dye could be achieved within 60 min under optimum conditions. The enhanced photocatalytic activity was attributed to the delayed charge recombination rate and a lower bandgap of the photocatalyst. The degradation process was found to follow pseudo-first-order kinetics with a rate constant of 0.05824 min(−1). The prepared sample showed excellent stability and reusability and maintained about 87% of the photocatalytic efficiency till the fifth cycle. A plausible mechanism for the degradation of the dye is also presented based on the scavenger experiments. Nature Publishing Group UK 2023-05-12 /pmc/articles/PMC10182039/ /pubmed/37173397 http://dx.doi.org/10.1038/s41598-023-34742-3 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Gadore, Vishal
Mishra, Soumya Ranjan
Ahmaruzzaman, Md.
One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
title One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
title_full One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
title_fullStr One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
title_full_unstemmed One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
title_short One-pot synthesis of CdS/CeO(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
title_sort one-pot synthesis of cds/ceo(2) heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10182039/
https://www.ncbi.nlm.nih.gov/pubmed/37173397
http://dx.doi.org/10.1038/s41598-023-34742-3
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