Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies

Uranium (U(VI)) and thorium (Th(IV)) ions produced by the nuclear and mining industries cause water pollution, thereby harming the environment and human health. In this study, gadolinium oxide-decorated polyvinyl alcohol-graphene oxide composite (PGO–Gd) was developed using a simple hydrothermal pro...

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Autores principales:	Lakshmi Prasanna Lingamdinne, Janardhan Reddy Koduru, Yoon-Young Chang, Mu. Naushad, Jae-Kyu Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	PVA-GO-Gd composite characterization polyvinyl alcohol polymer graphene oxide gadolinium oxide uranium Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/5c5ff8f95dbb4c01b62251000b505e78
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spelling	oai:doaj.org-article:5c5ff8f95dbb4c01b62251000b505e782021-11-11T18:48:38ZPolyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies10.3390/polym132138352073-4360https://doaj.org/article/5c5ff8f95dbb4c01b62251000b505e782021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3835https://doaj.org/toc/2073-4360Uranium (U(VI)) and thorium (Th(IV)) ions produced by the nuclear and mining industries cause water pollution, thereby harming the environment and human health. In this study, gadolinium oxide-decorated polyvinyl alcohol-graphene oxide composite (PGO–Gd) was developed using a simple hydrothermal process to treat U(VI) and Th(IV) ions in water. The developed material was structurally characterized by highly advanced spectroscopy and microscopy techniques. The effects of pH, equilibration time and temperature on both radionuclides (U(VI) and Th(IV)) adsorption by PGO–Gd were examined. The PGO–Gd composite adsorbed both metal ions satisfactorily, with adsorption capacities of 427.50 and 455.0 mg g<sup>−1</sup> at pH 4.0, respectively. The adsorption properties of both metal ions were found to be compatible with the Langmuir and pseudo–second-order kinetic models. Additionally, based on the thermodynamic characteristics, the adsorption was endothermic and spontaneous. Furthermore, the environmental viability of PGO–Gd and its application was demonstrated by studying its reusability in treating spiked surface water. PGO–Gd shows promise as an adsorbent in effectively removing both radionuclides from aqueous solutions.Lakshmi Prasanna LingamdinneJanardhan Reddy KoduruYoon-Young ChangMu. NaushadJae-Kyu YangMDPI AGarticlePVA-GO-Gd compositecharacterizationpolyvinyl alcohol polymergraphene oxidegadolinium oxideuraniumOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3835, p 3835 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PVA-GO-Gd composite characterization polyvinyl alcohol polymer graphene oxide gadolinium oxide uranium Organic chemistry QD241-441
spellingShingle	PVA-GO-Gd composite characterization polyvinyl alcohol polymer graphene oxide gadolinium oxide uranium Organic chemistry QD241-441 Lakshmi Prasanna Lingamdinne Janardhan Reddy Koduru Yoon-Young Chang Mu. Naushad Jae-Kyu Yang Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies
description	Uranium (U(VI)) and thorium (Th(IV)) ions produced by the nuclear and mining industries cause water pollution, thereby harming the environment and human health. In this study, gadolinium oxide-decorated polyvinyl alcohol-graphene oxide composite (PGO–Gd) was developed using a simple hydrothermal process to treat U(VI) and Th(IV) ions in water. The developed material was structurally characterized by highly advanced spectroscopy and microscopy techniques. The effects of pH, equilibration time and temperature on both radionuclides (U(VI) and Th(IV)) adsorption by PGO–Gd were examined. The PGO–Gd composite adsorbed both metal ions satisfactorily, with adsorption capacities of 427.50 and 455.0 mg g<sup>−1</sup> at pH 4.0, respectively. The adsorption properties of both metal ions were found to be compatible with the Langmuir and pseudo–second-order kinetic models. Additionally, based on the thermodynamic characteristics, the adsorption was endothermic and spontaneous. Furthermore, the environmental viability of PGO–Gd and its application was demonstrated by studying its reusability in treating spiked surface water. PGO–Gd shows promise as an adsorbent in effectively removing both radionuclides from aqueous solutions.
format	article
author	Lakshmi Prasanna Lingamdinne Janardhan Reddy Koduru Yoon-Young Chang Mu. Naushad Jae-Kyu Yang
author_facet	Lakshmi Prasanna Lingamdinne Janardhan Reddy Koduru Yoon-Young Chang Mu. Naushad Jae-Kyu Yang
author_sort	Lakshmi Prasanna Lingamdinne
title	Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies
title_short	Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies
title_full	Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies
title_fullStr	Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies
title_full_unstemmed	Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies
title_sort	polyvinyl alcohol polymer functionalized graphene oxide decorated with gadolinium oxide for sequestration of radionuclides from aqueous medium: characterization, mechanism, and environmental feasibility studies
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5c5ff8f95dbb4c01b62251000b505e78
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Polyvinyl Alcohol Polymer Functionalized Graphene Oxide Decorated with Gadolinium Oxide for Sequestration of Radionuclides from Aqueous Medium: Characterization, Mechanism, and Environmental Feasibility Studies

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