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The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine

Oxygen-containing functional groups tend to induce a strong interaction between solid adsorbents and iodine molecules, yet have not been systematically investigated. Herein, on the basis of a series of nitric acid-treated graphene oxide (GO) with different contents of oxygen functional groups for io...

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Autores principales: Zhang, Qian, Gao, Yangyang, Xu, Zhanglian, Wang, Sheng, Kobayashi, Hisayoshi, Wang, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766158/
https://www.ncbi.nlm.nih.gov/pubmed/33348796
http://dx.doi.org/10.3390/ma13245770
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author Zhang, Qian
Gao, Yangyang
Xu, Zhanglian
Wang, Sheng
Kobayashi, Hisayoshi
Wang, Jie
author_facet Zhang, Qian
Gao, Yangyang
Xu, Zhanglian
Wang, Sheng
Kobayashi, Hisayoshi
Wang, Jie
author_sort Zhang, Qian
collection PubMed
description Oxygen-containing functional groups tend to induce a strong interaction between solid adsorbents and iodine molecules, yet have not been systematically investigated. Herein, on the basis of a series of nitric acid-treated graphene oxide (GO) with different contents of oxygen functional groups for iodine adsorption, it was found that the iodine uptake capacity is proportionate to the oxygen content and the diversities of oxygen-containing groups. The density functional theory (DFT) calculation results also suggest that oxygen-containing groups result in strong interactions between iodine molecules and the adsorbents through a covalent bond-forming process, among which -OH groups possess a higher adsorption energy averagely. Such theoretical and experimental work deepens our understanding of the effects of oxygen functional groups on iodine adsorption and provides novel ideas for future design and synthesis of high-performance solid adsorbents for radioactive iodine.
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spelling pubmed-77661582020-12-28 The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine Zhang, Qian Gao, Yangyang Xu, Zhanglian Wang, Sheng Kobayashi, Hisayoshi Wang, Jie Materials (Basel) Article Oxygen-containing functional groups tend to induce a strong interaction between solid adsorbents and iodine molecules, yet have not been systematically investigated. Herein, on the basis of a series of nitric acid-treated graphene oxide (GO) with different contents of oxygen functional groups for iodine adsorption, it was found that the iodine uptake capacity is proportionate to the oxygen content and the diversities of oxygen-containing groups. The density functional theory (DFT) calculation results also suggest that oxygen-containing groups result in strong interactions between iodine molecules and the adsorbents through a covalent bond-forming process, among which -OH groups possess a higher adsorption energy averagely. Such theoretical and experimental work deepens our understanding of the effects of oxygen functional groups on iodine adsorption and provides novel ideas for future design and synthesis of high-performance solid adsorbents for radioactive iodine. MDPI 2020-12-17 /pmc/articles/PMC7766158/ /pubmed/33348796 http://dx.doi.org/10.3390/ma13245770 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Qian
Gao, Yangyang
Xu, Zhanglian
Wang, Sheng
Kobayashi, Hisayoshi
Wang, Jie
The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine
title The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine
title_full The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine
title_fullStr The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine
title_full_unstemmed The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine
title_short The Effects of Oxygen Functional Groups on Graphene Oxide on the Efficient Adsorption of Radioactive Iodine
title_sort effects of oxygen functional groups on graphene oxide on the efficient adsorption of radioactive iodine
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766158/
https://www.ncbi.nlm.nih.gov/pubmed/33348796
http://dx.doi.org/10.3390/ma13245770
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