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Removal of mercury(II) from aqueous solution by partially reduced graphene oxide
Mercury (Hg(II)) has been classified as a pollutant and its removal from aqueous sources is considered a priority for public health as well as ecosystem protection policies. Oxidized graphenes have attracted vast interest in water purification and wastewater treatment. In this report, a partially re...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9018808/ https://www.ncbi.nlm.nih.gov/pubmed/35440687 http://dx.doi.org/10.1038/s41598-022-10259-z |
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author | Tene, Talia Arias Arias, Fabian Guevara, Marco Nuñez, Adriana Villamagua, Luis Tapia, Carlos Pisarra, Michele Torres, F. Javier Caputi, Lorenzo S. Vacacela Gomez, Cristian |
author_facet | Tene, Talia Arias Arias, Fabian Guevara, Marco Nuñez, Adriana Villamagua, Luis Tapia, Carlos Pisarra, Michele Torres, F. Javier Caputi, Lorenzo S. Vacacela Gomez, Cristian |
author_sort | Tene, Talia |
collection | PubMed |
description | Mercury (Hg(II)) has been classified as a pollutant and its removal from aqueous sources is considered a priority for public health as well as ecosystem protection policies. Oxidized graphenes have attracted vast interest in water purification and wastewater treatment. In this report, a partially reduced graphene oxide is proposed as a pristine adsorbent material for Hg(II) removal. The proposed material exhibits a high saturation Hg(II) uptake capacity of 110.21 mg g(−1), and can effectively reduce the Hg(II) concentration from 150 mg L(−1) to concentrations smaller than 40 mg L(−1), with an efficiency of about 75% within 20 min. The adsorption of Hg(II) on reduced graphene oxide shows a mixed physisorption–chemisorption process. Density functional theory calculations confirm that Hg atom adsorbs preferentially on clean zones rather than locations containing oxygen functional groups. The present work, therefore, presents new findings for Hg(II) adsorbent materials based on partially reduced graphene oxide, providing a new perspective for removing Hg(II). |
format | Online Article Text |
id | pubmed-9018808 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-90188082022-04-21 Removal of mercury(II) from aqueous solution by partially reduced graphene oxide Tene, Talia Arias Arias, Fabian Guevara, Marco Nuñez, Adriana Villamagua, Luis Tapia, Carlos Pisarra, Michele Torres, F. Javier Caputi, Lorenzo S. Vacacela Gomez, Cristian Sci Rep Article Mercury (Hg(II)) has been classified as a pollutant and its removal from aqueous sources is considered a priority for public health as well as ecosystem protection policies. Oxidized graphenes have attracted vast interest in water purification and wastewater treatment. In this report, a partially reduced graphene oxide is proposed as a pristine adsorbent material for Hg(II) removal. The proposed material exhibits a high saturation Hg(II) uptake capacity of 110.21 mg g(−1), and can effectively reduce the Hg(II) concentration from 150 mg L(−1) to concentrations smaller than 40 mg L(−1), with an efficiency of about 75% within 20 min. The adsorption of Hg(II) on reduced graphene oxide shows a mixed physisorption–chemisorption process. Density functional theory calculations confirm that Hg atom adsorbs preferentially on clean zones rather than locations containing oxygen functional groups. The present work, therefore, presents new findings for Hg(II) adsorbent materials based on partially reduced graphene oxide, providing a new perspective for removing Hg(II). Nature Publishing Group UK 2022-04-19 /pmc/articles/PMC9018808/ /pubmed/35440687 http://dx.doi.org/10.1038/s41598-022-10259-z Text en © The Author(s) 2022 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 Tene, Talia Arias Arias, Fabian Guevara, Marco Nuñez, Adriana Villamagua, Luis Tapia, Carlos Pisarra, Michele Torres, F. Javier Caputi, Lorenzo S. Vacacela Gomez, Cristian Removal of mercury(II) from aqueous solution by partially reduced graphene oxide |
title | Removal of mercury(II) from aqueous solution by partially reduced graphene oxide |
title_full | Removal of mercury(II) from aqueous solution by partially reduced graphene oxide |
title_fullStr | Removal of mercury(II) from aqueous solution by partially reduced graphene oxide |
title_full_unstemmed | Removal of mercury(II) from aqueous solution by partially reduced graphene oxide |
title_short | Removal of mercury(II) from aqueous solution by partially reduced graphene oxide |
title_sort | removal of mercury(ii) from aqueous solution by partially reduced graphene oxide |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9018808/ https://www.ncbi.nlm.nih.gov/pubmed/35440687 http://dx.doi.org/10.1038/s41598-022-10259-z |
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