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Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide
In this study, graphene oxide (GO) was synthesized using Hummers method. The synthesized GO was characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer–Em...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8618333/ https://www.ncbi.nlm.nih.gov/pubmed/34835541 http://dx.doi.org/10.3390/nano11112780 |
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author | Abu-Nada, Abdulrahman Abdala, Ahmed McKay, Gordon |
author_facet | Abu-Nada, Abdulrahman Abdala, Ahmed McKay, Gordon |
author_sort | Abu-Nada, Abdulrahman |
collection | PubMed |
description | In this study, graphene oxide (GO) was synthesized using Hummers method. The synthesized GO was characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) nitrogen adsorption. The analyses confirmed the presence of oxygen functional groups (C=O and C-O-C) on the GO surface. These oxygen functional groups act as active sites in the adsorption Sr (II). The BET analysis revealed the surface area of GO of 232 m(2)/g with a pore volume of 0.40 cm(3)/g. The synthesized GO was used as an adsorbent for removing Sr (II) from aqueous solutions. The adsorption equilibrium and kinetic results were consistent with the Langmuir isotherm model and the pseudo-second-order kinetic model. A maximum strontium adsorption capacity of 131.4 mg/g was achieved. The results show that the GO has an excellent adsorption capability for removing Sr (II) from aqueous solutions and potential use in wastewater treatment applications. |
format | Online Article Text |
id | pubmed-8618333 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86183332021-11-27 Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide Abu-Nada, Abdulrahman Abdala, Ahmed McKay, Gordon Nanomaterials (Basel) Article In this study, graphene oxide (GO) was synthesized using Hummers method. The synthesized GO was characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) nitrogen adsorption. The analyses confirmed the presence of oxygen functional groups (C=O and C-O-C) on the GO surface. These oxygen functional groups act as active sites in the adsorption Sr (II). The BET analysis revealed the surface area of GO of 232 m(2)/g with a pore volume of 0.40 cm(3)/g. The synthesized GO was used as an adsorbent for removing Sr (II) from aqueous solutions. The adsorption equilibrium and kinetic results were consistent with the Langmuir isotherm model and the pseudo-second-order kinetic model. A maximum strontium adsorption capacity of 131.4 mg/g was achieved. The results show that the GO has an excellent adsorption capability for removing Sr (II) from aqueous solutions and potential use in wastewater treatment applications. MDPI 2021-10-20 /pmc/articles/PMC8618333/ /pubmed/34835541 http://dx.doi.org/10.3390/nano11112780 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Abu-Nada, Abdulrahman Abdala, Ahmed McKay, Gordon Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide |
title | Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide |
title_full | Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide |
title_fullStr | Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide |
title_full_unstemmed | Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide |
title_short | Isotherm and Kinetic Modeling of Strontium Adsorption on Graphene Oxide |
title_sort | isotherm and kinetic modeling of strontium adsorption on graphene oxide |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8618333/ https://www.ncbi.nlm.nih.gov/pubmed/34835541 http://dx.doi.org/10.3390/nano11112780 |
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