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Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite
In this work, reduced graphene oxide-nickel (RGO–Ni) nanocomposite is synthesized. X-ray diffraction (XRD), scanning electron microscopy (SEM) and SEM–EDS (Energy Dispersive X-Ray Spectroscopy) are used to study the crystalline nature, morphology and elemental composition of the RGO–Ni nanocomposite...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8093476/ https://www.ncbi.nlm.nih.gov/pubmed/33997391 http://dx.doi.org/10.1016/j.heliyon.2021.e06851 |
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author | Jinendra, Usha Bilehal, Dinesh Nagabhushana, B.M. Kumar, Avvaru Praveen |
author_facet | Jinendra, Usha Bilehal, Dinesh Nagabhushana, B.M. Kumar, Avvaru Praveen |
author_sort | Jinendra, Usha |
collection | PubMed |
description | In this work, reduced graphene oxide-nickel (RGO–Ni) nanocomposite is synthesized. X-ray diffraction (XRD), scanning electron microscopy (SEM) and SEM–EDS (Energy Dispersive X-Ray Spectroscopy) are used to study the crystalline nature, morphology and elemental composition of the RGO–Ni nanocomposite, respectively. As synthesized RGO–Ni nanocomposite is used to develop selective adsorptive removal of Rhodamine B (RhB) dye from the aqueous solution. The experiments have been performed to investigate RhB uptake via RGO–Ni nanocomposites which include, contact time (60 min), initial dye concentration (50 mg/100 ml), adsorbent dosage (0.5 mg) and pH 8 of dye solution. The equilibrium concentration is determined by using different models namely, Freundlich, Langmuir and Tempkin. Langmuir isotherm has been fitted well. Langmuir and Tempkin equations are determined to have good agreement with the correlation coefficient data. The kinetic study concluded that RhB dye adsorption follows with the pseudo-second-order kinetic model. Further, adsorption mechanism of RGO–Ni is proposed which involves three steps. The synthesized adsorbent is compared with the other adsorbents in the literature and indicates that RGO–Ni nanocomposite used in this study shown better results for a particular adsorption capacity than polymeric, natural and synthetic bioadsorbents. The regeneration and reusability experiments suggest RGO–Ni nanocomposite can be used for many numbers of times for purification/adsorption. |
format | Online Article Text |
id | pubmed-8093476 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-80934762021-05-13 Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite Jinendra, Usha Bilehal, Dinesh Nagabhushana, B.M. Kumar, Avvaru Praveen Heliyon Research Article In this work, reduced graphene oxide-nickel (RGO–Ni) nanocomposite is synthesized. X-ray diffraction (XRD), scanning electron microscopy (SEM) and SEM–EDS (Energy Dispersive X-Ray Spectroscopy) are used to study the crystalline nature, morphology and elemental composition of the RGO–Ni nanocomposite, respectively. As synthesized RGO–Ni nanocomposite is used to develop selective adsorptive removal of Rhodamine B (RhB) dye from the aqueous solution. The experiments have been performed to investigate RhB uptake via RGO–Ni nanocomposites which include, contact time (60 min), initial dye concentration (50 mg/100 ml), adsorbent dosage (0.5 mg) and pH 8 of dye solution. The equilibrium concentration is determined by using different models namely, Freundlich, Langmuir and Tempkin. Langmuir isotherm has been fitted well. Langmuir and Tempkin equations are determined to have good agreement with the correlation coefficient data. The kinetic study concluded that RhB dye adsorption follows with the pseudo-second-order kinetic model. Further, adsorption mechanism of RGO–Ni is proposed which involves three steps. The synthesized adsorbent is compared with the other adsorbents in the literature and indicates that RGO–Ni nanocomposite used in this study shown better results for a particular adsorption capacity than polymeric, natural and synthetic bioadsorbents. The regeneration and reusability experiments suggest RGO–Ni nanocomposite can be used for many numbers of times for purification/adsorption. Elsevier 2021-04-22 /pmc/articles/PMC8093476/ /pubmed/33997391 http://dx.doi.org/10.1016/j.heliyon.2021.e06851 Text en © 2021 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Research Article Jinendra, Usha Bilehal, Dinesh Nagabhushana, B.M. Kumar, Avvaru Praveen Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite |
title | Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite |
title_full | Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite |
title_fullStr | Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite |
title_full_unstemmed | Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite |
title_short | Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite |
title_sort | adsorptive removal of rhodamine b dye from aqueous solution by using graphene–based nickel nanocomposite |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8093476/ https://www.ncbi.nlm.nih.gov/pubmed/33997391 http://dx.doi.org/10.1016/j.heliyon.2021.e06851 |
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