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Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets

In this work, Sb (III) adsorption on oxidized exfoliated graphite nanoplatelets (ox-xGnP) was evaluated for the first time, to the best of our knowledge. The ox-xGnP were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmet–Teller (BET) a...

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Autores principales: Capra, Luiza, Manolache, Mihaela, Ion, Ion, Stoica, Rusandica, Stinga, Gabriela, Doncea, Sanda Maria, Alexandrescu, Elvira, Somoghi, Raluca, Calin, Marian Romeo, Radulescu, Ileana, Ivan, Georgeta Ramona, Deaconu, Marian, Ion, Alina Catrinel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6315594/
https://www.ncbi.nlm.nih.gov/pubmed/30513681
http://dx.doi.org/10.3390/nano8120992
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author Capra, Luiza
Manolache, Mihaela
Ion, Ion
Stoica, Rusandica
Stinga, Gabriela
Doncea, Sanda Maria
Alexandrescu, Elvira
Somoghi, Raluca
Calin, Marian Romeo
Radulescu, Ileana
Ivan, Georgeta Ramona
Deaconu, Marian
Ion, Alina Catrinel
author_facet Capra, Luiza
Manolache, Mihaela
Ion, Ion
Stoica, Rusandica
Stinga, Gabriela
Doncea, Sanda Maria
Alexandrescu, Elvira
Somoghi, Raluca
Calin, Marian Romeo
Radulescu, Ileana
Ivan, Georgeta Ramona
Deaconu, Marian
Ion, Alina Catrinel
author_sort Capra, Luiza
collection PubMed
description In this work, Sb (III) adsorption on oxidized exfoliated graphite nanoplatelets (ox-xGnP) was evaluated for the first time, to the best of our knowledge. The ox-xGnP were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmet–Teller (BET) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM) equipped with energy-dispersive X-ray spectroscopy (EDX), and Zeta potential analysis. The adsorption parameters, such as pH and contact time, were optimized, and the best adsorption capacity obtained was 8.91 mg g(−1) at pH = 7.0, 1.0 mg ox-xGnP/100 mL solution, T = 293 K, 1.0 mg L(−1), Sb (III), 25 min contact time. The best correlation of the kinetic data was described by a pseudo-first-order kinetic model, with R(2) = 0.999. The adsorption isotherms of Sb (III) onto ox-xGnP were best described by the Langmuir isotherm model. The thermodynamic parameters showed that the adsorption process was exothermic and spontaneous.
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spelling pubmed-63155942019-01-10 Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets Capra, Luiza Manolache, Mihaela Ion, Ion Stoica, Rusandica Stinga, Gabriela Doncea, Sanda Maria Alexandrescu, Elvira Somoghi, Raluca Calin, Marian Romeo Radulescu, Ileana Ivan, Georgeta Ramona Deaconu, Marian Ion, Alina Catrinel Nanomaterials (Basel) Article In this work, Sb (III) adsorption on oxidized exfoliated graphite nanoplatelets (ox-xGnP) was evaluated for the first time, to the best of our knowledge. The ox-xGnP were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmet–Teller (BET) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM) equipped with energy-dispersive X-ray spectroscopy (EDX), and Zeta potential analysis. The adsorption parameters, such as pH and contact time, were optimized, and the best adsorption capacity obtained was 8.91 mg g(−1) at pH = 7.0, 1.0 mg ox-xGnP/100 mL solution, T = 293 K, 1.0 mg L(−1), Sb (III), 25 min contact time. The best correlation of the kinetic data was described by a pseudo-first-order kinetic model, with R(2) = 0.999. The adsorption isotherms of Sb (III) onto ox-xGnP were best described by the Langmuir isotherm model. The thermodynamic parameters showed that the adsorption process was exothermic and spontaneous. MDPI 2018-11-30 /pmc/articles/PMC6315594/ /pubmed/30513681 http://dx.doi.org/10.3390/nano8120992 Text en © 2018 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
Capra, Luiza
Manolache, Mihaela
Ion, Ion
Stoica, Rusandica
Stinga, Gabriela
Doncea, Sanda Maria
Alexandrescu, Elvira
Somoghi, Raluca
Calin, Marian Romeo
Radulescu, Ileana
Ivan, Georgeta Ramona
Deaconu, Marian
Ion, Alina Catrinel
Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets
title Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets
title_full Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets
title_fullStr Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets
title_full_unstemmed Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets
title_short Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets
title_sort adsorption of sb (iii) on oxidized exfoliated graphite nanoplatelets
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6315594/
https://www.ncbi.nlm.nih.gov/pubmed/30513681
http://dx.doi.org/10.3390/nano8120992
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