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&...
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2018-11-01
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doaj-b12e48b2aa024e1490676719df878ef62020-11-25T00:55:45ZengMDPI AGNanomaterials2079-49912018-11-0181299210.3390/nano8120992nano8120992Adsorption of Sb (III) on Oxidized Exfoliated Graphite NanoplateletsLuiza Capra0Mihaela Manolache1Ion Ion2Rusandica Stoica3Gabriela Stinga4Sanda Maria Doncea5Elvira Alexandrescu6Raluca Somoghi7Marian Romeo Calin8Ileana Radulescu9Georgeta Ramona Ivan10Marian Deaconu11Alina Catrinel Ion12National Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaFaculty of Applied Chemistry and Material Science, University Politehnica of Bucharest, 313 Splaiul Independentei Street, 060042 Bucharest, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, Romania“Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, Romania“Horia Hulubei” National Institute for Physics and Nuclear Engineering—IFIN HH, 30 Reactorului Street, P.O. Box MG-6, 077125 Bucharest-Magurele, Romania“Horia Hulubei” National Institute for Physics and Nuclear Engineering—IFIN HH, 30 Reactorului Street, P.O. Box MG-6, 077125 Bucharest-Magurele, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaNational Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, RomaniaFaculty of Applied Chemistry and Material Science, University Politehnica of Bucharest, 313 Splaiul Independentei Street, 060042 Bucharest, RomaniaIn 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<sup>−1</sup> at pH = 7.0, 1.0 mg ox-xGnP/100 mL solution, T = 293 K, 1.0 mg L<sup>−1</sup>, Sb (III), 25 min contact time. The best correlation of the kinetic data was described by a pseudo-first-order kinetic model, with R<sup>2</sup> = 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.https://www.mdpi.com/2079-4991/8/12/992Sb(III)adsorptionoxidized exfoliated graphite nanoplatelets |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Luiza Capra Mihaela Manolache Ion Ion Rusandica Stoica Gabriela Stinga Sanda Maria Doncea Elvira Alexandrescu Raluca Somoghi Marian Romeo Calin Ileana Radulescu Georgeta Ramona Ivan Marian Deaconu Alina Catrinel Ion |
spellingShingle |
Luiza Capra Mihaela Manolache Ion Ion Rusandica Stoica Gabriela Stinga Sanda Maria Doncea Elvira Alexandrescu Raluca Somoghi Marian Romeo Calin Ileana Radulescu Georgeta Ramona Ivan Marian Deaconu Alina Catrinel Ion Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets Nanomaterials Sb(III) adsorption oxidized exfoliated graphite nanoplatelets |
author_facet |
Luiza Capra Mihaela Manolache Ion Ion Rusandica Stoica Gabriela Stinga Sanda Maria Doncea Elvira Alexandrescu Raluca Somoghi Marian Romeo Calin Ileana Radulescu Georgeta Ramona Ivan Marian Deaconu Alina Catrinel Ion |
author_sort |
Luiza Capra |
title |
Adsorption of Sb (III) on Oxidized Exfoliated Graphite Nanoplatelets |
title_short |
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_sort |
adsorption of sb (iii) on oxidized exfoliated graphite nanoplatelets |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2018-11-01 |
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<sup>−1</sup> at pH = 7.0, 1.0 mg ox-xGnP/100 mL solution, T = 293 K, 1.0 mg L<sup>−1</sup>, Sb (III), 25 min contact time. The best correlation of the kinetic data was described by a pseudo-first-order kinetic model, with R<sup>2</sup> = 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. |
topic |
Sb(III) adsorption oxidized exfoliated graphite nanoplatelets |
url |
https://www.mdpi.com/2079-4991/8/12/992 |
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