Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles
In this study, polyethyleneimine-coated silica nanoparticles (PEI-SiNP) were used to prepare a polymeric material that can effectively and selectively adsorb Au (III) from aqueous solutions. For this purpose, silica nanoparticles were firstly reacted with (3-glycidyloxypropyl)trimethoxysilane (GPTM...
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2020-10-01
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doaj-742fe3b2da6042e68570668fd6ce51bd2020-11-25T04:04:07ZengTurkish Chemical SocietyJournal of the Turkish Chemical Society, Section A: Chemistry2149-01202020-10-0173883892 Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles Aslı BEYLER ÇİĞİL0https://orcid.org/0000-0003-4353-4224AMASYA ÜNİVERSİTESİ, AMASYA TEKNİK BİLİMLER MESLEK YÜKSEKOKULU In this study, polyethyleneimine-coated silica nanoparticles (PEI-SiNP) were used to prepare a polymeric material that can effectively and selectively adsorb Au (III) from aqueous solutions. For this purpose, silica nanoparticles were firstly reacted with (3-glycidyloxypropyl)trimethoxysilane (GPTMS) to achieve epoxy functionality. The structures of the silica nanoparticles (SiNP), silica nanoparticles with epoxy functionality (E-SiNP) and polyethyleneimine-coated silica nanoparticles were determined using ATR-FTIR (Attenuated Total Reflectance Fourier Transform Infrared) and XPS (X-Ray Photoelectron Spectroscopy), while their thermal properties were characterized using thermogravimetric analyses (TGA). The Au (III) ion-binding capacity of the PEI-SiNP adsorbent nanocomposite that contain high levels of imine was investigated. The effects of the interactions between pH, contact time and foreign metal ions on adsorption were tested to determine the optimum conditions. The optimum contact time was 3 hours at pH 2. The adsorption capacity of the adsorbent nanocomposite prepared for Au (III) was found to be 116.27 mg/g. The Langmuir and Freundlich isotherms were used to determine the adsorption behaviors and the Langmuir isotherm model was selected as the best fit model (R2: 0.997). The prepared PEI-SiNP adsorbent nanocomposite showed a high selectivity for the Au (III) metal even when different metal cations such as Cu (II), Cd (II) and Pb (II) were present. https://dergipark.org.tr/tr/pub/jotcsa/issue/55312/788852au (iii)epoxy functionalitypolyethylene iminesilica nanoparticles |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aslı BEYLER ÇİĞİL |
spellingShingle |
Aslı BEYLER ÇİĞİL Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles Journal of the Turkish Chemical Society, Section A: Chemistry au (iii) epoxy functionality polyethylene imine silica nanoparticles |
author_facet |
Aslı BEYLER ÇİĞİL |
author_sort |
Aslı BEYLER ÇİĞİL |
title |
Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles |
title_short |
Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles |
title_full |
Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles |
title_fullStr |
Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles |
title_full_unstemmed |
Preparation, Characterization and Adsorption into Aqueous Solutions of Polyethyleneimine-Coated Silica Nanoparticles |
title_sort |
preparation, characterization and adsorption into aqueous solutions of polyethyleneimine-coated silica nanoparticles |
publisher |
Turkish Chemical Society |
series |
Journal of the Turkish Chemical Society, Section A: Chemistry |
issn |
2149-0120 |
publishDate |
2020-10-01 |
description |
In this study, polyethyleneimine-coated silica nanoparticles (PEI-SiNP) were used to prepare a polymeric material that can effectively and selectively adsorb Au (III) from aqueous solutions. For this purpose, silica nanoparticles were firstly reacted with (3-glycidyloxypropyl)trimethoxysilane (GPTMS) to achieve epoxy functionality. The structures of the silica nanoparticles (SiNP), silica nanoparticles with epoxy functionality (E-SiNP) and polyethyleneimine-coated silica nanoparticles were determined using ATR-FTIR (Attenuated Total Reflectance Fourier Transform Infrared) and XPS (X-Ray Photoelectron Spectroscopy), while their thermal properties were characterized using thermogravimetric analyses (TGA). The Au (III) ion-binding capacity of the PEI-SiNP adsorbent nanocomposite that contain high levels of imine was investigated. The effects of the interactions between pH, contact time and foreign metal ions on adsorption were tested to determine the optimum conditions. The optimum contact time was 3 hours at pH 2. The adsorption capacity of the adsorbent nanocomposite prepared for Au (III) was found to be 116.27 mg/g. The Langmuir and Freundlich isotherms were used to determine the adsorption behaviors and the Langmuir isotherm model was selected as the best fit model (R2: 0.997). The prepared PEI-SiNP adsorbent nanocomposite showed a high selectivity for the Au (III) metal even when different metal cations such as Cu (II), Cd (II) and Pb (II) were present. |
topic |
au (iii) epoxy functionality polyethylene imine silica nanoparticles |
url |
https://dergipark.org.tr/tr/pub/jotcsa/issue/55312/788852 |
work_keys_str_mv |
AT aslıbeylercigil preparationcharacterizationandadsorptionintoaqueoussolutionsofpolyethyleneiminecoatedsilicananoparticles |
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1724437755988017152 |