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Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution

The silica nanocapsules (SiNC) with CTAB (SiNC-CTAB) and free CTAB (SiNC-FREE) were prepared by the microemulsion polymerization process, in which the cetyltrimethylammonium bromide (CTAB) was used as a structure directive as well as a cationic functionalized agent. The structure and properties of t...

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Main Authors: Saman, Norasikin, Ahmad Kamal, Norfadhilah Aiman, Lye, Jimmy Wei Ping, Mat, Hanapi
Format: Article
Published: Elsevier B.V. 2020
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/93928/
http://dx.doi.org/10.1016/j.apt.2020.06.007
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spelling my.utm.939282022-02-28T13:18:33Z http://eprints.utm.my/id/eprint/93928/ Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution Saman, Norasikin Ahmad Kamal, Norfadhilah Aiman Lye, Jimmy Wei Ping Mat, Hanapi TP Chemical technology The silica nanocapsules (SiNC) with CTAB (SiNC-CTAB) and free CTAB (SiNC-FREE) were prepared by the microemulsion polymerization process, in which the cetyltrimethylammonium bromide (CTAB) was used as a structure directive as well as a cationic functionalized agent. The structure and properties of these adsorbents were characterized by a field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), nitrogen adsorption–desorption (NAD) analyzer, Fourier transform infrared (FTIR) spectrophotometer, thermogravimetric analyzer (TGA) and pH at point zero charges (pHpzc) determination. The adsorbents were then characterized for their adsorption behavior towards Pd(II) ions in aqueous solution performed in a batch adsorption experiment. The maximum adsorption capacity of Pd(II) ions onto SiNC-CTAB obtained from the adsorption isotherm was 124.50 mg g-1, which was over 2.4 times higher than that of the SiNC-FREE (51.28 mg g-1). The diffusion modeling analysis by the Weber Morris model indicated that the film diffusion is the controlling step, while the chemical reaction modeling obeyed the pseudo-second order kinetic model. The SiNC-CTAB was found to be reusable in which a good adsorption performance of up to 4 adsorption cycles was observed. Elsevier B.V. 2020 Article PeerReviewed Saman, Norasikin and Ahmad Kamal, Norfadhilah Aiman and Lye, Jimmy Wei Ping and Mat, Hanapi (2020) Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution. Advanced Powder Technology, 31 (8). pp. 3205-3214. ISSN 0921-8831 http://dx.doi.org/10.1016/j.apt.2020.06.007
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Saman, Norasikin
Ahmad Kamal, Norfadhilah Aiman
Lye, Jimmy Wei Ping
Mat, Hanapi
Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution
description The silica nanocapsules (SiNC) with CTAB (SiNC-CTAB) and free CTAB (SiNC-FREE) were prepared by the microemulsion polymerization process, in which the cetyltrimethylammonium bromide (CTAB) was used as a structure directive as well as a cationic functionalized agent. The structure and properties of these adsorbents were characterized by a field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), nitrogen adsorption–desorption (NAD) analyzer, Fourier transform infrared (FTIR) spectrophotometer, thermogravimetric analyzer (TGA) and pH at point zero charges (pHpzc) determination. The adsorbents were then characterized for their adsorption behavior towards Pd(II) ions in aqueous solution performed in a batch adsorption experiment. The maximum adsorption capacity of Pd(II) ions onto SiNC-CTAB obtained from the adsorption isotherm was 124.50 mg g-1, which was over 2.4 times higher than that of the SiNC-FREE (51.28 mg g-1). The diffusion modeling analysis by the Weber Morris model indicated that the film diffusion is the controlling step, while the chemical reaction modeling obeyed the pseudo-second order kinetic model. The SiNC-CTAB was found to be reusable in which a good adsorption performance of up to 4 adsorption cycles was observed.
format Article
author Saman, Norasikin
Ahmad Kamal, Norfadhilah Aiman
Lye, Jimmy Wei Ping
Mat, Hanapi
author_facet Saman, Norasikin
Ahmad Kamal, Norfadhilah Aiman
Lye, Jimmy Wei Ping
Mat, Hanapi
author_sort Saman, Norasikin
title Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution
title_short Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution
title_full Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution
title_fullStr Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution
title_full_unstemmed Synthesis and characterization of CTAB-silica nanocapsules and its adsorption behavior towards Pd(II) ions in aqueous solution
title_sort synthesis and characterization of ctab-silica nanocapsules and its adsorption behavior towards pd(ii) ions in aqueous solution
publisher Elsevier B.V.
publishDate 2020
url http://eprints.utm.my/id/eprint/93928/
http://dx.doi.org/10.1016/j.apt.2020.06.007
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score 13.223943

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