Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite

This research is to correlate physicochemical properties of metal oxides-ZSM-5 functionalized thiol with their catalytic properties towards adsorption and photocatalytic removal of dimethylarsenic acid (DMA). TiO2 and ZnO were attached on the surface of the ZSM-5 zeolite by impregnation. The impregn...

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Main Author:	Sulaiman, Nur Nadira
Format:	Thesis
Language:	English
Published:	2015
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/53781/24/NurNadiraSulaimanMFS2015.pdf
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spelling	my-utm-ep.537812020-09-02T06:23:25Z Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite 2015-02 Sulaiman, Nur Nadira QD Chemistry This research is to correlate physicochemical properties of metal oxides-ZSM-5 functionalized thiol with their catalytic properties towards adsorption and photocatalytic removal of dimethylarsenic acid (DMA). TiO2 and ZnO were attached on the surface of the ZSM-5 zeolite by impregnation. The impregnation of these metal oxides were carried out on the surface of the ZSM-5 followed by modification of functional group on ZSM-5 surfaces with thiol to form TiO2 impregnated ZSM-5 functionalized with thiol (TiO2-ZSM5-SH) and ZnO impregnated ZSM-5 functionalized with thiol (ZnO-ZSM5-SH). Characterizations by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), diffuse reflectance ultraviolet-visible spectroscopy (DR UV-Vis) and energy dispersive X-ray (EDX) proved that the metal oxides were successfully attached on the surface of the ZSM-5. It was demonstrated that the modification of functional group on ZSM-5 surface with thiol was also successful. Images from high-resolution transmission electron microscope (HRTEM) and scanning electron microscope (SEM) showed TiO2-ZSM5-SH and ZnO-ZSM5-SH appeared as crystalline agglomerated particles. TiO2-ZSM5-SH had shown better performance in the photocatalytic removal of DMA by 49% compared to 41% removal by ZnO-ZSM5-SH. On the contrary, TiO2-ZSM5-SH gave lower percentage in the adsorption of DMA which was 23% as compared to 36% with ZnO-ZSM5-SH. Results showed that TiO2-ZSM5-SH and ZnO-ZSM5-SH possess photocatalytic properties. The percentage removal of DMA had increased to 49% for TiO2-ZSM5-SH and 41% for ZnO-ZSM5-SH compared to the use of bare TiO2 (20%) and ZnO (23%). These proved that thiol functionalization on ZSM-5 enhanced the ability of both materials to remove DMA. 2015-02 Thesis http://eprints.utm.my/id/eprint/53781/ http://eprints.utm.my/id/eprint/53781/24/NurNadiraSulaimanMFS2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85202 masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Sulaiman, Nur Nadira Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite
description	This research is to correlate physicochemical properties of metal oxides-ZSM-5 functionalized thiol with their catalytic properties towards adsorption and photocatalytic removal of dimethylarsenic acid (DMA). TiO2 and ZnO were attached on the surface of the ZSM-5 zeolite by impregnation. The impregnation of these metal oxides were carried out on the surface of the ZSM-5 followed by modification of functional group on ZSM-5 surfaces with thiol to form TiO2 impregnated ZSM-5 functionalized with thiol (TiO2-ZSM5-SH) and ZnO impregnated ZSM-5 functionalized with thiol (ZnO-ZSM5-SH). Characterizations by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), diffuse reflectance ultraviolet-visible spectroscopy (DR UV-Vis) and energy dispersive X-ray (EDX) proved that the metal oxides were successfully attached on the surface of the ZSM-5. It was demonstrated that the modification of functional group on ZSM-5 surface with thiol was also successful. Images from high-resolution transmission electron microscope (HRTEM) and scanning electron microscope (SEM) showed TiO2-ZSM5-SH and ZnO-ZSM5-SH appeared as crystalline agglomerated particles. TiO2-ZSM5-SH had shown better performance in the photocatalytic removal of DMA by 49% compared to 41% removal by ZnO-ZSM5-SH. On the contrary, TiO2-ZSM5-SH gave lower percentage in the adsorption of DMA which was 23% as compared to 36% with ZnO-ZSM5-SH. Results showed that TiO2-ZSM5-SH and ZnO-ZSM5-SH possess photocatalytic properties. The percentage removal of DMA had increased to 49% for TiO2-ZSM5-SH and 41% for ZnO-ZSM5-SH compared to the use of bare TiO2 (20%) and ZnO (23%). These proved that thiol functionalization on ZSM-5 enhanced the ability of both materials to remove DMA.
format	Thesis
qualification_level	Master's degree
author	Sulaiman, Nur Nadira
author_facet	Sulaiman, Nur Nadira
author_sort	Sulaiman, Nur Nadira
title	Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite
title_short	Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite
title_full	Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite
title_fullStr	Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite
title_full_unstemmed	Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite
title_sort	adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized zsm-5 zeolite
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2015
url	http://eprints.utm.my/id/eprint/53781/24/NurNadiraSulaimanMFS2015.pdf
_version_	1747817625807749120

Adsorption and photocatalytic removal of dimethylarsenic acid using titania and zinc oxide thiol functionalized ZSM-5 zeolite

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