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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主要作者: Sulaiman, Nur Nadira
格式: Thesis
語言:English
出版: 2015
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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
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