Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives

Barium titanat (BaTiO3) dan barium nikel titanat (Ba2NiTi5O13) telah disintesis melalui kaedah sol-gel. Mekanisma pembentukan BaTiO3 dan Ba2NiTi5O13 telah dicadangkan. Kesan pengedopan natrium (Na) pada komposisi struktur dan morfologi permukaan bagi 3 oksida berasas titanium iaitu titanium dioks...

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Main Author:	Chew, Ker Yin
Format:	Thesis
Language:	English
Published:	2016
Subjects:	QD1-999 Chemistry
Online Access:	http://eprints.usm.my/32027/1/CHEW_KER_YIN_24%28NN%29.pdf
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id	my-usm-ep.32027
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spelling	my-usm-ep.320272019-04-12T05:25:27Z Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives 2016-01 Chew, Ker Yin QD1-999 Chemistry Barium titanat (BaTiO3) dan barium nikel titanat (Ba2NiTi5O13) telah disintesis melalui kaedah sol-gel. Mekanisma pembentukan BaTiO3 dan Ba2NiTi5O13 telah dicadangkan. Kesan pengedopan natrium (Na) pada komposisi struktur dan morfologi permukaan bagi 3 oksida berasas titanium iaitu titanium dioksida (TiO2), BaTiO3 and Ba2NiTi5O13 telah dikaji. Struktur-struktur fasa TiO2, BaTiO3 dan Ba2NiTi5O13 iaitu anatase, kubik dan monoklinik, masing-masing dikekalkan selepas pengedopan Na. Ini menunjukkan bahawa penggantian atom Na pada atom Ti adalah satu fenomena permukaan. Transformasi morfologi zarah-zarah pengedop-Na BaTiO3 telah diperhatikan. Penunjuk Hammett menunjukkan bahawa pengedop-Na Ba2NiTi5O13 mempunyai kebesan yang tertinggi. Daripada hasil analisa BET, pengedop-Na Ba2NiTi5O13 menunjukkan luas permukaan spesifik yang tertinggi berbanding dengan pengedop-Na BaTiO3 dan pengedop-Na TiO2. Aplikasi oksida berasas titanium tersebut sebagai pengisi dalam polivinil alkohol (PVA) telah dikaji. Barium titanate (BaTiO3) and barium nickel titanate (Ba2NiTi5O13) were synthesized via sol-gel method. Mechanism of formation of BaTiO3 and Ba2NiTi5O13 was proposed. The effect of Na doping on structural composition and surface morphology of 3 titanium-based oxides (i.e. titanium dioxide (TiO2), BaTiO3 and Ba2NiTi5O13) were investigated. The phase structures of TiO2, BaTiO3 and Ba2NiTi5O13 i.e. anatase, cubic and monoclinic respectively were sustained after Na doping. This indicates that the substitution of Na on Ti atom was a surface phenomenon. The morphology transformation of Na-doped BaTiO3 particles was observed. Hammett indicator showed that the Na-doped Ba2NiTi5O13 has the highest basicity. From BET result, the Na-doped Ba2NiTi5O13 showed the largest specific surface area as compared to Na-doped BaTiO3 and Na-doped TiO2. The application of these titanium-based oxides as the fillers in polyvinyl alcohol (PVA) was investigated. 2016-01 Thesis http://eprints.usm.my/32027/ http://eprints.usm.my/32027/1/CHEW_KER_YIN_24%28NN%29.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Sains Kimia (School of Chemical Sciences)
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QD1-999 Chemistry
spellingShingle	QD1-999 Chemistry Chew, Ker Yin Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives
description	Barium titanat (BaTiO3) dan barium nikel titanat (Ba2NiTi5O13) telah disintesis melalui kaedah sol-gel. Mekanisma pembentukan BaTiO3 dan Ba2NiTi5O13 telah dicadangkan. Kesan pengedopan natrium (Na) pada komposisi struktur dan morfologi permukaan bagi 3 oksida berasas titanium iaitu titanium dioksida (TiO2), BaTiO3 and Ba2NiTi5O13 telah dikaji. Struktur-struktur fasa TiO2, BaTiO3 dan Ba2NiTi5O13 iaitu anatase, kubik dan monoklinik, masing-masing dikekalkan selepas pengedopan Na. Ini menunjukkan bahawa penggantian atom Na pada atom Ti adalah satu fenomena permukaan. Transformasi morfologi zarah-zarah pengedop-Na BaTiO3 telah diperhatikan. Penunjuk Hammett menunjukkan bahawa pengedop-Na Ba2NiTi5O13 mempunyai kebesan yang tertinggi. Daripada hasil analisa BET, pengedop-Na Ba2NiTi5O13 menunjukkan luas permukaan spesifik yang tertinggi berbanding dengan pengedop-Na BaTiO3 dan pengedop-Na TiO2. Aplikasi oksida berasas titanium tersebut sebagai pengisi dalam polivinil alkohol (PVA) telah dikaji. Barium titanate (BaTiO3) and barium nickel titanate (Ba2NiTi5O13) were synthesized via sol-gel method. Mechanism of formation of BaTiO3 and Ba2NiTi5O13 was proposed. The effect of Na doping on structural composition and surface morphology of 3 titanium-based oxides (i.e. titanium dioxide (TiO2), BaTiO3 and Ba2NiTi5O13) were investigated. The phase structures of TiO2, BaTiO3 and Ba2NiTi5O13 i.e. anatase, cubic and monoclinic respectively were sustained after Na doping. This indicates that the substitution of Na on Ti atom was a surface phenomenon. The morphology transformation of Na-doped BaTiO3 particles was observed. Hammett indicator showed that the Na-doped Ba2NiTi5O13 has the highest basicity. From BET result, the Na-doped Ba2NiTi5O13 showed the largest specific surface area as compared to Na-doped BaTiO3 and Na-doped TiO2. The application of these titanium-based oxides as the fillers in polyvinyl alcohol (PVA) was investigated.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Chew, Ker Yin
author_facet	Chew, Ker Yin
author_sort	Chew, Ker Yin
title	Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives
title_short	Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives
title_full	Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives
title_fullStr	Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives
title_full_unstemmed	Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives
title_sort	synthesis, optical, electrical and catalytic properties of titanium-based oxides materials and their sodium-doped derivatives
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kimia (School of Chemical Sciences)
publishDate	2016
url	http://eprints.usm.my/32027/1/CHEW_KER_YIN_24%28NN%29.pdf
_version_	1747820517887311872

Synthesis, Optical, Electrical And Catalytic Properties Of Titanium-Based Oxides Materials And Their Sodium-Doped Derivatives

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