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Sol-gel synthesis of TiO2 thin films from in-house NanoTiO2 powder

Sahdan, Mohd Zainizan and Nayan, Nafarizal and Dahlan, Samsul Haimi and Mahmou, Mahdi Ezwan and Hashim, Uda Sol-gel synthesis of TiO2 thin films from in-house NanoTiO2 powder. In: World Congress on Engineering and Technology 2012 (CET 2012), 26-29 Oktober 2012, Beijing, China.


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This paper presents the optimization process in sol-gel technique to synthesize Titanium dioxide (TiO2) thin films using in-house Nano-TiO2 powder. Nano-TiO2 powder was previously synthesized in our lab from ilmenite which is a tin mining byproduct using a modified hydrothermal method. By varying the mass of Nano-TiO2 powder and acetic acid (catalyst) concentration in the sol-gel process, highly transparent TiO2 thin films were obtained. The thin films were characterized by field effect scanning electron microscope (FESEM), atomic force microscopy (AFM), thickness profiler, ultra-violet-visible spectrometer (UV-Vis) and current-voltage (I-V) measurement system. This paper also demonstrates the TiO2 thin films are sensitive towards isopropanol (IPA) solution where the I-V response of the thin films changed sharply as IPA was dropped onto the thin film’s surface. The electrical property shows the thin film has potential applications for chemical sensors and solar cells.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: titanium dioxide; ilmenite; sol-gel; tin mining
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electronic Engineering
Depositing User: Ms Aryanti Ahmad
Date Deposited: 11 Dec 2012 07:07
Last Modified: 11 Dec 2012 07:07
URI: http://eprints.uthm.edu.my/id/eprint/3353
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