Journal of Materials Science Research and Reviews

Effect of Stabilizer on Structural, Optical and Photocatalytic Properties of Sol-Gel Dip-Coated TiO2 Films

Romy Dwipa Y. Away

Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.

Chika Takai- Yamashita

Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.

Takayuki Ban

Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.

Yutaka Ohya *

Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.

*Author to whom correspondence should be addressed.

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Abstract

Thin films of titanium dioxide (TiO₂) were prepared through sol-gel routes and dip-coating technique, employing titanium isopropoxide (TTIP) in 2-propanol as precursor, and three stabilizing agents i.e. diethanolamine (DEA), lactic acid, and citric acid. The optical properties, crystallinity, and morphology of the samples were evaluated using UV-Visible (UV-Vis) Spectrophotometry analysis, X-Ray Diffraction (XRD) analysis, and Scanning Electron microscope (SEM). Homogeneous crack-free thin films with uniform size were obtained. All the samples showed the formation of anatase phase TiO₂ with no impurities. It was found that TiO₂ with all samples has excellent photocatalytic performance on methylene blue degradation.

Keywords: TiO2, anatase, sol-gel, stabilizer, photocatalyst

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