Raman Spectroscopy and XRD investigation on TiO₂ sol-gel dip coating thin films synthesizes with and without solvents

Faculty of Engineering Technology, Universiti Teknikal Malaysia Melaka,, 76100 Durian Tunggal, Melaka, Malaysia.

^* Corresponding author: zmr@utem.edu.my

Abstract

TiO₂ coating films were prepared by sol-gel dip coating method using TTiP precursors with and without ethanol as a medium to hydrolyze the HCl catalyst. The prepared samples of titanium dioxide (TiO₂) coating were dried at 110°C for 30 minutes then heated at 500°C and 600°C for 1h and 3h respectively to study effect of annealing temperature and soaking time. The crystallinity of the TiO₂ coating were identified by using X-ray Diffraction technique and crystallite size was calculated. Raman Spectroscopy also used as the confirmation of phases formation of TiO₂ coating films. Crystallite size of TiO₂ films were obtained at 12.35 nm, 17.29 nm for anatase, 21.71 nm, 28.95 nm for rutile and 2.19 nm for brookite. Thus, the establishment of the desired phases, crystallinity and grain size of TiO₂ thin films sol-gel can be controlled and encouraging to explore as an effort toward producing a sustainable photocatalytic.