Effect of spinning rate and sintering temperature of TiO2 sol-gel via spin coating

Tan, Jun Hao (2018) Effect of spinning rate and sintering temperature of TiO2 sol-gel via spin coating. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

In these few decades, Titanium Dioxide (TiO2) exist as an important topic that being studied. This is due to its benefits that brought to the society. Furthermore, there are several functions which is beneficial to the current science and technology industry. For instance, the self-cleaning function of TiO2 when coated in a substrate. TiO2 can be classified into three different crystalline phase which are rutile, anatase and brookite. In this study, researcher will focus on the study of TiO2 in brookite phase. The uniqueness of TiO2 in brookite phase is about the photocatalysis ability after being coated in the surface of the substrate. Brookite TiO2 is able to carry out photocatalytic activities under visible light while anatase TiO2 perform a better photocatalytic activity under UV light. The technique used to coat the substrate is using sol-gel via spin coating. Spin coating is a suitable method to coat TiO2 onto a substrate because it can produce flat and thin layer of coating. Characterization method used to analyse the effect of specimen are using Scanning Electron Microscope (SEM) to analyse the morphology while using X-Ray Diffraction (XRD) to analyse the crystalline phase. Researcher found that the higher the spinning rate during spin coating process will produce a thinner cross section thickness of TiO2 sol-gel thin film. Beside this, the sintering temperature used for this experiment is not sufficient to change the crystalline phase of the TiO2. The surface morphology of the TiO2 thin film is uniform and denser due to the catalyst used in this experiment when synthesizing TiO2 sol-gel. Researcher suggest that to set a higher temperature to observe the effect of sintering temperature on coating surface quality in the future research.

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