Electrophoretically deposited TiO2 thin films for photocatalytic oxidation of phenol

Gatimu WN, Aduda BO, Nyongesa FW. "Electrophoretically deposited TiO2 thin films for photocatalytic oxidation of phenol.". In: The 6th Edward Bouchet-Abdus Salam Institute International Conference, iThemba LABS. Cape Town, South Africa ; 2007.


In this study, electrophoretic deposition (EPD) technique was used to deposit TiO2 thin film on a conducting glass substrate for use in water purification from organic contaminants. The optimum deposition parameters of a good quality film in terms of adherence to the substrate, homogeneity of the film and the extent of microcracking upon drying were: ethanol for obtaining a stable suspension, a pH of 3 for best stability of the suspension and the speed of coating, TiO2 loading concentration of 4 wt %; 0.3wt% iodine dispersant with respect to TiO2 concentration, an applied voltage of 25 volts, and films’ sintering temperature of 573 K for highest photocatalytic activity. The quantitative analysis of phenol by bromination method was used to determine photocatalytic decomposition of phenol in water.

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