关键词: TiO2薄膜;液相沉积;光催化降解;甲基橙

Abstract: TiO2 thin films were prepared on glass slide by liquid phase deposition method.Methyl orange solution was used as the contaminated liquid to test the degradation rate of methyl orange solution by TiO2 thin films.The effects of molar ratio of raw materials for the preparation of TiO2 thin films, induced crystal, deposition temperature, deposition time, heat treatment temperature and illumination time on the degradation rate were tested.The experimental conditions were set to the mole ratio of (NH4)2TiF6 to H3BO3 was 1∶1-1∶6, induction of crystal was 0-0.1 g, deposition temperature was 25-65 ℃, deposition time was 24 h.Experimental results show that the best degradation conditions was that the mole ratio of (NH4)2TiF6 and H3BO3 was 1∶6, induction of crystal was 0.06 g, deposition temperature was 55 ℃, the heat treatment temperature was 550 ℃, appropriate deposition and illumination time.

Key words: TiO2 thin film;liquid phase deposition;photocatalytic degradation;methyl orange