Influence of TiO2 Content on the Photocatalytic Activity of TiO2 B2O3 Glasses Prepared by the Sol gel Process

Akkuş, Sıtkı Can
Kalem, Volkan
Park, Jongee
Öztürk, Abdullah
A series of binary (1-x)TiO2 xB2O3 glasses with TiO2 content up to 80 mol% were prepared by the sol-gel technique using titanium tetraisopropoxide (C12H28O4Ti) and boric acid (H3BO3) precursors. Effects of initial precursor amount, and calcination temperature and time on the formation and photocatalytic properties of the glasses were investigated. The optimum amount of TiO2 was researched to get a glass possessing self-cleaning ability. The photocatalytic performance of the glasses was evaluated by the decomposition of methylene blue (MB) solution under UV irradiation. The MB degradation of the glasses increased as the TiO2 concentration increased. The highest MB degradation of 90.4% occurred for sample 80T after exposing the sample to UV illumination for 90 min. Glasses were characterized by thermal analyses (TGA and DTA), X-ray diffraction (XRD), and scanning electron microscope (SEM).