Study on photocatalytic activity of ZnO-Zn<sub>2</sub>TiO<sub>4</sub> for the ceramic glaze

Due to the high sintering temperature of traditional ceramics, most photocatalytic substances in the ceramic glaze will lose efficacy. In this study, the photocatalyst of ZnO-Zn2TiO4 were synthesized by the sol-hydrothermal method and sintered at 1300 ℃. The photocatalytic activity of ZnO-Zn2TiO4 was tested by the degradation of methylene blue (MB) under sunlight irradiation at room temperature. Then, selecting the best catalytic effect of ZnO-Zn2TiO4 was mixed with the ceramic glaze and sintered at 1300 ℃, which was also tested by the degradation of MB. The results showed that when the ZnO-Zn2TiO4 was the molar ratio of Ti:Zn = 1:8 and added into the ceramic glaze with 15% mass percentage after sintering 1300 ℃, it exhibited superior photocatalytic efficiency in degrading MB. This study presents a novel approach for preparing high-temperature (1300 ℃) glazes with enhanced photocatalytic properties.