Sintering temperature effect on photocatalytic efficiencies of ZnO/TiO2 composite plates

► We prepared self-supporting ZnO-TiO2 photocatalyst composite plates by tape casting. ► Relatively low sintering temperature range (600-700 °C) was selected. ► Decreasing sintering temperature suppresses the formation of Zn2TiO4 and Zn2Ti3O8. ► The plates have relatively high surface areas and are efficient in degradation. ► RR180 dye molecules in water were successfully decomposed under UVA irradiation.