Abstract
Abstract Highly ordered titanium-containing SBA-15(TiSBA-15) materials have been successfully synthesized through co-precipitation synthesis. In order to increase the photocatalytic efficiency and optical usage range of TiSBA-15, modified composites are made by doping with rare-earth metal cerium (Ce) and noble metal platinum (Pt) through photodeposition method respectively. The prepared materials were characterized by ICP-MS, BET, SEM/EDX, TEM and XRD. Their catalytic performances were evaluated for degradation of methylene blue (MB) by UV light and Gamma-ray in a liquid phase. It was observed that the properties of morphology, crystalline structure, and photocatalytic performance would be influenced with various titanium contents. The photocatalytic activity increases with an increasing Ti content. In addition, for modified TiSBA-15 materials with Pt and Ce, the photocatalytic performance of Pt/TiSBA-15 series is better but Ce/TiSBA-15 series is worse than that of unmodified ones by UV light. Nevertheless, we find that the prepared Ce/TiSBA-15 can be activated under Gamma-ray irradiation to photocatalytically decompose the MB.