Synthesis and enhanced photocatalytic activity of Mn/TiO2 mesoporous materials using the impregnation method through CVC process

Abstract

TiO2 particles were prepared by chemical vapor condensation and used to synthesize MnOx/TiO2 mesoporous materials by impregnation. The Mn-doped TiO2 particles were smaller (8.5 nm vs. 10.5 nm) and had greater surface areas (203.7 m(2) g(-1) vs. 134.4 m(2) g(-1)) than undoped particles. They were also smaller and had a greater surface area than similarly doped commercial P25, indicating highly dispersed Mn species on the surfaces of the crystalline TiO2. The resulting materials' photocatalytic activities towards methylene blue decomposition were compared: the synthesized TiO2 particles with MnO2 showed higher photocatalytic activity than the similarly doped commercial P25.