Synthesis and characterization of mesoporous TiO2 prepared via three different procedures in ethanol medium

Three mesoporous TiO2 samples were successfully synthesized by the modified evaporation induced self-assembly methods and hydrothermal process. All obtained mesoporous TiO2 samples only exhibit the anatase crystalline phase in theirs framework. The mesoporous TiO2 samples prepared by modified evaporation induced method show better mesostructure than that one prepared by hydrothermal process since the evaporation of ethanol and hydrolyzed butanol is conducive to the pre-organization between Ti-sources and surfactant micelles and then forming the stable inorganic–organic interface. The mesostructure appearance can distort the TiO6 octahedrons in the structure of anatase framework and cause the light absorbed peaks shifting to longer wavelengths.

Three mesoporous TiO2 samples were successfully synthesized by modified evaporation induced self-assembly methods and hydrothermal process. SEM results (figure) suggest that microstructure of the samples increase from left to right.Figure optionsDownload as PowerPoint slideHighlights
► Influence of synthesized procedures on the structure of mesoporous TiO2 was studied.
► Flowability and heat-exchange is critical to the construction of mesostructure.
► The mesostructure of TiO2 can distort its framework TiO6 octahedron structure.