A simple route for the synthesis of mesostructured lamellar and hexagonal phosphorus-free titania (TiO2)

A new synthetic approach to generate mesostructured phosphorus-free titania is reported. Mesostructured hexagonal and lamellar titania were prepared b y using the:cationic surfactant C(16)TMA(+) and soluble peroxytitanates in the presence of Na+ and TMA(+), respectively. Moreover, upon hydrothermal p ostsynthesis, the lamellar mesophase can be converted to the hexagonal meso phase in the presence of Na+ in the liquid phase. In contrast, the lamellar structure is stable and improves under similar conditions when Na+ is repl aced by TMA(+).