Preparation of Large-Pore Mesoporous Nanocrystalline TiO_2 Thin Films with Tailored Pore Diameters

摘要

A novel and facile synthesis route to large-pore mesoporous nanocrystalline anatase thin films with tunable pore diameters in narrow distribution of sizes ranging from 8.3 to 14 nm is reported,using triblock copolymer as the template and Ti(OBu~n)_4 as the inorganic precursor.The obtained materials were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and nitrogen adsorption.A reasonable formation mechanism is also presented in this work.