Solvothermal Synthesis of Mesoporous TiO_2 Spheres with Controllable Pore Size

We report a facile template-free method to fabricate monodisperse mesoporous TiO2 spheres using microporous titanium glycolates(TG) as precursor.By solvothermal treatment,microporous TG can be directly converted into mesoporous TiO2 spheres via in-situ hydrolysis.The products were characterized by XRD,SEM,TEM,FTIR and nitrogen absorption.The results show that the products exhibit high crystallinity,uniform morphology and tunable pore size.These integrated features would make the as-obtained mesoporous TiO2 materials have attractive applications in areas of environmental purification,energy conversion and storage.