A series of {001} facets dominated TiO2 nanosheets with even distributed bulk oxygen vacancies and Ti3+ were synthesized by a simple hydrothermal method at different temperatures. The oxygen vacancy and Ti3+ quantity increased with the hydrothermal temperature from 180 to 240C. The existed oxygen vacancies and Ti3+ significantly improve the visible-light photoactivity, which can be assigned to the enhanced visible light adsorption, ·OH generation ability and reduced photoelectrons and holes recombination rate.

Enhanced Visible-Light Photoactivity of {001} Facets Dominated TiO2 Nanosheets with Even Distributed Bulk Oxygen Vacancy and Ti3+. W.Wang, C.H.Lu, Y.R.Ni, J.B.Song, M.X.Su, Z.Z.Xu: Catalysis Communications, 2012, 22, 19–23