Morphology and crystalline phase-controllable synthesis of TiO2 and their morphology-dependent photocatalytic properties

In this paper, TiO2 nanomaterials were prepared by using a simple procedure without any complex apparatus. The products were well-dispersed uniformly and their shape, size and crystalline phase could be controlled. With increasing pH, the morphology of TiO2 transformed from particle to rod-like and then to bowknot-like and the crystalline phase of TiO2 changed from anatase to brookite. Finally, phenol was used as degradation model for testing the photocatalytical activity of TiO2 with different morphologies. (C) 2009 Elsevier B.V. All rights reserved.