Preparation of Ag-TiO2 hollow structures with enhanced photocatalytic activity

This paper describes a one-pot surfactant-assisted hydrothermal method for the synthesis of Ag-TiO2 composite hollow structures with high photocatalytic activity. TEM measurement reveals that the sample is composed of hollow spheres and their tube-like aggregates. The surfactant cetyltrimethylammonium bromide (CTAB) plays a key role in the construction of the Ag-TiO2 hollow structures. The Ag-TiO2 hollow structures showed effective photocatalytic activity for the decomposition of methyl orange. (C) 2010 Elsevier B.V. All rights reserved.