The flower-like Bi2O3/TiO2 visible photocatalyst with surface enrichment of Bi2O3 quantum dots was synthesized using a facile solvothermal process, which exhibited much higher activity than the Bi2O3/TiO2-IM prepared by impregnation method and the Bi2O3/TiO2-GR obtained by crushing the flower-like Bi2O3/TiO2. The high activity could be attributed to the enhanced light absorbance via multiple reflections in flower-like structure, the enhanced photosensitizing effect of the surface enriched Bi2O3 quantum dots and the strong interaction between Bi2O3 and TiO2. Moreover, the Bi2O3/TiO2 exhibited strong durability and could be reused for more than 10 times, which could be attributed to the high hydrothermal stability of the flower-like structure and the inhibition of Bi2O3 leaching owing to its strong interaction with TiO2. (C) 2010 Elsevier B.V. All rights reserved,