Bi2WO6 Nano- and Microstructures: Shape Control and Associated Visible-Light-Driven Photocatalytic Activities

Authors

  • Lisha Zhang,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P.R. China, Fax: (+86) 21-5241-3122
    Search for more papers by this author
  • Wenzhong Wang Prof.,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P.R. China, Fax: (+86) 21-5241-3122
    Search for more papers by this author
  • Lin Zhou,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P.R. China, Fax: (+86) 21-5241-3122
    Search for more papers by this author
  • Haolan Xu

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P.R. China, Fax: (+86) 21-5241-3122
    Search for more papers by this author

Abstract

The shape-controlled synthesis of nano- and microstructured materials has opened up new possibilities to improve their physical and chemical properties. In this work, new types of Bi2WO6 with complex morphologies, namely, flowerlike, tyre- and helixlike, and platelike shapes, have been controllably synthesized by a facile hydrothermal process. The benefits of the present work also stem from the first report on the transformation of Bi2WO6 from three-dimensional (3D) flowerlike superstructures to 2D platelike structures, and on the formation of tyre- and helixlike Bi2WO6 superstructures. UV/Vis absorption spectra show that the optical properties of Bi2WO6 samples are relevant to their size and shape. More importantly, the photocatalytic activities of Bi2WO6 nano- and microstructures are strongly dependent on their shape, size, and structure for the degradation of Rhodamine B (RhB) under visible-light irradiation. The reasons for the differences in the photocatalytic activities of these Bi2WO6 nano- and microstructures are further investigated.

Ancillary