Nanotubes: Tube-in-Tube TiO2 Nanotubes with Porous Walls: Fabrication, Formation Mechanism, and Photocatalytic Properties (Small 4/2011)

Authors

  • Xijin Xu,

    Corresponding author
    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    2. Environmental Futures Centre and Griffith School of Environment, Gold Coast Campus, Griffith University, QLD 4222, Australia
    • International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan.
    Search for more papers by this author
  • Xiaosheng Fang,

    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    Search for more papers by this author
  • Tianyou Zhai,

    Corresponding author
    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    • International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan.
    Search for more papers by this author
  • Haibo Zeng,

    Corresponding author
    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    • International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan.
    Search for more papers by this author
  • Baodan Liu,

    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    Search for more papers by this author
  • Xiaoye Hu,

    1. Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, P.O. Box 1129, Hefei 230031, China
    Search for more papers by this author
  • Yoshio Bando,

    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    Search for more papers by this author
  • Dmitri Golberg

    Corresponding author
    1. International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan
    • International Center for Young Scientists (ICYS) and International, Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 305–0044, Japan.
    Search for more papers by this author

Abstract

original image

The frontispiece image shows SEM images of tube-in-tube (TIT) TiO2 nanostructures with porous walls produced in a single step in HF and DMSO solution. The nanotubes are several micrometers long with an outer diameter of 200 nm. These novel nanostructures show potential for the formation of perpendicularly grown, 1D TiO2 nanotubes with enlarged surface areas due to their porous walls-a clear advantage in photocatalytic and solar energy conversion applications. A study of the mechanism shows that for the formation of the TIT TiO2 nanotubes, the equalfield strength growth and localized dissolution of the formed TiO2 tubular walls dominate the formation of this novel morphology. For more information, please read the Communication “Tube-in-Tube TiO2 Nanotubes with Porous Walls: Fabrication, Formation Mechanism, and Photocatalytic Properties” by X. J. Xu, T. Y. Zhai, D. Golberg, and co-workers, beginning on page on page 444.

Ancillary