A One-Step Approach to the Synthesis of ZrO2-Modified TiO2 Nanotubes in Supercritical Carbon Dioxide

Authors

  • Rahima A. Lucky,

    1. Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario, N6A 5B9 (Canada)
    Search for more papers by this author
  • Paul A. Charpentier

    Corresponding author
    1. Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario, N6A 5B9 (Canada)
    • Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario, N6A 5B9 (Canada).
    Search for more papers by this author

  • We would like to thank Nancy Bell from the UWO Nanotechnology Centre for the SEM, Ronald Smith from the Biology Department, UWO, for his assistance on TEM, Alexandre Aubin for the powder XRD, Mark Biesinger for XPS, and Becky Jacklin for FTIR spectroscopy analysis. This work was financially supported by the Canadian Natural Science and Engineering Research Council (NSERC), the Materials and Manufacturing Ontario Emerging Materials program (MMO-EMK), and the Canadian Foundation for Innovation (CFI).

Abstract

original image

Zr-TiO2 nanotubes are synthesized viaa new surfactant-free sol-gel route in supercritical CO2. The morphology of the Zr-TiO2 nanotubes can be tailored by changing either the concentration of the starting materials or the acid-to-metal-alkoxide ratio. This synthesis procedure is simple and scaleable, using mild reaction conditions and a green solvent, and provides a high yield and high-quality nanotubes (see figure).

Ancillary