Fabrication and the photocatalytic evaluating method of TiO2 nanomaterials by methelyne blue and telephthalic acid

  • Lê Thị Ngọc Tú
  • Vũ Thị Hạnh Thu

Abstract

This paper describes a method of fabrication and photocatalytic characterization of TÌO2 nanostructures such as powders, tubes and films. The TÌO2 nanotubes and films were fabricated by hydrothermal method from commercial powders and DC magnetron sputtering. In this study, the terephthalic acid (AT) solution was used as a "probe" fluorescence and Methylene Blue (MB) solution as a colour indicator to indentify the generation of ‘OH hydroxyl and superoxide o^' radicals in photocatalytic reaction. It shows that the method based on MB and AT solutions is of high reliability, suitable for preparation of TÌO2 powders, tubes and films. With 25 mg TÌO2 nanostmctures, the photocatalytic properties of nanotubes are better than those of the films and precursor powders.

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Published
2017-09-07
Section
Articles