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Keywords:

  • hydrogenation;
  • hydrogen;
  • titanium dioxide;
  • TiO2;
  • photocatalysis

Abstract

Titanium dioxide (TiO2) is an important semiconductor material and photocatalyst with applications in a multitude of fields, including water treatment and solar energy. Recently, hydrogenation has been proposed as an effective processing technique to enhance the visible light absorbance of TiO2, which is typically insensitive to the visible spectrum. In this work, we have elucidated several key synthesis and processing parameters affecting the hydrogenation of TiO2 nanomaterials. Synthesis protocols, hydrogenation temperature and pressure were revealed to be critical parameters in controlling the H2 modification of TiO2 nanoparticles. These findings may contribute to engineering of materials properties of metal oxides through hydrogenation processing. © 2013 Canadian Society for Chemical Engineering