Structure, Surface Properties and Photocatalytic Activity of TiO2 Nanoparticles

Abstract

Abstract: TiO₂ nanoparticles were prepared by the hydrolysis of titanium alkoxide. The properties of the particles were characterized by XRD, SPS, XPS and ESR techniques.
The particle size of the TiO₂ increased as the calcining temperature increased and the structure of the TiO₂ changed from anatase to rutile. The photocatalytic
oxidation of heptane was used as model reaction to measure the photocatalytic activity of TiO₂particles. The photocatalytic activity of TiO₂ particles
washed with ethanol is higher than that of TiO₂ particles washed with water. The lower calcining temperature induces the blue-shift of photovoltage, the
threshold higher, and the content of Ti³⁺ higher, which help to enhance the photocatalytic activity of TiO₂ particles.

Key words: titanium dioxide, heptane, surface properties, photocatalytic activity

CLC Number:

TF123

SHANG Jing,XU Zi-Li,DU Yao-Guo,LI Jing-Min. Structure, Surface Properties and Photocatalytic Activity of TiO₂ Nanoparticles[J]. Journal of Inorganic Materials.

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Structure, Surface Properties and Photocatalytic Activity of TiO₂ Nanoparticles

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