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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 465Fabrication and Visible Response of Au-TiO2 (P25)...

Fabrication and Visible Response of Au-TiO₂ (P25) Composite Photocatalyst with Obvious Surface Plasmon Resonance Effect

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Abstract:

Au-TiO₂ composite photocatalysis material was fabricated by the photodeposition method. The SEM and TEM images demonstrate that Au-TiO₂ NPs are with inerratic geometry and their diameters are in the range of 10 nm to 20 nm. The UV-vis spectra shows the strong peaks in 200-400 nm and near 550 nm which are attributed to the characteristic absorption peak of TiO₂ and the strong surface-plasmon-resonance of Au NPs, respectively. Under visible light irradiation, the phenol degradation dynamics constant on Au-TiO₂ was 0.008 min-1 which was 4 times of that on Degussa P25. The effects of Au amount on the photocatalytic capability of Au-TiO₂ were also investigated.

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Advanced in Nanoscience and Technology

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Periodical:

Advanced Materials Research (Volume 465)

Pages:

215-219

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.465.215

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Online since:

February 2012

Authors:

Ying Liu, Hong Tao Yu, Xie Quan

Keywords:

Au, Photocatalysis, Surface Plasmon Resonance Effect, TiO₂, Visible Light

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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