Fabrication and Visible Response of Au-TiO2 (P25) Composite Photocatalyst with Obvious Surface Plasmon Resonance Effect
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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.
2011 ◽
Vol 158
(3)
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pp. J53
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2021 ◽
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2018 ◽
Vol 121
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pp. 19-26
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