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Citation: TIAN Bao-Zhu, TONG Tian-Zhong, CHEN Feng, ZHANG Jin-Long. Effect of Water Washing Treatment on the Photocatalytic Activity of Au/TiO₂ Catalysts[J]. Acta Physico-Chimica Sinica, ;2007, 23(07): 978-982. doi: 10.1016/S1872-1508(07)60052-7 shu

Effect of Water Washing Treatment on the Photocatalytic Activity of Au/TiO₂ Catalysts

1.
Laboratory for Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P. R. China

Received Date: 22 January 2007
Available Online: 8 May 2007

Using Au(S2O3)3-2 as the ld precursor, Au/TiO2 photocatalysts were prepared by water washing (W) and rotary evaporation (E) processes, respectively. The samples were characterized by UV-Vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and atomic absorption flame emission spectroscopy (AAS). The photocatalytic activity of the samples was evaluated from the analysis of the photodegradation of methyl orange. Using the water washing treatment, well dispersed ld nanoparticles with the diameter of 2 -5 nm were formed on the surface of TiO2, whereas only the ld coating was formed for rotary evaporation processes. The photocatalytic activity of Au/TiO2 photocatalysts is related to the preparation process. With a similar ld loading, the photocatalysts prepared by water washing showed higher photocatalytic activity compared to the catalysts prepared by rotary evaporation.
- Au/TiO2; Photocatalytic activity; Au loading; Water washing; Rotary evaporateion
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沈阳化工大学材料科学与工程学院沈阳 110142

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Effect of Water Washing Treatment on the Photocatalytic Activity of Au/TiO2 Catalysts

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通讯作者: 陈斌, bchen63@163.com

Effect of Water Washing Treatment on the Photocatalytic Activity of Au/TiO₂ Catalysts