Preparation of Au/TiO2 and Its Photocatalytic Property Towards Propylene

doi:10.7517/j.issn.1674-0475.2005.01.61

Abstract

Abstract: Au/TiO₂ photocatalyst was prepared by means of dipping method. X-ray electron spectroscopy(XPS)and transmission electron microscop(TEM)were used to characterize the as-prepared Au/TiO₂. The testing results indicated that the average size of deposited Au was 4-6 nm, and that the binding energy of Au 4f_7/2 was located at 83.3 eV, 0.7 eV lower than that of bulk Au (84.0 eV). With photocatalytic oxidation of propylene as model reaction, the photocatalytic property of Au/TiO₂ was measured. The experimental result revealed that the photoactivity of Au/TiO₂ was higher than that of TiO₂, and that the activity of Au/TiO₂ increased as depositing amount of Au increased from 0.1% to 5.0%.

Key words: Au/TiO₂, XPS, photocatalysis, propylene

CLC Number:

O643

MAO Li-qun, FENG Cai-xia, JIN Zhen-sheng, ZHANG Zhi-jun, DANG Hong-xin. Preparation of Au/TiO₂ and Its Photocatalytic Property Towards Propylene[J]. Imaging Science and Photochemistry, 2005, 23(1): 61-65.

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Preparation of Au/TiO₂ and Its Photocatalytic Property Towards Propylene

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