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Citation: HU Yuan-Fang, LI Yue-Xiang, PENG Shao-Qin, LV ng-Xuan, LI Shu-Ben. Photocatalytic Properties of Composite of SiO₂ and Pt-Cd_0.53Zn_0.47S Solid Solutions[J]. Acta Physico-Chimica Sinica, ;2008, 24(11): 2071-2076. doi: 10.3866/PKU.WHXB20081123 shu

Photocatalytic Properties of Composite of SiO₂ and Pt-Cd_0.53Zn_0.47S Solid Solutions

1.
Department of Chemistry, Nanchang University, Nanchang 330031, P. R. China; State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China

Received Date: 4 May 2008
Available Online: 26 September 2008

Cd0.53Zn0.47S was prepared by a coprecipitation method. Pt was loaded onto Cd0.53Zn0.47S by photodeposition method. SiO2 was deposited onto Cd0.53Zn0.47S by hydrolysis of the tetraethylorthosilicate (TEOS), and the effect of the hydrolysis pH on the activity of the catalysts was studied. The samples were characterized by X-ray diffraction (XRD), BET surface area, photoluminescence (PL), UV-Vis diffusive reflectance spectroscopy (UV-Vis DRS), and scanning electron microscope (SEM) techniques. The composite SiO2 prevented effectively photocorrosion and coalescence of Pt-Cd0.53Zn0.47S nanoparticles during the photocatalytic reaction, and improved the charge separation of photogenerated electrons and holes. Therefore, the stability and the activity of Pt-Cd0.53Zn0.47S for photocatalytic hydrogen generation
under visible light irradiation were improved greatly.
- Photocatalyst; SiO2/Pt-Cd0.53Zn0.47S; Hydrogen production; Solid solution
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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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通讯作者: 陈斌, bchen63@163.com

Photocatalytic Properties of Composite of SiO₂ and Pt-Cd_0.53Zn_0.47S Solid Solutions