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Preparation of Ag-sensitized ZnO and its photocatalytic performance under simulated solar light

  • Energy and Environmental Engineering
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Abstract

ZnO was prepared rapidly by microwave heating method. The results of scanning electron microscopy show that the leaflike ZnO is composed of self-assembled ZnO particles of 30–50 nm. Ag-sensitized ZnO composite was prepared by UV-photoreduction and glycol reduction, respectively. The composite was characterized by means of scanning electron microscopy, X-ray diffraction and photoluminescence. The ZnO and Ag/ZnO prepared were applied in photocatalytic degradation of phenol and methyl orange as model of organic pollutant in water under simulated solar light. The results show that Ag doping in both methods of UV-photoreduction and glycol reduction can remarkably improve the photocatalytic activity of ZnO under simulated solar light. The utilization ratio of Ag in glycol reduction is high and the optimum content of Ag in Ag/ZnO composite is only 1.33%. Therefore, the glycol reduction is a novel and excellent method for preparing Ag-sensitized ZnO composite with high photocatalytic activity.

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Authors and Affiliations

  1. The School of Chemical and Energy Engineering, South China University of Technology, Guangzhou, 510640, P. R. China

    Feng Peng, Hancai Zhu, Hongjuan Wang & Hao Yu

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  1. Feng Peng
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  2. Hancai Zhu
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  3. Hongjuan Wang
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  4. Hao Yu
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Correspondence to Feng Peng.

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Peng, F., Zhu, H., Wang, H. et al. Preparation of Ag-sensitized ZnO and its photocatalytic performance under simulated solar light. Korean J. Chem. Eng. 24, 1022–1026 (2007). https://doi.org/10.1007/s11814-007-0114-7

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  • DOI: https://doi.org/10.1007/s11814-007-0114-7

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