Preparation and Enhanced Photocatalytic Activity of AgCl-TiO2 Composite under Simulated Solar Light

Wen Tao Yi; Chun Yan Yan; Peng Yan; Shu Yin Liu

doi:10.4028/www.scientific.net/AMR.807-809.557

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Preparation and Enhanced Photocatalytic Activity of AgCl-TiO₂ Composite under Simulated Solar Light

Abstract:

AgCl-TiO₂ nanocomposites with a core-shell structure were successfully prepared by hydrothermal treatment. And the products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Brunauer Emmett teller (BET) Analysis, and UV-vis diffuse reflectance spectroscopy (DRS). It is found that the composites consist of anatase TiO₂ and cubic phase AgCl, which has higher surface area, stronger spectral response in visible region compared with pure TiO₂. The photocatalytic activity of these samples was evaluated by photocatalytic decoloration of methyl orange (MO) under simulated solar light. The results show AgCl-TiO₂composite has much higher photocatalytic activity than that of pure TiO₂, and it also has very good stability. The kinetic study showed that this photocatalytic process coincided with the Langmuir-Hinshelwood (L-H) pseudo first order reaction model.