Citation: NIE Long-Hui, HU Yao, ZHANG Wang-Xi. Preparation of a Ag@AgCl-Modified TiO_2-xC_x Photocatalyst and Its Performance for Degradation of Pollutants under Visible Light[J]. Acta Physico-Chimica Sinica, ;2012, 28(01): 154-160. doi: 10.3866/PKU.WHXB201228154 shu

Preparation of a Ag@AgCl-Modified TiO_2-xC_x Photocatalyst and Its Performance for Degradation of Pollutants under Visible Light

1.
School of Chemical and Environmental Engineering, Hubei University of Technology, Wuhan 430068, P. R. China

Received Date: 15 August 2011
Available Online: 14 November 2011
Fund Project: 湖北工业大学博士启动基金(BSQD0826)资助项目 (BSQD0826)

C-doped TiO₂ was prepared from butyl titanate and glucose by a hydrothermal method. The prepared C-doped TiO₂ was further modified with Ag@AgCl. The obtained samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), BET surface area analysis, and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activity of the samples was evaluated by the degradation of methyl orange and phenol under the visible light irradiation (λ >420 nm). After modification with Ag@AgCl, the C-doped TiO₂ samples had a larger particle size and smaller surface area with enhanced response to visible light and greatly improved visible-light photocatalytic activity. The degradation rates of methyl orange and phenol over Ag@AgCl/TiO_2-xC_x were 5.5 and 3.4 times as large as those over TiO_2-xC_x, respectively. The photocatalytic activity of Ag@AgCl/TiO_2-xC_x under visible light remained almost unchanged after three cycles.
- Visible-light activity,
- Ag-AgCl,
- C-doped TiO₂,
- Plasmon resonance,
- Methyl orange,
- Phenol
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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of a Ag@AgCl-Modified TiO2-xCx Photocatalyst and Its Performance for Degradation of Pollutants under Visible Light

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通讯作者: 陈斌, bchen63@163.com

Preparation of a Ag@AgCl-Modified TiO_2-xC_x Photocatalyst and Its Performance for Degradation of Pollutants under Visible Light