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Citation: YAN Xiaoling, JIA Lihua, GUO Xiangfeng. Synthesis and Photocatalytic Activities of Chlorinedoped TiO₂ Pillared Montmorillonite[J]. Chinese Journal of Applied Chemistry, ;2011, 28(3): 278-283. doi: 10.3724/SP.J.1095.2011.00313 shu

Synthesis and Photocatalytic Activities of Chlorinedoped TiO₂ Pillared Montmorillonite

1.
College of Chemistry and Chemical Engineering of Qiqihar University, Qiqihar 161006

Corresponding author: JIA Lihua,
Received Date: 26 May 2010
Available Online: 10 September 2010
Fund Project: 黑龙江省自然科学基金(E200530)资助项目 (E200530)

Chlorine-doped titanium pillared montmorillonite(Cl-TM) was prepared by the sol-gel technique in order to improve the photocatalytic activity. X-ray diffraction(XRD), scanning electron microscope(SEM), energy dispersive spectroscopy (EDS), UV-Vis diffuse reflectance spectroscopy (UV-Vis-DRS), photoluminescence spectrometer(PLS), X-ray photoelectron spectroscopy (XPS), fourier-transform infrared spectroscopy(FT-IR), N₂ adsorption-desorption (BET) were used to characterize the products. The results show that the products had typical anatase phase while keeping the pillared structure of montmorillonite. The presence of montmorillonite can inhibite the phase transformation of titania from anatase to rutile. In addition, Chlorine-doped sample can reduce the band gap energy of TiO₂ from 3.19 eV to 3.14 eV and therefore extend the light response of TiO₂ to visible light region. XPS data imply that chlorine existed in the TiO₂ crystal lattice as an anion. Furthermore, the photocatalytic degradation of PNA by Cl-TM indicates that the activity was significantly affected by chlorine-doped amount, and the optimized content is 6% (molar ratio of Cl to Ti).
- chlorine-doped,
- titanium pillared montmorillonite,
- photocatalytic,
- p-nitroaniline
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Synthesis and Photocatalytic Activities of Chlorinedoped TiO2 Pillared Montmorillonite

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Synthesis and Photocatalytic Activities of Chlorinedoped TiO₂ Pillared Montmorillonite