Citation: WANG Xiao-Xia, XU Hua-Long, SHEN Wei, RUHLMANN Laurent, QIN Feng, SORGUES Sébastien, COLBEAU-JUSTIN Christophe. Synthesis of Ternary Hybrid TiO₂-SiO₂-POM Catalysts and Its Application in Degrading Rhodamine B under Visible Light Illumination[J]. Acta Physico-Chimica Sinica, ;2013, 29(09): 1837-1841. doi: 10.3866/PKU.WHXB201307024 shu

Synthesis of Ternary Hybrid TiO₂-SiO₂-POM Catalysts and Its Application in Degrading Rhodamine B under Visible Light Illumination

1.
1 Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, P. R. China;
2 Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, Institut de Chimie, UMR au CNRS n°7177, Université de Strasbourg, France;
3 Laboratoire de Chimie Physique, UMR au CNRS n°8000, Université Paris-Sud 11, Orsay, France

Received Date: 15 May 2013
Available Online: 2 July 2013
Fund Project: 上海市科委科技基金(12DZ2275100) (12DZ2275100)

Ternary hybrid TiO₂-SiO₂-polyoxometalates (POMs) synthesized by stepped sol-gel method exhibit remarkable efficiency in photodegrading the industrial dye Rhodamine B. Time resolved microwave conductivity (TRMC) and diffuse reflection spectrophotometry (DRS) were used to investigate excess charge-carrier lifetimes and the band gap of the ternary hybrid TiO₂-SiO₂-POM catalysts. The binding of TiO₂ and SiO₂ reinforces absorbance across the visible spectra and the combination of TiO₂ and POMs improves the stability of h⁺-e^- pairs, which are the active sites of the reaction. In the ternary hybrid system, the synergistic effect amongst the three components contributes to better photocatalytic ability under visible light illumination when compared with either monomer TiO₂ or POMs.
- TiO₂-SiO₂-POM,
- Rhodamine B,
- Synergistic effect,
- Photodegradation under visible light illumination
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Synthesis of Ternary Hybrid TiO2-SiO2-POM Catalysts and Its Application in Degrading Rhodamine B under Visible Light Illumination

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通讯作者: 陈斌, bchen63@163.com

Synthesis of Ternary Hybrid TiO₂-SiO₂-POM Catalysts and Its Application in Degrading Rhodamine B under Visible Light Illumination