| 三元杂化TiO2-SiO2-POMs催化剂的合成及其在可见光降解罗丹明B中的应用 |
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| 引用本文： | 王晓夏,徐华龙,沈伟,RUHLMANN Laurent,秦枫,SORGUES Sébastien,COLBEAU-JUSTIN Christophe.三元杂化TiO2-SiO2-POMs催化剂的合成及其在可见光降解罗丹明B中的应用[J].物理化学学报,2013,29(9):1837-1841. |
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| 作者姓名： | 王晓夏 徐华龙 沈伟 RUHLMANN Laurent 秦枫 SORGUES Sébastien COLBEAU-JUSTIN Christophe |
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| 作者单位： | 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 |
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| 基金项目： | supported by the Shanghai Committee of Science and Technology,China(12DZ2275100); Centre National de la Recherche Scientifique,France and Universitéde Strasbourg,France~~ |
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| 摘 要： | 采用分步溶胶-凝胶法制备的三元杂化催化剂TiO2-SiO2-杂多酸(POMs)在可见光降解工业染料罗丹明B中表现出了高效反应活性. 利用时间分辨微波传导(TRMC)和漫反射光谱(DRS)研究了催化剂在可见光区的光催化性能, 实验结果表明: 在三元杂化催化剂内, 二氧化钛和二氧化硅的键合加强了催化剂在可见光区的响应和吸收, 二氧化钛和杂多酸的结合提高了反应活性位(空穴-电子对)的稳定性. 三元杂化催化剂TiO2-SiO2-POMs中组分之间的协同效应促进了可见光光催化性能的提高.
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| 关 键 词： | TiO2-SiO2-POMs 罗丹明B 协同效应 可见光降解 |
| 收稿时间： | 2013-05-15 |
| 修稿时间： | 2013-07-02 |
Synthesis of Ternary Hybrid TiO2-SiO2-POM Catalysts and Its Application in Degrading Rhodamine B under Visible Light Illumination |
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| WANG Xiao-Xia,XU Hua-Long,SHEN Wei,RUHLMANN Laurent,QIN Feng,SORGUES Sé,bastien,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(9):1837-1841. |
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| Authors: | WANG Xiao-Xia XU Hua-Long SHEN Wei RUHLMANN Laurent QIN Feng SORGUES Sé bastien COLBEAU-JUSTIN Christophe |
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| Institution: | 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 |
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| Abstract: | 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. |
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| Keywords: | 2-SiO2-POM' ') TiO2-SiO2-POM" target="_blank">">TiO2-SiO2-POM Rhodamine B Synergistic effect Photodegradation under visible light illumination |
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