| RuO2/TiO2/漂珠复合光催化剂的制备及性能 |
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| 引用本文： | 姚秉华,王理明,王骋,王逸迅,赵高阳.RuO2/TiO2/漂珠复合光催化剂的制备及性能[J].化学物理学报,2007,20(6):789-795. |
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| 作者姓名： | 姚秉华 王理明 王骋 王逸迅 赵高阳 |
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| 作者单位： | 西安理工大学理学院应用化学系,西安710048,西安理工大学理学院应用化学系,西安710048;西安工程大学环境与化工学院,西安710048,西安理工大学理学院应用化学系,西安710048,西安理工大学理学院应用化学系,西安710048,西安理工大学理学院应用化学系,西安710048;西安工程大学环境与化工学院,西安710048 |
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| 摘 要： | "利用RuO2/TiO2前驱体溶胶,采用溶胶-凝胶-浸渍法在漂珠(FP)表面沉积RuO2/TiO2膜,经120 ℃干燥、500 ℃焙烧制备复合光催化剂RuO2/TiO2/FP,并通过SEM、XRD以及FT-IR分别对其结构进行了表征． 结果表明,RuO2/TiO2膜的平均厚度(三层)约1 1m,膜材料中TiO2主要呈现锐钛矿型结构,而RuO2是以非晶态高度分散在粒子表面．以高效氯氰菊酯杀虫剂的光催化降解为模型反应,研究了RuO2/TiO2/FP的光催化性能,探讨了影响催化剂活性的因素及采用太阳光做光源处理
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| 关 键 词： | 光催化膜 光催化降解 RuO2/TiO2复合光催化剂 漂珠 高效氯氰菊酯 |
| 收稿时间： | 2007/8/30 0:00:00 |
| 修稿时间： | 2007/9/10 0:00:00 |
Preparation and Performances of RuO2/TiO2 Films Photocatalyst Supported on Float Pearls |
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| Bing-hua Yao,Li-ming Wang,Cheng Wang,Yi-xun Wang and Gao-yang Zhao.Preparation and Performances of RuO2/TiO2 Films Photocatalyst Supported on Float Pearls[J].Chinese Journal of Chemical Physics,2007,20(6):789-795. |
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| Authors: | Bing-hua Yao Li-ming Wang Cheng Wang Yi-xun Wang and Gao-yang Zhao |
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| Institution: | Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China,Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China; School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, China,Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China,Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China,Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China; School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, China |
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| Abstract: | "RuO2/TiO2 films were deposited on float pearls (FP) by the sol-gel-dipping method. The substrates were coated with RuO2/TiO2 precursor sol, air-dried at 120 oC and further heated at 500 oC to obtain the coupled photocatalyst of RuO2/TiO2 films supported on FP (RuO2/TiO2/FP). The structure of coupled photocatalyst was characterized by SEM, XRD, and FT-IR technique, respectively. The results showed TiO2 has anatase structure and doped RuO2 was highly dispersed on the surface of TiO2 particles as amorphous. The average thickness of RuO2/TiO2 films (3 layers) on FP was determined to be about 1 1m. This study was carried out under the following conditions: volume 60 mL, initial concentration of beta-cypermethrin (BEC) 45 mg/L, pH 6.5, amount of RuO2/TiO2/PF 5 g/L, air flow rate 200 mL/min, reaction time 60 min. The degradation rates of BEC are 88.1% (125 W Hg lamp), 82.8% (8 W UV lamp), and 75.1% (8 W solar lamp), respectively. The photocatalytic degradation of BEC was experimentally demonstrated to follow the Langmuir-Hinshelwood kinetic model, and the reaction rate constant (17.5 mg/(L min)) and the adsorption constant (3.486 L/g) were determined, respectively. It was also found that the RuO2/TiO2 /FP photocatalyst has significantly the visible light photoactivity for degradation of BEC." |
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| Keywords: | Photocatalytic films Photocatalytic degradation RuO2/TiO2 coupled photocatalyst Float pearls Beta-cypermethrin |
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