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Preparation and Performances of RuO2/TiO2 Films Photocatalyst Supported on Float Pearls
Bing-hua Yao*, Li-ming Wang, Cheng Wang, Yi-xun Wang, Gao-yang Zhao
Author NameAffiliationE-mail
Bing-hua Yao* Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China bhyao@xaut.edu.cn 
Li-ming Wang 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  
Cheng Wang Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China  
Yi-xun Wang Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China  
Gao-yang Zhao 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  
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."
Key words:  Photocatalytic films, Photocatalytic degradation, RuO2/TiO2 coupled photocatalyst, Float pearls, Beta-cypermethrin
FundProject:
RuO2/TiO2/漂珠复合光催化剂的制备及性能
姚秉华*,王理明,王骋,王逸迅,赵高阳
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
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
DOI:10.1088/1674-0068/20/06/789-795
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