| 银钛共负载型光催化材料降解甲基橙废水简 |
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| 引用本文： | 徐荣,葛骁,郭海宁,束正华,封克,王小治.银钛共负载型光催化材料降解甲基橙废水简[J].环境工程学报,2014,8(1):150-156. |
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| 作者姓名： | 徐荣 葛骁 郭海宁 束正华 封克 王小治 |
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| 作者单位： | 江苏省环境材料与环境工程重点实验室, 扬州大学环境科学与工程学院, 扬州;江苏省环境材料与环境工程重点实验室, 扬州大学环境科学与工程学院, 扬州;江苏省环境材料与环境工程重点实验室, 扬州大学环境科学与工程学院, 扬州;江苏省环境材料与环境工程重点实验室, 扬州大学环境科学与工程学院, 扬州;江苏省环境材料与环境工程重点实验室, 扬州大学环境科学与工程学院, 扬州;江苏省环境材料与环境工程重点实验室, 扬州大学环境科学与工程学院, 扬州 |
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| 基金项目： | 污染控制与资源化研究国家重点实验室开放课题（PCRRF11002）；扬州市科技攻关项目（YZ2011111）；扬州市环保科技项目（YHK1204） |
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| 摘 要： | 以膨胀珍珠岩为载体，采用溶胶凝胶法对其进行负载，制备出不同类型的光催化材料（TiO2-EP、Ag+-TiO2-EP），并在模拟日光条件下，研究其对甲基橙溶液的降解效果。结果表明，浸渍3次且担载0.04% Ag+的负载型TiO2光催化活性最高，在光催化剂用量为0.3 g，20 mL初始浓度为10 mg/L甲基橙溶液光照4 h后降解率可达81.6%，且甲基橙的光催化降解服从一级动力学方程。回收3次后仍有较强的活性，其2 h降解率为24.8%。
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| 关 键 词： | 膨胀珍珠岩 光催化剂 Ag+-TiO2-EP 甲基橙 |
| 修稿时间： | 3/6/2013 12:00:00 AM |
Photocatalytic degradation of methyl orange wastewater by co-deposited(Ag+-TiO2-EP) material |
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| Xu Rong,Ge Xiao,Guo Haining,Shu Zhenghu,Feng Ke and Wang Xiaozhi.Photocatalytic degradation of methyl orange wastewater by co-deposited(Ag+-TiO2-EP) material[J].Techniques and Equipment for Environmental Pollution Control,2014,8(1):150-156. |
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| Authors: | Xu Rong Ge Xiao Guo Haining Shu Zhenghu Feng Ke and Wang Xiaozhi |
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| Institution: | Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province;College of Environmental Science and Engineering, Yangzhou University, Yangzhou, China;Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province;College of Environmental Science and Engineering, Yangzhou University, Yangzhou, China;Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province;College of Environmental Science and Engineering, Yangzhou University, Yangzhou, China;Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province;College of Environmental Science and Engineering, Yangzhou University, Yangzhou, China;Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province;College of Environmental Science and Engineering, Yangzhou University, Yangzhou, China;Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province;College of Environmental Science and Engineering, Yangzhou University, Yangzhou, China |
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| Abstract: | Different floating photocatalysts including TiO2-EP and Ag+-TiO2-EP were successfully synthesized by Sol-Gel method using tetrabutyl titanate as precursor and expanded perlite (EP) as support. Under simulative sunlight, the degradation rate of methyl orange by different photocatalysts, as well as the effect of different loading times, the dosage and the initial concentration of methyl orange were investigated. The results showed that Ag+-TiO2-EP which modified three times with Ag+-TiO2 (0.04% Ag+) had the highest photocatalyst ability. The degradation rate of the methyl orange solution (20 mL, 10 mg/L) which were decomposed by Ag+-TiO2-EP (0.3 g) in 4 h was 81.6%. The reaction of photocatalysis for methyl orange can be expressed as first-order kinetic mode within the concentration range of methyl orange between 5 mg/L and 15 mg/L. Ag+-TiO2-EP still had the relatively higher photocatalytic activity after three times recycling and the degradation rate of methyl orange was 24.8% within 2 h. |
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| Keywords: | expanded perlite photocatalysts Ag+-TiO2-EP methyl orange |
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