| 添加壳聚糖溶胶-凝胶法制备的TiO_2光催化剂及其光催化性能研究 |
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| 引用本文： | 伊洪坤,卢平,李来胜,张秋云.添加壳聚糖溶胶-凝胶法制备的TiO_2光催化剂及其光催化性能研究[J].环境工程学报,2010,4(1):115-119. |
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| 作者姓名： | 伊洪坤 卢平 李来胜 张秋云 |
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| 作者单位： | 1. 华南师范大学化学与环境学院,广州,510006;广东正业科技股份有限公司,东莞,523270
2. 华南师范大学化学与环境学院,广州,510006 |
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| 摘 要： | 采用添加壳聚糖(CTS)的溶胶-凝胶法制备了具有较高光催化活性的TiO_2光催化剂,并用XRD、TEM、BET和IR等手段对其进行表征。结果表明,CTS的添加使TiO_2衍射强度增强、分散性提高、比表面积增大从而使光催化活性提高;用所制备的催化剂光催化降解甲基橙反应60 min后,其去除率由不添加CTS所制备TiO_2的32%提高到48%,TOC去除率由14%提高到23%。
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| 关 键 词： | TiO2 壳聚糖 溶胶凝胶 光催化 |
| 修稿时间： | 3/1/2009 12:00:00 AM |
Preparation of chitosan added TiO2 photocatalyst by sol-gel method and its photocatalytic activity |
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| Yi Hongkun,Lu Ping,Li Laisheng and Zhang Qiuyun.Preparation of chitosan added TiO2 photocatalyst by sol-gel method and its photocatalytic activity[J].Techniques and Equipment for Environmental Pollution Control,2010,4(1):115-119. |
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| Authors: | Yi Hongkun Lu Ping Li Laisheng and Zhang Qiuyun |
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| Abstract: | This paper investigated the process of preparing chitosan ( CTS ) added TiO_2 photocatalyst with high photocatalytic activity by a sol-gel method, using Ti(OBu)_4 as precursor and ethanol as solvent. The catalyst was characterized by XRD, IR, TEM and BET methods. The optimum concentration of CTS added is lwt% . The photocatalytic activity of CTS added TiO_2 was improved than TiO_2 alone. After 60 minutes photocatalytic degradation for methyl orange, the removal rate increased from 32% to 48% ,and the removal rate of TOC increased from 14% to 23% compared to pure TiO_2. |
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| Keywords: | TiO_2 TiO_2 chitosan sol-gel photocatalysis |
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