| 高效光催化活性钠米农药制剂的制备 |
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| 引用本文： | 颜昌利,司士辉,王跃龙,王晓光.高效光催化活性钠米农药制剂的制备[J].广州化学,2004,29(2):5-8. |
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| 作者姓名： | 颜昌利 司士辉 王跃龙 王晓光 |
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| 作者单位： | 中南大学,化学化工学院,湖南,长沙,410083;湖南省化工研究院,湖南,长沙,410007 |
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| 基金项目： | 国家“863”项目(2001AA218041) |
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| 摘 要： | 采用钛酸丁酯水解法制备出直径约为20 nm的纳米TiO2,并用钛酸丁酯对其进行改性。研究表明TiO2与硬脂酸事实上通过化学键键合,由亲水性变为亲油性。文中还提出了三种制备TiO2复合纳米农药制剂的方案,并探讨了几种TiO2复合纳米农药制剂在不同条件下的光催化降解率。结果表明,采用钛酸丁酯为原料直接在农药乳油中原位生成的TiO2复合纳米农药制剂与原农药性状保持基本一致,光催化降解率最大。
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| 关 键 词： | 纳米TiO2 硬脂酸改性 农药 光降解 |
| 文章编号： | 1009-220X(2004)02-0005-04 |
| 修稿时间： | 2003年11月11 |
Preparation of Nanosized TiO2-Pesticide Complex with High Photocatalytic Activity |
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| YAN Chang-li,SI Shi-hui,WANG Yue-long,WANG Xiao-guang.Preparation of Nanosized TiO2-Pesticide Complex with High Photocatalytic Activity[J].Guangzhou Chemistry,2004,29(2):5-8. |
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| Authors: | YAN Chang-li SI Shi-hui WANG Yue-long WANG Xiao-guang |
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| Institution: | YAN Chang-li1,SI Shi-hui*1,WANG Yue-long2,WANG Xiao-guang2 |
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| Abstract: | Nanocrystalline TiO2 was prepared by Ti(O-Bu)4 hydrolyzing, the obtained particles were globular in shape and its grain size was about 20nm. The nanocrystalline TiO2 particles were modified with stearic acid. A covalent bond formed between the surface hydroxylic groups and organic long-chain molecules such as stearic acid. Through this kind of chemical reaction, the hydrophilic property of nanocrystalline TiO2 changed into lipophilic property. Three methods for the preparation of nanosized TiO2-pesticide complex were investigated. Experimental results showed that the nanosized TiO2-pesticide complex that was prepared in-situ has highest photodegradation rate. |
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| Keywords: | nanocrystalline TiO2 stearic acid pesticide photodegradation |
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