| 纳米TiO2表面电位特性的研究 |
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| 引用本文： | 林嵩,徐宏,古宏晨. 纳米TiO2表面电位特性的研究[J]. 材料科学与工程学报, 2004, 22(4): 544-546 |
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| 作者姓名： | 林嵩 徐宏 古宏晨 |
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| 作者单位： | 1. 华东理工大学材料学院,上海,200237
2. 上海交通大学纳米材料科学与技术工程中心,上海,200030 |
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| 摘 要： | 纳米颗粒表面Zeta电位对颗粒的分散稳定性影响很大.本文研究了包覆SiO2前后的纳米TiO2在不同pH值条件下、不同溶剂(水、乙二醇、乙醇)以及不同离子浓度情况下的Zeta电位变化,并用质子迁移理论进行分析,为制备稳定的分散体系提供一定的理论指导.
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| 关 键 词： | 纳米TiO2 Zeta电位 质子迁移 |
| 文章编号： | 1004-793X(2004)04-0544-03 |
| 修稿时间： | 2003-10-08 |
Surface Charge Properties of Nano-titanium Dioxide |
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| LIN Song ,XU Hong ,GU Hong-chen. Surface Charge Properties of Nano-titanium Dioxide[J]. Journal of Materials Science and Engineering, 2004, 22(4): 544-546 |
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| Authors: | LIN Song XU Hong GU Hong-chen |
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| Affiliation: | LIN Song 1,XU Hong 2,GU Hong-chen 2 |
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| Abstract: | The Zeta potential of nanoparticles surface influences the dispersion stability of nanoparticles severely. The Zeta potential changes of the Nano-titanium dioxide(TiO 2) before and after coated with SiO 2 under different pH conditions are studied in this paper. The differences of Zeta potential of TiO 2 nanoparticles in three different solvents (water, ethylene glycol and ethanol) and in different ionic concentration solvent are also studied. The surface properties of TiO 2 nanoparticles are analyzed with proton transfer theory to provide theoretical guide for the improvement of dispersion stability. |
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| Keywords: | titanium dioxide zeta potential proton transfer |
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