| 纳米ZnO制备工艺中ζ电位与分散性的关系 |
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| 引用本文： | 李强,高濂,奕伟玲,严东生.纳米ZnO制备工艺中ζ电位与分散性的关系[J].无机材料学报,1999,14(5):813-817. |
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| 作者姓名： | 李强 高濂 奕伟玲 严东生 |
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| 作者单位： | 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海 200050 |
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| 基金项目： | 上海市科委新材料研究中心！98JC14021 |
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| 摘 要： | 本工作采用化学工艺制备１０ｎｍ左右的ＺｎＯ粉体，并对工艺过程中碱式碳酸锌前驱体分散性和表面电位之间的关系进行了研究．专门对洗涤后粉体表面电位进行了分析．发现采用蒸馏水洗涤后粉体的ζ电位明显降低，接近其等电点，并导致粉体团聚．因此，在洗涤过程中，使用０．１Ｍ氨水取代蒸馏水来控制ｐＨ值，提高电位，改善粉体的分散性．
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| 关 键 词： | ZnO 纳米 电位 团聚 洗涤 |
| 收稿时间： | 1998-11-30 |
| 修稿时间： | 1999-1-5 |
Relation between Potential and Dispersity in the Preparation Processof Nano-scale ZnO |
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| LI Qiang,GAO Lian,LUAN Wei-Ling,YAN Dong-Sheng.Relation between Potential and Dispersity in the Preparation Processof Nano-scale ZnO[J].Journal of Inorganic Materials,1999,14(5):813-817. |
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| Authors: | LI Qiang GAO Lian LUAN Wei-Ling YAN Dong-Sheng |
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| Affiliation: | State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute ofCeramics; Chinese Academy of Sciences Shanghai 200050 China |
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| Abstract: | Nano-scale powders (about 10nm) of ZnO were prepared by chemical method. Also therelation between potential and dispersity of zinc carbonate hydroxide precursor in the procedurewas studied. After being washed, the potential of particles was specially examined. It was foundthat the potential of particles decreased obviously and closed to its isoelectric point after beingwashed by distilled water. This phenomenon certainly caused the aggregation of particles. So inwashing process, the 0.1M ammonia was used instead of distilled water to controll pH value andincrease potential. Finally the dispersity of powders was improved. |
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| Keywords: | ZnO nano-scale potential aggregation washing |
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