| 纳米金属氧化物：复合分散法制备及分散性 | |
| Nanosized Metal Oxides： Preparation by Composite Dispersing Method and Dispersity | |
| 摘要: 通过采用水热晶化与荷电复合分散法制备γ-AlOOH、R-TiO2和α-Al2O3纳米晶体粉末，利用TEM和激光粒度分析仪等手段研究了纳米颗粒水热晶化与荷电复合分散的分散效果及其工艺条件,并探讨了金属氧化物纳米颗粒水热晶化与荷电复合分散机理。结果表明，晶化与荷电复合分散可明显改善金属氧化物纳米颗粒在液相中的分散稳定性，所制得的AlOOH、TiO2和Al2O3纳米颗粒在水中分散放置24 h后的透光率的变化率D24还可分别保持为94.1%、87.7%和82.2%；在水中分散后的粒径分布统计的平均粒径分别为67、70和143 nm。 | |
| 关键词: 纳米颗粒 复合分散 水热晶化 荷电 | |
| 基金项目: | |
| Abstract: γ-AlOOH, R-TiO2 and α-Al2O3 nanocrystal powders were prepared by a charge composite dispersing method of hydrothermal crystallization. TEM, SEM and laser particle size analysis were used to study dispersion effect and technical conditions of hydrothermal crystallization and charge composite dispersion process. And a mechanism for hydrothermal crystallization and charging composite dispersion of metal oxides nanoparticles was suggested. The results show that the composite method can improve particle dispersion stability in liquid. The change rate of transmittance(D24) of the prepared γ-AlOOH, TiO2 and Al2O3 nanoparticles at 24 h after dispersion in water is 94.1%, 87.7% and 82.2%, respectively. The average particle sizes are respectively 66.52 nm, 69.53 nm and 143 nm. | |
| Keywords: nanoparticle composite dispersion hydrothermal crystallization charging | |
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| 全文下载次数: 2027 | |
| 廖海达,钟莲云,马少妹,吴伯麟,张联盟.纳米金属氧化物：复合分散法制备及分散性[J].无机化学学报,2008,24(10):1643-1649. | |
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