| 溶胶-凝胶法制备La2O3纳米粉体 |
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| 引用本文： | 王茂林,王新刚,杨志懋,王亚平,丁秉钧.溶胶-凝胶法制备La2O3纳米粉体[J].稀有金属材料与工程,2005,34(3):425-428. |
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| 作者姓名： | 王茂林 王新刚 杨志懋 王亚平 丁秉钧 |
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| 作者单位： | 1. 西安交通大学,陕西,西安,710049
2. 中科院金属研究所,辽宁,沈阳,110016 |
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| 基金项目： | 国家自然科学基金资助项目(50071043) |
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| 摘 要： | 以普通La2O3,硝酸,聚乙二醇为原料,利用溶胶-凝胶法制备了纳米La2O3粉体,利用TG-DTA,XRD,TEM等各种测试方法对干凝胶300℃灼烧所得前驱体粉末的分解过程及最终形成的纳米氧化镧粉体进行了分析和表征,并研究了浓度、搅拌和分散剂聚乙二醇(PEG)添加量等因素的改变对La2O3粉体的粒径、形态的影响.实验结果表明,在适当工艺参数下,可以制得平均粒径小于50 nm的La2O3粉体.
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| 关 键 词： | 纳米La2O3 溶胶 凝胶法 稀土 |
| 文章编号： | 1002-185X(2005)03-0425-04 |
| 修稿时间： | 2003年9月4日 |
Preparation of Nanocrystalline La2O3 by Sol-Gel Method |
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| Wang Maolin,Wang Xingan,Yang Zhimao,Wang Yaping,Ding Bingjun.Preparation of Nanocrystalline La2O3 by Sol-Gel Method[J].Rare Metal Materials and Engineering,2005,34(3):425-428. |
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| Authors: | Wang Maolin Wang Xingan Yang Zhimao Wang Yaping Ding Bingjun |
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| Abstract: | Nanocrystalline La2O3 was prepared by sol-gel process using common La2O3, HNO3 and PEG. The decomposition process of the precursor powder and the calcened nanocrystalline La2O3 formed at the end were charactered with various techniques: TG-DTA, XRD and TEM and the effects of some factors such as pH value of the solution, stirring rate and the amount of the PEG in the solution on the particle size and morphology are investigated. The result shows that the nanocrystalline La2O3 can be obtained with particle diameter of 30 nm~50 nm under appropriate conditions. |
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| Keywords: | nanocrystalline La2O3 method of sol-gel rare earths |
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