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| 乙醇 /水混合溶剂沉淀制备纳米BaF2及粒径控制 | |
| 引用本文： | 吕燕飞,吴希俊,吴大雄.乙醇 /水混合溶剂沉淀制备纳米BaF2及粒径控制[J].无机化学学报,2007,23(7):1174-1178. |
| 作者姓名： | 吕燕飞 吴希俊 吴大雄 |
| 作者单位： | 1. 浙江大学材料与化工学院,杭州,310027;杭州电子科技大学理学院,杭州,310018 2. 浙江大学材料与化工学院,杭州,310027 3. 浙江大学材料与化工学院,杭州,310027;青岛科技大学材料科学与工程学院,青岛,266042 |
| 摘 要： | 采用水和乙醇混合溶剂沉淀的方法制备了不同粒径的BaF2纳米粉体。用XRD、TEM和FSEM表征了粉体的粒径和形貌。研究了陈化时间、水和乙醇的体积比对BaF2纳米粉体的粒径和形貌的影响。结果表明，随混合溶剂中乙醇含量升高，沉淀粒径减小。BaF2沉淀粒径的倒数和溶剂介电常数的倒数呈线性关系，据此关系可以控制BaF2纳米粉体的粒径。 |
| 关 键 词： | BaF2 纳米粉体 粒径控制 混合溶剂 沉淀 |
| 文章编号： | 1001-4861（2007）07-1174-05 |
| 修稿时间： | 2007-03-162007-05-15 |
Synthesis and Size Control for Nanocrystalline Barium Fluoride Powder by Precipitation in Ethanol/Aqueous Mixed Solvents |
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| LU Yan-Fei,WU Xi-Jun and WU Da-Xiong.Synthesis and Size Control for Nanocrystalline Barium Fluoride Powder by Precipitation in Ethanol/Aqueous Mixed Solvents[J].Chinese Journal of Inorganic Chemistry,2007,23(7):1174-1178. | |
| Authors: | LU Yan-Fei WU Xi-Jun and WU Da-Xiong |
| Institution: | College of Materials Science and Chemical Engnieering, Zhejiang University, Hangzhou 310027;School of Science, Hangzhou Dianzi University, Hangzhou 310018,College of Materials Science and Chemical Engnieering, Zhejiang University, Hangzhou 310027 and College of Materials Science and Chemical Engnieering, Zhejiang University, Hangzhou 310027;College of Materials Science and Engineering, Qingdao University of Science and Technologhy, Qingdao, Shandong 266042 |
| Abstract: | The BaF2 nanocrystalline powders with different particle sizes were synthesized by precipitation in the ethanol-water mixed solvents. The particle size and morphology of BaF2 powder were characterized by TEM, FSEM and XRD. The influence of the aging time and the volume ratio of water to ethanol on the particle size and morphology of BaF2 powders were studied. The results indicate that the size of BaF2 powders decreases with increasing volume ratio of ethanol to water of mixed solvents. The particle size of BaF2 nano-powder could be controlled according to the linear relationship between the reciprocal of BaF2 particle size and the reciprocal of dielectric constant of mixed solvents. |
| Keywords: | BaF2 nanocrystalline powder size control mixed solvent precipitation |
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