| 喷射共沉淀法制备纳米ZnFe_2O_4及其结构表征 |
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| 引用本文： | 焦正,李民强,边历峰,刘锦淮,钱逸泰.喷射共沉淀法制备纳米ZnFe_2O_4及其结构表征[J].无机化学学报,2001,17(5). |
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| 作者姓名： | 焦正 李民强 边历峰 刘锦淮 钱逸泰 |
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| 作者单位： | 1. 中国科学技术大学化学系
2. 中国科学院合肥智能机械研究所 |
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| 基金项目： | 国家自然科学基金资助项目(No.69774028)。 |
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| 摘 要： | 对化学共沉淀法加以改进称为喷射共沉淀法。采用喷射共沉淀法制备了ZnFe2O4纳米粉末材料。采用XRD、SEM和TEM进行结构分析结果表明喷射共沉淀法制备的ZnFe2O4纳米粉末颗粒细小均匀形状完整。由于纳米尺寸效应的存在纳米ZnFe2O4粉末材料具有铁磁性。从流体力学角度分析了喷射共沉淀法中物质的输运和反应过程并解释了试验结果。认为喷射共沉淀法是一种较好的制备氧化物纳米粉末材料的方法。
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| 关 键 词： | 化学共沉淀 纳米材料 ZnFe2O4 |
The Preparation of Nano ZnFe_2O_4 by Spraying Coprecipitation and its Structure Analysis |
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| JIAO Zheng,LI Ming-Qiang,BIAN Li-Feng,LIU Jin-Huai,QIAN Yi-Tai.The Preparation of Nano ZnFe_2O_4 by Spraying Coprecipitation and its Structure Analysis[J].Chinese Journal of Inorganic Chemistry,2001,17(5). |
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| Authors: | JIAO Zheng LI Ming-Qiang BIAN Li-Feng LIU Jin-Huai QIAN Yi-Tai |
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| Affiliation: | JIAO Zheng 1 LI Ming-Qiang 2 BIAN Li-Feng 2 LIU Jin-Huai 2 QIAN Yi-Tai 1 |
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| Abstract: | In this paper ZnFe 2 O 4 nano powders were prepared by improved coprecipitation method,which was cal led spraying coprecipitatio n.The XRD,SEM and TEM analysis shows the powder s ize is below 20nm.It was found that the nano powder shows ferrimagnetic chara cteristics,which is due to nano size effect.The transportatio n and reaction o f materials in spraying coprecipitation process was discussed by hydrodynamics m echani sm.The results demonstrated that sp raying coprecipitation can be a new method to prepare nano oxide p owders. |
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| Keywords: | coprecipitation nano-powder Zn Fe_2O_4 |
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