| 用高分子保护的纳米MgO的合成 |
| The Preparation of MgO Nanoparticles Protected by Polymer |
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| 摘要: 本文利用高分子表面保护的化学沉淀方法成功地制备了粒径分布均匀的类球型纳米MgO.并对所制得的纳米粒子采用红外光谱(IR)、透射电镜(TIM)、差热及热重分析(TG-DTA)和X射线衍射(XRD)等现代分析测试手段进行了表面形貌、结构、晶形和组成等的表征。结果表明利用高分子的表面保护作用能够控制纳米微粒的形状和大小;由于聚乙烯醇分子中多羟基与金属离子间强的相互作用,因此获得的纳米微粒粒径更小,分散性更好。 |
| 关键词: 纳米粒子 MgO 高分子表面保护作用 合成 表征 |
| 基金项目: 北京市科技新星计划资助项目(No.9558103400). |
| Abstract: The MgO nanoparticles with narrow size distribution has been successfully prepared using chemical precipitation, in which the polymer is surface protection agent of particle.The structure, crystal type and surface state were characterized by means of physical techniques, including IR, TEM, TG-DTA and XRD measurement.The IRdata revealed that intensive interaction exist between PVA and precursor, and the microstructure measured by TEM and XRD is spherical-like shape and cubic MgO.The average size is only 15nm in polyvinyl alcohol (PVA) comparing with 23nm in polyethylene glycol (PEG), The different size may be related to the molecular structure of polymer.The results showed that the shapes and sizes of nanoparticles could be controlled and modified by polymer. |
| Keywords: nanoparticles MgO polymer protection agent synthesis characterization |
| 投稿时间：2000-11-14 修订日期：2000-12-28 |
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| 酒金婷,李立平,葛钥,张涑戎,屠凡,花智仁,聂凌.用高分子保护的纳米MgO的合成[J].无机化学学报,2001,17(3):361-365. |
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