| 球形SiO2颗粒的合成及反应机理 |
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| 引用本文： | 孙恕富,董景伟,张志荣,高美珍.球形SiO2颗粒的合成及反应机理[J].材料导报,2009,23(Z1). |
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| 作者姓名： | 孙恕富 董景伟 张志荣 高美珍 |
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| 作者单位： | 兰州大学物理科学与技术学院,兰州,730000 |
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| 基金项目： | 甘肃省自然科学基金委科技攻关项目，教育部磁学与磁性材料重点开放实验基金 |
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| 摘 要： | 利用Stober方法合成了球形SiO2颗粒.在乙醇和水的混合溶剂中,以正硅酸乙酯(TEOS)为硅源、氨水作催化剂,在40℃水浴下制备SiO2球形颗粒.通过改变反应物TEOS以及催化剂氨水的加入量,制备了不同粒径的球形SiO2颗粒.利用扫描电镜(SEM)可以看出,随着TEOS和氨水加入量的增加,SiO2颗粒的粒径增大,并探讨了其变化机理.
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| 关 键 词： | SiO2颗粒 粒径 氨水 |
Preparation and Reaction Mechanisms of Silicon Dioxide Spherical Particles |
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| SUN Shufu,DONG Jingwei,ZHANG Zhirong,GAO Meizhen.Preparation and Reaction Mechanisms of Silicon Dioxide Spherical Particles[J].Materials Review,2009,23(Z1). |
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| Authors: | SUN Shufu DONG Jingwei ZHANG Zhirong GAO Meizhen |
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| Abstract: | In this paper,Stober method is used to synthesize SiO2 particles.The ethanol and water are mixed as the solvent,adding TEOS as the silicon source and ammonia as catalyst to the process of the spherical silica particles at 40℃.By increasing the content of TEOS and ammonia,the size of SiO2 particles increases through scanning electron microscopy (SEM).And the mechanism of the change is discussed. |
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| Keywords: | TEOS SiO2 particle particle size TEOS ammonia |
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