正硅酸乙酯
材料科学
超临界二氧化碳
超临界流体
扫描电子显微镜
聚苯乙烯
微球
聚合物
二氧化钛
化学工程
玻璃微球
复合数
微粒
溶胶凝胶
透射电子显微镜
纳米技术
复合材料
化学
有机化学
工程类
作者
Zhimin Chen,Shijiang Li,Fengfeng Xue,Guannan Sun,Chengguo Luo,Jiafu Chen,Qun Xu
标识
DOI:10.1016/j.colsurfa.2009.11.030
摘要
Using the excellent transport properties of supercritical carbon dioxide, tetraethyl orthosilicate (TEOS) could be easily carried into the template of the cross-linked polystyrene (PS) microspheres. Through the sol–gel procedure, the TEOS penetrated into the PS microspheres was transferred into silica. After sintering these composite particles, hollow silica microspheres were obtained. Through the above method, the hollow titanium dioxide microspheres also could be synthesized. The formation mechanism of the hollow particles was discussed and the morphology of the hollow microspheres was characterized by transmission electron microscopy (TEM) and scanning electronic microscope (SEM).
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