高等学校化学学报

高等学校化学学报

• 研究简报 • 上一篇    下一篇

漂浮法制备SiO2有序大孔材料

王晓冬, 仪桂云   

  1. 河南理工大学材料科学与工程学院, 焦作 454003
  • 收稿日期:2007-03-30 修回日期:1900-01-01 出版日期:2007-09-10 发布日期:2007-09-10
  • 通讯作者: 王晓冬

Preparation of SiO2 Ordered Macroporous Material by Floating Assembly Method

WANG Xiao-Dong*, YI Gui-Yun   

  1. Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
  • Received:2007-03-30 Revised:1900-01-01 Online:2007-09-10 Published:2007-09-10
  • Contact: WANG Xiao-Dong

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摘要： 用漂浮组装方法以亚微米尺度单分散的聚苯乙烯(PS)微球作为模板, 在悬浮液气-液界面处组装PS模板微球与纳米级胶体颗粒, 形成二元胶体颗粒共混物, 再去除模板得到有序大孔材料.

关键词: 有序大孔材料, 漂浮法, SiO2颗粒, 聚苯乙烯微球

Abstract: Floating assembly method is a new way for preparing ordered macroporous materials. In this process, the co-mixture of binary colloidal particles was fabricated through the rapid assembly of polystyrene(PS) as a template and SiO2 nanoparticles at the air-water interface of the suspension, the ordered macroporous materials were obtained by removing the template. Scanning Electron Micrographs(SEM) show that macroporous material had regular close-packed face-centered cubic(fcc) structure and spaces left by templates were connected through some windows. The results indicate that the formation of ordered porous structure was influenced by the diameter of PS microspheres remarkably. When the diameter was in the range of 200—500 nm the ordered structure could be obtained easily. And the volume ratio of PS microspheres to SiO2 nanoparticles in the maxed suspension wasn't primary factor of the the formation of the ordered structure.

Key words: Ordered macroporous materials, Floating assembly method, SiO2 nanoparticle, Polystyrene microsphere

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