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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

仿生制备非担载SiO2无机膜的实验研究

朱丽; 王一平; 胡彤宇; 李韡   

  1. 天津大学化工学院 天津 300072
  • 收稿日期:2003-04-03 修回日期:2003-06-05 出版日期:2004-05-20 网络出版日期:2004-05-20

Experimental Study on Biomimetic Synthesizing Silica Films at the Air-water Interface

ZHU Li; WANG Yi-Ping; HU Tong-Yu; LI Wei   

  1. School Of Chemical Engineering; Tianjin University; Tianjin 300072; China
  • Received:2003-04-03 Revised:2003-06-05 Published:2004-05-20 Online:2004-05-20

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摘要： 以正硅酸乙酯(TEOS)为硅源,十六烷基三甲基溴化铵(CTAB)为有机模板,利用仿生合成技术于气-液界面制备出非担载的SiO2无机膜.考察了仿生制备SiO2膜过程中TEOS和CTAB的初始浓度及溶液pH值对膜质量的影响,并在优化所得物料条件下考察了干燥添加剂丙二醇和灼烧条件对膜质量的影响.各种分析和表征结果说明制备出的SiO2仿生膜具有1.8nm的最可几孔径,且上表面光滑平整.

关键词: 仿生合成, SiO2膜, 无机膜, 复合材料

Abstract: Free-standing silica films were prepared repeatedly at the air-water interface by the biomimetic
synthesis technology, during which the hydrolysis of tetraethyoxysilane (TEOS) was directed by cetyltrimethylammonium bromide (CTAB) supra-molecules
assemblies. The effects of material ratio, calcining conditions and DCCA(drying control chemical agent) on the qualities of silica films
were investigated. The various characterization results showed that the biomimetic synthesized silica film has a modal pore diameter of 1.8nm and
thickness of about 2μm, its upper surface is smooth and integral.

Key words: biomimetic synthesis, silica film, inorganic membrane, composite materials

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