Synthesis of porous hollow silica spheres using polystyrene–methyl acrylic acid latex template at different temperatures
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- 作者：Chen Ge ; Dongzhi Zhang ; Aili Wang ; Hengbo Yin ; Min Ren ; Yumin Liu ; Tingshun Jiang ; Longbao Yu
- 关键词：A. Microporous materials ; A. Nanostructures ; B. Chemical synthesis ; C. Electron microscopy ; C. Infrared spectroscopy
- 刊名：Journal of Physics and Chemistry of Solids
- 出版年：2009
- 出版时间：November 2009
- 年：2009
- 卷：70
- 期：11
- 页码：1432-1437
- 全文大小：548 K
文摘
Porous hollow silica spheres were prepared by using polystyrene–methyl acrylic acid latex as a template and cetyltrimethylammonium bromide as a wall structure-directing agent starting from tetraethoxysilane. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), FT-infrared spectroscopy (FT-IR) and nitrogen adsorption/desorption were used to characterize the hollow silica spheres. When silica-coated latex composites were prepared at room temperature, hollow silica spheres with micropores in the walls were formed after removing the latex templates by calcination. When silica-coated latex composites were aged at a higher temperature of 150 °C, intact mesoporous hollow silica spheres were formed after calcination treatment.