Preparation of silica aerogels using CTAB/SDS as template and their efficient adsorption
| Autor: | Zhuo Fanlu, Cao Mengjing, Mu Mingwei, Li Fengyun, Huang Jue, Zhang Weijun, Cai Qiang, Li Wa |
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| Rok vydání: | 2015 |
| Předmět: |
Apparent density
Materials science Inorganic chemistry Cationic polymerization General Physics and Astronomy Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films chemistry.chemical_compound Adsorption chemistry Pulmonary surfactant Chemical engineering Bromide Specific surface area Rhodamine B Sodium dodecyl sulfate |
| Zdroj: | Applied Surface Science. 353:1031-1036 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2015.06.204 |
| Popis: | Silica aerogels have been successfully synthesized using cationic cetyltrimethylammonium bromide (CTAB) and anionic sodium dodecyl sulfate (SDS) as template. This study provides a novel approach to synthesize silica aerogels. The molar ratio of surfactant mixture was CTAB/SDS = 1.00. The obtained silica aerogels exhibit very low apparent density (0.044 g cm −3 ) and high specific surface area (856 m 2 g −1 ). Surfactant packing parameter theory is used to explain the possible formation mechanism of the silica aerogels using mixed surfactant template. In addition, the adsorption capacity of Rhodamine B on the as-synthesized silica aerogels is as higher as that on the commercial silica aerogels. |
| Databáze: | OpenAIRE |
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