Abstract
A one-step synthesis of mono-dispersed mesoporous silica spheres by using the mixed surfactants CTAB and dodecylamine proceeded with the hydrolysis and condensation of tetraethylorthosilicate (TEOS) in a mixture of alcohol, isopropyl alcohol, water, and ammonia as a catalyst. The silica spheres have high specific surface area and can be used as a good substrate in high performance liquid chromatography (HPLC). The size of 0.2-1.5 μm and morphology of the silica spheres can be controlled by varying the proportion of surfactant and co-solvent. The prepared silica spheres can be enlarged to the maximum diameter 3 μm with a seeded growth method in a semi-batch reacting system. Based on the experiments above, several mechanisms were discussed on the growth process of mesoporous silica spheres in the synthesis.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 558-564 |
| Number of pages | 7 |
| Journal | Wuji Cailiao Xuebao/Journal of Inorganic Materials |
| Volume | 21 |
| Issue number | 3 |
| State | Published - May 2006 |
Keywords
- Mesoporous
- Semi-batch
- Silica spheres
- Surfactant
ASJC Scopus subject areas
- General Materials Science
- Inorganic Chemistry