Synthesis of mesoporous silica spheres by using neutral-cationic surfactant and semi-batch growth

Jian Quan Qiu, Xiang Zhao, Min Chao Jin, Qiang Cai, Heng De Li

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)558-564
Number of pages7
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume21
Issue number3
StatePublished - May 2006

Keywords

  • Mesoporous
  • Semi-batch
  • Silica spheres
  • Surfactant

ASJC Scopus subject areas

  • Materials Science(all)
  • Inorganic Chemistry

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