Porous silica by the sol-gel process

Lisa Klein, R. H. Woodman

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

In order to prepare porous silica that is mesoporous or microporous, the sol-gel process is recommended. Unlike methods that require high temperatures, the sol-gel process produces porous silica more or less at room temperature. The process involves the hydrolysis and polycondensation of silicon alkoxides in the majority of cases. Colloidal silica and soluble silicates may be used as well. The processing parameters that influence the porosity are primarily the pH and aging. Applications using porous silica to encapsulate sensor molecules and enzymes are developing rapidly.

Original languageEnglish (US)
Pages (from-to)109-124
Number of pages16
JournalKey Engineering Materials
Volume115
Publication statusPublished - Dec 1 1996

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Mesoporous silica
  • Microporous silica
  • Silica gel
  • Sol-gel processing
  • Tetraethylorthosilicate

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