Preparation and thermal behavior of CaCO3/SiO2 nanocomposite

Ladislav Pach, Zdenek Hrabe, Stefan Svetik, Sridhar Komarneni

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The preparation of CaCO3 from a supersaturated solution of Ca(HCO3)2 in a microwave oven was studied at 25°C and pH of ∼7.1 and 7.3, with and without colloidal SiO2 as an additive. SiO2 particles controlled the nucleation, size, and shape of crystals and were incorporated into the CaCO3/SiO2 nanocomposite. Incorporation of SiO2 increased with increased SiO2 addition into the solution and with increased rate of precipitation. Heating the above nanocomposite precipitate led to crystallization of calcium silicate at a low temperature of 450°C, due to intimate contacts of CaCO3 and SiO2 in the Composite.

Original languageEnglish (US)
Pages (from-to)1653-1660
Number of pages8
JournalMaterials Research Bulletin
Volume33
Issue number11
DOIs
StatePublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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