Oxide and metal intercalated clay nanocomposites

P. B. Malla, S. Komarneni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Truly nanocomposite materials that are stable to about 400 to 700 °C can be prepared by intercalating oxides or metal clusters of about 0.4 to 2.0 nm in between approximately 1.0 nm layers of smectite clays. Both the chemistry and size of intercalates (pillars) can be varied to introduce unique catalytic, molecular sieving, dehumidifying and adsorption properties in these materials. The intercalated clays also provide opportunities to prepare compositionally and stoichiometrically diverse nanocomposite precursors to high temperature structural and electronic ceramics. Although montmorillonite is the most widely used host, further designing in properties can be achieved by using other members of smectite family having subtle crystal chemical and compositional variations, such as beidellite, nontronite, saponite or hectorite. The sol-gel chemistry involving the preparation of positively charged mono- or multiphasic solution-sol or colloidal-sol particles is a viable approach to introduce chemically diverse oxide particles in the interlayers of smectite. Reduction of transition metal ions or complexes in the interlayers of smectite to zerovalent metal clusters/particles using polar liquids is another novel approach to develop catalytically active, high surface area materials.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherPubl by Materials Research Society
Pages323-334
Number of pages12
ISBN (Print)1558991816
StatePublished - Jan 1 1993
EventProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials - Boston, MA, USA
Duration: Nov 30 1992Dec 3 1992

Publication series

NameMaterials Research Society Symposium Proceedings
Volume286
ISSN (Print)0272-9172

Other

OtherProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials
CityBoston, MA, USA
Period11/30/9212/3/92

All Science Journal Classification (ASJC) codes

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

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