Magnesium hydroxide dehydroxylation: In situ nanoscale observations of lamellar nucleation and growth

M. J. McKelvy, R. Sharma, Andrew Chizmeshya, Ray Carpenter, K. Streib

Research output: Contribution to journalArticle

95 Scopus citations

Abstract

Lamellar dehydroxylation mechanisms are important in understanding highly reactive nanocrystal oxide formation as well as a variety of applied lamellar hydroxide reaction processes. These mechanisms have been observed for the first time via in situ nanoscale imaging for the prototype lamellar hydroxide: Mg(OH)2. Environmental-cell, dynamic high-resolution transmission electron microscopy was combined with advanced computational modeling in discovering that lamellar nucleation and growth processes govern dehydroxylation. The host lamella can guide the formation of a solid solution series of lamellar oxyhydroxide intermediates en route to oxide formation. This investigation opens the door to a deeper, atomic-level understanding of lamellar dehydroxylation reaction processes, nanocrystal oxide formation, and the range of potential new intermediate materials and third component reaction pathways they can provide.

Original languageEnglish (US)
Pages (from-to)921-926
Number of pages6
JournalChemistry of Materials
Volume13
Issue number3
DOIs
StatePublished - Sep 26 2001

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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