Adsorbate effects on glycothermally produced α-alumina particle morphology

Nelson S. Bell, James Hansell Adair

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

α-Alumina particles were precipitated in 1,4-butanediol at constant temperature and stirring rate for 36 h. Adsorbates were added to determine their effect on particle morphology and nucleation. Degradation of the solvent was characterized and evaluated for morphological effect. The addition of hydroxyl ions promoted the formation of plate-like morphologies by increasing the growth rates perpendicular to the basal plane. Acetic acid demonstrated preferential adsorption to the {1 1 2̄ 2} habit plane without affecting nucleation kinetics. Strong adsorption by pyridine stabilized a plate-like morphology, but affected nucleation kinetics to inhibit the formation of a monosized powder. The effect of solvent degradation products and water upon morphological development is unresolved.

Original languageEnglish (US)
Pages (from-to)213-226
Number of pages14
JournalJournal of Crystal Growth
Volume203
Issue number1
DOIs
StatePublished - Jan 1 1999

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Aluminum Oxide
Adsorbates
Nucleation
Alumina
aluminum oxides
nucleation
degradation
Adsorption
Degradation
Kinetics
adsorption
habits
kinetics
stirring
acetic acid
Acetic acid
Acetic Acid
Pyridine
Powders
pyridines

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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Adsorbate effects on glycothermally produced α-alumina particle morphology. / Bell, Nelson S.; Adair, James Hansell.

In: Journal of Crystal Growth, Vol. 203, No. 1, 01.01.1999, p. 213-226.

Research output: Contribution to journalArticle

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