Recent developments in morphological control of α-Al2O3particles synthesized in 1,4-butanediol solution

James Hansell Adair, Seung Beom Cho, Nelson S. Bell, Anthony J. Perrotta

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Direct precipitation of metal oxides from high boiling point organic solvents presents an alternative to wholly aqueous hydrothermal material synthesis routes. In the current study, reaction conditions to control particle size and shape of α-alumina, precipitated from 1,4-butanediol solutions are described. Synthesis variables including reaction time, stirring speed, amount of methanol, and solid loading have a strong effect on the size and shape of α-alumina synthesized in 1,4-butanediol solutions conditions to prepare α-alumina crystals with different habits including circular platelets, hexagonal platelets, hexagonal platelets with habit modifications on the edges, dodecahedra, polyhedra with 14 faces, polyhedra with 20 faces, hexagonal prisms, and hexagonal prisms with habit modifications on the edges are presented. Possible growth mechanisms of α-Al2O3particles in 1,4-butanediol solution are proposed based on theoretical shape and atomic surface structure generated with programs SHAPE©and ATOMS©. The results of this study indicate that it is possible to control the morphology of synthesized α-alumina particles by controlling the process conditions, and theoretical predictions of crystal shapes can be reconciled to the morphology of the experimentally synthesized particles.

Original languageEnglish (US)
Pages (from-to)143-165
Number of pages23
JournalJournal of Dispersion Science and Technology
Volume22
Issue number2-3
DOIs
StatePublished - Jan 1 2001

Fingerprint

Aluminum Oxide
habits
Alumina
aluminum oxides
Platelets
platelets
Prisms
polyhedrons
prisms
Crystals
Boiling point
stirring
synthesis
reaction time
Surface structure
boiling
Organic solvents
Oxides
crystals
metal oxides

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry
  • Polymers and Plastics

Cite this

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abstract = "Direct precipitation of metal oxides from high boiling point organic solvents presents an alternative to wholly aqueous hydrothermal material synthesis routes. In the current study, reaction conditions to control particle size and shape of α-alumina, precipitated from 1,4-butanediol solutions are described. Synthesis variables including reaction time, stirring speed, amount of methanol, and solid loading have a strong effect on the size and shape of α-alumina synthesized in 1,4-butanediol solutions conditions to prepare α-alumina crystals with different habits including circular platelets, hexagonal platelets, hexagonal platelets with habit modifications on the edges, dodecahedra, polyhedra with 14 faces, polyhedra with 20 faces, hexagonal prisms, and hexagonal prisms with habit modifications on the edges are presented. Possible growth mechanisms of α-Al2O3particles in 1,4-butanediol solution are proposed based on theoretical shape and atomic surface structure generated with programs SHAPE{\circledC}and ATOMS{\circledC}. The results of this study indicate that it is possible to control the morphology of synthesized α-alumina particles by controlling the process conditions, and theoretical predictions of crystal shapes can be reconciled to the morphology of the experimentally synthesized particles.",
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Recent developments in morphological control of α-Al2O3particles synthesized in 1,4-butanediol solution. / Adair, James Hansell; Cho, Seung Beom; Bell, Nelson S.; Perrotta, Anthony J.

In: Journal of Dispersion Science and Technology, Vol. 22, No. 2-3, 01.01.2001, p. 143-165.

Research output: Contribution to journalArticle

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