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Low Temperature Synthesis of Hexagonal Shaped [alpha]-Al 2O 3Using a Solvothermal Method

Journal of nanomaterials, 2012-01, Vol.2012 [Peer Reviewed Journal]

Copyright © 2012 A-Young Kim et al. A-Young Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ;ISSN: 1687-4110 ;EISSN: 1687-4129 ;DOI: 10.1155/2012/907503

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  • Title:
    Low Temperature Synthesis of Hexagonal Shaped [alpha]-Al 2O 3Using a Solvothermal Method
  • Author: A-Young, Kim ; Kim, Hyun Soo ; Park, No-Kuk ; Tae Jin Lee ; Won Gun Lee ; Heun Duk Kim ; Jun Woo Park ; Kang, Misook
  • Subjects: Alumina ; Atoms & subatomic particles ; Grain size ; High temperature ; Methods ; Microscopy ; Semiconductors ; Surface chemistry
  • Is Part Of: Journal of nanomaterials, 2012-01, Vol.2012
  • Description: This study demonstrates the low temperature synthesis of α-Al2O3by solvothermal method using gibbsite alumina precursor in 1, 4-butanediol solvent according to various pH conditions. In acidic solution, an orthorhombic boehmite (AlOOH) structure was obtained after solvothermal reaction. A significant result in this study was that the solvothermally synthesized alumina in pH =9 at 300 °C for 36 h represented a rhombohedral α-Al2O3structure hexagonal shaped with about 1.5 ~2.0 μm of particle size. Otherwise, the α-Al2O3structure was rather changed to the mixture of a boehmite and α-Al2O3structures above pH =11 . In the case of α-Al2O3synthesized at pH =9 , the specific surface area was 26.18 m2/g, and the particles that were stable in acidic solution resulted in 61.80 mV of zeta potential.
  • Publisher: New York: Hindawi Limited
  • Language: English
  • Identifier: ISSN: 1687-4110
    EISSN: 1687-4129
    DOI: 10.1155/2012/907503
  • Source: ProQuest Central
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