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Formation of δ-Al2O3 hollow nanoparticles via a chemical vapor condensation process

Dedicated to Prof. Fritz Aldinger on the occasion of his 65th birthday
  • Chang-Woo Lee and Jai-Sung Lee
Published/Copyright: May 23, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 98 Issue 1

Abstract

Aluminium oxide nanoparticles were synthesized by a chemical vapor condensation process using aluminium acetylacetonate as a precursor in the temperature range of 700 – 1000 °C. From X-ray diffraction results, it was found that the δ-Al2O3 phase was obtained at 900 °C and 1000 °C. Transmission electron microscopy observation revealed that δ-Al2O3 nanoparticles 10 – 15 nm in diameter consisted of a hollow structure with shells 2 – 3 nm in thickness. The sequential decomposition of acetylacetonate groups observed in thermogravimetry analysis showed that the formation of a hollow structure depends on the characteristics of the metal – organic precursor. Also, a decrease in the transmittance of δ-Al2O3 nanoparticles was found in the wavelength range of 300 – 900 nm by UV-Visible spectrophotometry, which is expected to occur by scattering and absorption of light depending on particle size and hollow structure.

Keywords: Nanoparticles; Hollow structure; Chemical vapor condensation; Metal acetylacetonate; Al2O3
* Correspondence address, Prof. Dr. Jai-Sung Lee Department of Metallurgy and Materials Science Hanyang University, Ansan 426-791, Korea Tel.: +82 31 400 5225 Fax: +82 31 406 5170 E-mail:

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Received: 2006-7-15
Accepted: 2006-11-9
Published Online: 2013-05-23
Published in Print: 2007-01-01

© 2007, Carl Hanser Verlag, München

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  5. Basic
  6. Synthesis and oxidation of Zr3Al3C5 powders
  7. Standard Gibbs energy of formation of Zn17Y2 and Zn12Y determined by solution calorimetry and measurement of heat capacity from near zero Kelvin
  8. Phase equilibria in the Zn–Fe–S system at 450°C
  9. Formation of δ-Al2O3 hollow nanoparticles via a chemical vapor condensation process
  10. Low-cycle fatigue and damage of an uncoated and coated single crystal nickel-base superalloy SCB
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  14. Influence of interfaces on the mechanical properties of ultrahigh carbon steel multilayer laminates
  15. Thermomechanical processing of AA6061 billets for semi-solid forming
  16. Infrared spectroscopy and X-ray diffraction data of In – Se compounds
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  19. Notifications
  20. DGM News
https://doi.org/10.3139/146.101436
Keywords for this article
Nanoparticles; Hollow structure; Chemical vapor condensation; Metal acetylacetonate; Al2O3

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Synthesis and oxidation of Zr3Al3C5 powders
  7. Standard Gibbs energy of formation of Zn17Y2 and Zn12Y determined by solution calorimetry and measurement of heat capacity from near zero Kelvin
  8. Phase equilibria in the Zn–Fe–S system at 450°C
  9. Formation of δ-Al2O3 hollow nanoparticles via a chemical vapor condensation process
  10. Low-cycle fatigue and damage of an uncoated and coated single crystal nickel-base superalloy SCB
  11. Fluidity of Mg–Al–Ca alloys in the high-pressure die casting process
  12. Applied
  13. Mechanical properties of rope-reinforced aluminium extrusions under quasistatic loading conditions
  14. Influence of interfaces on the mechanical properties of ultrahigh carbon steel multilayer laminates
  15. Thermomechanical processing of AA6061 billets for semi-solid forming
  16. Infrared spectroscopy and X-ray diffraction data of In – Se compounds
  17. Synthesis and characterization of MgAlON–BN composites
  18. Neutron diffraction residual stress analysis of steel engineering components: a study of the elastic and plastic anisotropy
  19. Notifications
  20. DGM News
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