Facile route for preparation of highly crystalline γ-Al 2O 3 nanopowder

M. Sasani Ghamsari, Z. Ashor Said Mahzar, Shahidan Radiman, Muhammad Azmi Abdul Hamid, Sh Rahmani Khalilabad

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In this study, the sol-gel technique has been used to synthesize highly crystalline γ-alumina. Aluminum chloride, ethanol, and water were selected for sol-gel process and a facile route has been developed to prepare the nanocrystalline γ-aluminum hydroxide (gibbsite). FTIR and X-ray diffraction were used to identify the organic compounds of prepared sol and the crystallographic phase of synthesized powders. Scanning electron microscopy (SEM) studies were carried out to show the morphology of prepared powders. The phase transformation from gibbsite to gamma-alumina has been evaluated by annealing of the prepared sample at different temperatures. The aging process has highly affected the degree of crystallinity of γ-alumina. Experimental results confirmed that the phase transformation from gibbsite to gamma-alumina has been started at low temperature (≤200 °C) and highly crystalline γ-alumina was obtained at 1000 °C.

Original languageEnglish
Pages (from-to)32-35
Number of pages4
JournalMaterials Letters
Volume72
DOIs
Publication statusPublished - 1 Apr 2012

Fingerprint

Aluminum Oxide
Alumina
aluminum oxides
routes
Crystalline materials
preparation
Powders
phase transformations
Phase transitions
aluminum chlorides
Aluminum Hydroxide
Aluminum chloride
Hydrated alumina
Polymethyl Methacrylate
sol-gel processes
Sols
organic compounds
Organic compounds
Sol-gel process
hydroxides

Keywords

  • γ-Alumina
  • Nanocrystalline materials
  • Nanoparticles
  • Sol-gel preparation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Facile route for preparation of highly crystalline γ-Al 2O 3 nanopowder. / Ghamsari, M. Sasani; Mahzar, Z. Ashor Said; Radiman, Shahidan; Abdul Hamid, Muhammad Azmi; Khalilabad, Sh Rahmani.

In: Materials Letters, Vol. 72, 01.04.2012, p. 32-35.

Research output: Contribution to journalArticle

Ghamsari, M. Sasani ; Mahzar, Z. Ashor Said ; Radiman, Shahidan ; Abdul Hamid, Muhammad Azmi ; Khalilabad, Sh Rahmani. / Facile route for preparation of highly crystalline γ-Al 2O 3 nanopowder. In: Materials Letters. 2012 ; Vol. 72. pp. 32-35.
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