Sonochemical synthesis and characterization of Co3O4 nanocrystals in the presence of the ionic liquid [EMIM][BF4]

Lamya Mohammed Al-Qirby, Shahidan Radiman, Chiu Wee Siong, Ameen M. Ali

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

For the first time, a sonochemical process has been used to synthesis cobalt oxide Co3O4 nanoflowers and nanorods morphology in the presence of the ionic liquid 1-Ethyl-3-methylimidazolium tetrafluoroborate [EMIM][BF4] as reaction media and morphology template. Different sonication time periods and different molar ratios of the ionic liquid (IL) were used to investigate their effects on the structural, optical, chemical and magnetic properties of the produced Co3O4 nanoparticles. During synthesis process brown powder contains cobalt hydroxide Co(OH)2 and cobalt oxyhydroxide (Cobalt hydroxide oxide) CoO(OH) was formed, after calcination in air for 4h at 400C a black powder of Co3O4 nanoparticles was produced. The produced Co3O4 nanoparticles properties were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), transmission electron microscopy (TEM), FTIR spectroscopy, UV-vis spectroscopy, and Vibrating Sample Magnetometer (VSM). To explain the formation mechanism of Co3O4 NPs some investigations were carried on the brown powder before calcination.

Original languageEnglish
JournalUltrasonics Sonochemistry
DOIs
Publication statusAccepted/In press - 7 Apr 2016

Fingerprint

Ionic Liquids
Ionic liquids
Powders
Nanoparticles
Nanocrystals
Cobalt
nanocrystals
cobalt
Calcination
roasting
nanoparticles
hydroxides
Spectrum Analysis
synthesis
liquids
Nanoflowers
Nanotubes
Sonication
cobalt oxides
Magnetometers

Keywords

  • Cobalt oxide
  • Ionic liquids
  • Nanoflowers
  • Nanorods
  • Sonochemical method

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics

Cite this

Sonochemical synthesis and characterization of Co3O4 nanocrystals in the presence of the ionic liquid [EMIM][BF4]. / Al-Qirby, Lamya Mohammed; Radiman, Shahidan; Siong, Chiu Wee; Ali, Ameen M.

In: Ultrasonics Sonochemistry, 07.04.2016.

Research output: Contribution to journalArticle

Al-Qirby, Lamya Mohammed ; Radiman, Shahidan ; Siong, Chiu Wee ; Ali, Ameen M. / Sonochemical synthesis and characterization of Co3O4 nanocrystals in the presence of the ionic liquid [EMIM][BF4]. In: Ultrasonics Sonochemistry. 2016.
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