Characteristics of ZnO nanostructures produced with [DMIm]BF{sub 4} using ultrasonic radiation

Journal Article · Tue Nov 27 00:00:00 EST 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4769157· OSTI ID:22075855

Rahman, I B. Abdul; Ayob, M T. M.; Ishak, I S; Mohd Lawi, R L; Othman, N K; Radiman, S ^[1]

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1. School of Applied Physics, Faculty of Science and Technology (FST), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan (Malaysia)

Great interests in metallic oxides have emerged because of the promising properties of these materials for various applications such as solar cells and sensors. ZnO nanostructures with different morphologies were successfully synthesized from Zn(CH{sub 3}COO){sub 2} Bullet 2H{sub 2}O, NaOH and room temperature ionic liquid (RTIL) 1-decyl-3-methylimidazolium tetrafluoroborate, [DMIm][BF{sub 4}] with ultrasound irradiation. Parameters such as the effect of sonication time (30, 60 and 90 minutes) and Zn(Ac){sub 2} precursor to [DMIm][BF{sub 4}] ratios of 3:5, 5:5 and 5:3 were investigated. X-ray diffraction patterns revealed that the ZnO nanocrystals were hexagonal zincite crystalline in structure. The band gap energies (E{sub g}) were estimated to be 3.35-3.55 eV from the UV-Visible spectrum. The solution with the highest ratio of Zn was analysed with photoluminescence spectroscopy, which exhibited peaks at 362, 403, 468 and 539 nm, at room temperature. The micrographs of field emission scanning electron microscopy and transmission electron microscopy showed that the synthesis products were spherical (30-60 nm), spindle ({approx}10 Multiplication-Sign 70 nm for width Multiplication-Sign length) and whisker-like (100-200 nm), with their dimensions decreasing systematically with increased sonication time. Chemical compositions were approximated at 1:1 for Zn and O, estimated by electron dispersive x-ray spectrum.

• OSTI ID: 22075855
• Journal Information: AIP Conference Proceedings, Vol. 1502, Issue 1; Conference: ICONT 2011: International conference on nanotechnology - Research and commercialization 2011, Sabah (Malaysia), 6-9 Jun 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CRYSTAL STRUCTURE
EMISSION SPECTROSCOPY
ENERGY GAP
FIELD EMISSION
FLUOROBORATES
IRRADIATION
MOLTEN SALTS
NANOSTRUCTURES
ORGANIC COMPOUNDS
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
SODIUM HYDROXIDES
TRANSMISSION ELECTRON MICROSCOPY
ULTRASONIC WAVES
ULTRAVIOLET SPECTRA
X-RAY DIFFRACTION
X-RAY SPECTRA
ZINC OXIDES