PERTANIKA JOURNAL OF TROPICAL AGRICULTURAL SCIENCE

 

e-ISSN 2231-8542
ISSN 1511-3701

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Observation of Cotton-like Bismuth Oxide (β-Bi2O2.5) Prepared via Pulsed Laser Ablation Deposition

Samaila Bawa Waje, Noorhana Yahya and Irmawati

Pertanika Journal of Tropical Agricultural Science, Volume 17, Issue 2, July 2009

Keywords: Nanostructures, thin film, laser ablation, X-ray diffraction

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Monoclinic bismuth oxide (α-Bi2O3) nanoparticles were prepared via precipitation method and irradiated with a pulsed laser forming thin films. Their phase and surface morphological properties were investigated using x-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HR-TEM). The XRD analysis shows the phase transformation to a partially crystalline tetragonal phase β-Bi2O3 thin film. The SEM micrograph of the nanoparticles, with an average crystal size of 72 nm, was seen to form a thin film with a peculiar structure, coined as “cotton-like”, is attributed to the high surface energy absorbed by the nanoparticles during ablation. The HR-TEM micrograph shows the particulate with a clearly defined interlayer spacing.

ISSN 1511-3701

e-ISSN 2231-8542

Article ID

JST-0081-2008

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