Microwave-assisted synthesis of molybdenum oxide nanoparticles

Document Type: Research Paper

Authors

1 tarbiat modares university

2 Department of Engineering, Nanomaterial Group, Tarbiat Modares University

3 Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran.

Abstract

This paper focused on a simple approach for synthesis of molybdenum oxide (MoO3) nanoparticles and reports a facile route for synthesis of such nanoparticles, using microwave irradiation as a homogenous and powerful source of heating, using ethylene glycol as the solvent and heating medium. For more investigations, besides microwave heating, the obtained solutions were also treated by conventional heating. Finally, product particles were characterized and compared using scanning electron microscopy (SEM) and energy dispersive x-ray microanalysis (EDX). According to the results, microwave irradiated particles showed a good dispersion and stability in relation to the other sample. So, the obtained product was subjected to X-ray diffraction (XRD) analysis to survey the formation of MoO3 nanoparticles. The transmission electron microscope (TEM) micrographs were also recorded to study the size and morphology of the nanoparticles. According to the results, nanoparticles were spherical with an average size of about 50 nm. The absorbance spectrum of MoO3 nanoparticles was further studied using the UV-spectroscopy and the absorbance peak was observed at 257nm.

Keywords