Synthesis and characterization of nanowires Hausmannite (Mn3O4) by solid-state thermal decomposition

Document Type : Reasearch Paper

Authors

• A. A. Dehno Khalaji
• F. Malekan

Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran.

10.7508/ijnd.2015.02.005

Abstract

In this study, we synthesis one-dimensional (1D) manganese(III) Schiff base coordination polymer [Mn(Brsalophen)(μ_1,3-N₃)]_n by reaction of MnCl₂·6H₂O and tetradentate Schiff base ligand Brsalophen at the presence of NaN₃ in methanol and characterized by elemental analyses (CHN) and FT-IR spectroscopy. It was used as a new precursor to prepare spinel type manganese oxide nanowires by a facile solid-state thermal decomposition in air at 400ºC for 3.5 h. The crystallinity, purity and morphology of the Mn₃O₄ products were characterized by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The powder X-ray diffraction and scanning electron microscopy confirmed that the prepared Mn₃O₄ nanowires are pure single phases. The present method allows preparation of the Mn₃O₄ nanowires without expensive or toxic organic solvent and complicated equipment. The nanowires have a diameter about ≈25 nm and length exceeding 1.5 μm. It has potential to be applied as a general method for preparation of other transition metal oxide nanoparticles.

Keywords

• Manganese (III)
• nanowires
• Thermal decomposition
• XRD
• SEM

20.1001.1.20088868.2015.6.2.5.0

Main Subjects

• Nanochemistry
• Nanomaterial

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