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Manganese tetroxide (Mn3O4) nanofibers were prepared by electrospinning homogeneous viscous solution of 20 wt%, 28 wt% and 36 wt% manganese acetate in poly vinyl alcohol (PVA) and calcining the nanofibers at 1000 ℃ for 2 h. Electrospinning was carried out at 9 kV DC with tip to collector distance (TCD) of 7 cm. Thermo gravimetric analysis (TGA) of the fibers indicates the pure phase of manganese oxide above 500 ℃. XRD analysis of calcined (at 1000 ℃) nanofibers indicates the formation of phase-pure tetragonal Mn3O4. Scanning electron microscopy (SEM) studies show the fibers cylindrical with the diameters in the range of 100–600 nm and aspect ratio > 1000. In general, the average diameter of the green fibers decreases with the increase in manganese acetate concentration. The diameter of calcined nanofibers is reduced by 34%.


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Synthesis and characterization of manganese tetroxide (Mn3O4) nanofibers by electrospinning technique

Show Author's information Benudhar SAHOOPrasanta Kumar PANDA*( )
Materials Science Division, CSIR-National Aerospace Laboratories, Kodihalli, P. B. No. 1779, Bangalore 560017, India

Abstract

Manganese tetroxide (Mn3O4) nanofibers were prepared by electrospinning homogeneous viscous solution of 20 wt%, 28 wt% and 36 wt% manganese acetate in poly vinyl alcohol (PVA) and calcining the nanofibers at 1000 ℃ for 2 h. Electrospinning was carried out at 9 kV DC with tip to collector distance (TCD) of 7 cm. Thermo gravimetric analysis (TGA) of the fibers indicates the pure phase of manganese oxide above 500 ℃. XRD analysis of calcined (at 1000 ℃) nanofibers indicates the formation of phase-pure tetragonal Mn3O4. Scanning electron microscopy (SEM) studies show the fibers cylindrical with the diameters in the range of 100–600 nm and aspect ratio > 1000. In general, the average diameter of the green fibers decreases with the increase in manganese acetate concentration. The diameter of calcined nanofibers is reduced by 34%.

Keywords:

electrospinning, manganese tetroxide, poly vinyl alcohol, nanofiber
Received: 20 November 2012 Revised: 27 December 2012 Accepted: 30 December 2012 Published: 06 April 2013 Issue date: March 2013
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Publication history
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Publication history

Received: 20 November 2012
Revised: 27 December 2012
Accepted: 30 December 2012
Published: 06 April 2013
Issue date: March 2013

Copyright

© The author(s) 2013

Acknowledgements

The authors are grateful to SEM group and Dr. Anjana Jain from materials science division for their help in taking SEM micrographs and XRD patterns of nanofibers respectively. The authors also thank Dr. Vanaja from CSMST division for TGA. The authors express their sincere gratitude to the leader of materials science division and the director of NAL for their support and encouragement during the course of this study.

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