Effect of Preparative Parameters on Structural, Optical and Electrical Properties of Mn2O3 Nano Particles Prepared Via Microwave Assisted Technique

Authors

  • L. Jayaselvan  Physics Research Centre, S.T. Hindu College, Nagercoil, Tamilnadu, India
  • C. Gnana Sambandam  Physics Research Centre, S.T. Hindu College, Nagercoil, Tamilnadu, India
  • C. Ravidhas  Postgraduate and Research Department of Physics, Bishop Heber College (Autonomous), Tiruchirapalli, Tamilnadu, India
  • A. Moses Ezhil Raj  Department of Physics & Research Centre, Scott Christian College (Autonomous) Nagercoil, Tamilnadu, India

Keywords:

Microwave synthesis, Mn2O3, XRD, FTIR, optical and electrical

Abstract

In the present investigation Mn2O3 nanoparticles were prepared by microwave assisted co-precipitation method using MnCl2 and NaOH precursors. Obtained nanoparticles were characterized using X-ray powder diffraction (XRD) for the confirmation of Mn2O3 formation with cubic structure. Nelson – Riley and William – Hall plots were constructed to estimate the lattice parameter, crystalline size and microstrain precisely. Variations in Structural parameters with preparative conditions was discussed and analyzed. Metal-oxide phase formation was confirmed from the bands in the specified finger print region of FTIR spectra of metal oxides. Scanning electron microscopy (SEM) micrographs revealed the reducing agent dependent morphology of particles, size and its distribution. Optical absorption measurements were used to obtain the band gap by nothing the absorption edge in the lower wavelength region and its dependence to preparative parameters was identified. Electrical conductivity and its variations with temperatures were used to evaluate the activation energy and temperature co-efficient of resistance.

References

    1. Cavicchi, R.E., Silsbe, R.H., ???Coulomb Suppression of Tunneling Rate from Small Metal. Particles???, Physical review letters, 52, April 1984, pp. 1453-1456.
    2. Ball, p., Garwin, L., ???Science at the atomic scale???, Nature, 355, 1992, 761???766.
    3. Rao, C.N.R., Vivekchand, S.R.C., Biswas, K., Govindaraj, A., ???Synthesis of inorganic nanomaterials???, Dalton Transactions, July 2007, pp. 3728???3749.
    4. Chen, Y., Zhang, Y., Qi-Zhi Yao, Gen-Tao Zhou, Fu, S., Fan, H., ???Formation of ??-Mn2O3 nanorods via a hydrothermal-assisted cleavage-decomposition mechanism???, Journal of Solid State chemistry, 180, April 2007, pp. 1218-1223L.
    5. Wang, Z., Ebina, Y., Takada, K., Sasaki, T., ???Ultrathin hollow nanoshells of manganese oxide??? Chemical Communication., 8, 2004, pp. 1074???1075.
    6. Zhang, Z.L., Du, G.H, Ren, T.Z., Su, B.L., ???A simple method to synthesise single-crystalline manganese oxide nanowires???, Chemical Physics Letters, 378, September 2003, pp. 349-353.
    7. Lei, S.J., Tang, K.B., Fang, Z., Liu, Q.C., Zheng, H.G.,???Preparation of ??-Mn2O3 and MnO from thermal decomposition of MnCO3 and control of morphology???, Materials Letters, 60, January 2006, pp. 53???56.
    8. Li, W.N., Zhang, L.C., Sithambaram, S., Yuan, J.K., Shen, X.F., Aindow, M., Suib, S.L., ???Shape Evolution of Single-crystalline Mn2O3 Using a Solvothermal Approach???, The Journal of Physical Chemistry C, 111, September 2007, pp.14694???14697.
    9. Subhash T., Bhagwati P., Jitendra K., ???Formation and magnetic behaviour of manganese oxide nanoparticles???, Materials Science and Engineering: B, 167, March 2010, pp. 153-160
    10. L. Liu, Z. Yang, H. Liang, H. Yang, Y. Yang, ???Facile synthesis of MnCO3 hollow dumbbells and their conversion to manganese oxide???, Materials Letters, 64, October 2010, pp. 891???893.
    11. Cao, J., Zhu, Y., Bao, K., Shi, L., Liu, S., Qian, V., ???Microscale Mn2O3 Hollow Structures: Sphere, Cube, Ellipsoid, Dumbbell, and Their Phenol Adsorption Properties???, The Journal of Physical Chemistry C., 113, September 2009, pp. 17755???17760.
    12. Tsang, C., Kim, J., Manthiram, A., ???Synthesis of Manganese Oxides by Reduction of KMnO4 with KBH4in Aqueous Solutions???, Journal of Solid State Chemistry, 137, April 1998, pp. 28???32.
    13. Ahmad, T., Ramanujachary, K.V., Lofland, S.E., Ganguli, A.K., ???Nanorods of manganese oxalate: a single source precursor to different manganese oxide nanoparticles (MnO, Mn2O3, Mn3O4)???, Journal of Materials Chemistry, 14, December 2004, pp. 3406???3410.
    14. Masoud Salavati-Niasari, Fatemeh Mohandes, Fatemeh Davar, Kamal Saberyan, ???Fabrication of chain-like Mn2O3 nanostructures via thermal decomposition of manganese phthalate coordination polymers???, Applied Surface Science., 256, December 2009, pp. 1476???1480.
    15. Sadtler Research Laboratories, INC, Inorganics IR Grating Spectra, Philadelphia, PA 19104, USA, 3???5 (1972) Y1173K.
    16. Chen, Z.W., Lai, J.K.L., Shek, C.H., ???Influence of grain size on the vibrational properties in Mn2O3 nanocrystals???, J. Non-Crystalline Solids, 352 September 2006, pp.?? 3285???3289.
    17. Siti Aida Ibrahim, Srimala Sreekantan, Proceedings of ICXRI 2010, International Conference on X-Rays & Related Techniques in Research & Industry June 9 ??? 10, 2010, Aseania Resort Langkawi, Malaysia.
    18. http://physics.mipt.ru/S 111/t

International Journal of Scientific Research in Science and Technology

Downloads

Published

2017-12-15

Issue

Volume 3, Issue 11, November-December-2017

Section

Research Articles

License

Copyright (c) IJSRST

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
L. Jayaselvan, C. Gnana Sambandam, C. Ravidhas, A. Moses Ezhil Raj, " Effect of Preparative Parameters on Structural, Optical and Electrical Properties of Mn2O3 Nano Particles Prepared Via Microwave Assisted Technique, International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 3, Issue 11, pp.106-113, November-December-2017.