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Effect of CTAB Concentration on the Morphology of Manganese Oxide Nanostructures

B. D. Biswas1, M. D. Purkayastha1 and T. Pal Majumder1*

1Department of Physics, University of Kalyani, Kalyani-741235, West Bengal, INDIA.


In this work, the effect of concentration of cetyltrimethylammonium bromide (CTAB) in the synthesis of manganese oxide (Mn2O3) nanostructures has been investigated adopting the hydrothermal route. The products were characterized by XRD, infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). XRD confirming the formation of Mn2O3 shows an intense diffraction peak at 36 with lattice plane (2 0 3). The IR spectra shows characteristic peaks at 489, 612 cm-1 corresponding to O-Mn-O bonds. With the increase in CTAB amounts from 20 mg to100 mg, the morphology changes from spherical to rod-like. Change in morphology could presumably lead to change in properties and make Mn2O3 nanostructures ideal candidates for photocatalytic, supercapacitor, battery and fuel cell applications.

Keywords : CTAB; Morphology; Manganese oxides; Nanostructures; Optical behavior.