Kalaiselvan, R. and Augustin, C.O. and Sanjeeviraja, C. (2006) Characterization of SnO2-Coated CuFe2O4 Nanocomposites. Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, 36 (1). pp. 115-119. ISSN 1553-3174

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Nanocomposites are a cohesive class of materials, which have many technological applications due to their excellent properties, realizable within the range of 1–100nm sizes. Ferrite nanocomposites have been used as the potential candidate materials for photocatalytic and electrocatalytic anodes for oxidation of organic compounds like phenol, anodes for lithium batteries, inert anode for aluminium electrolysis, etc. Recently these are envisaged as an eco-friendly substitute for carbonaceous materials in electrochemical applications. In the present study the CuFe2O4/SnO2 nanocomposites have been prepared by a novel combustion method. The TEM figure confirms the nanocrystalline nature of the as-synthesized product. XRD spectra show the well-defined crystalline nature and a phase transition of tetragonal to cubic on increased SnO2 substitution. The band gap values calculated from the UV-Vis spectra are in the vicinity of semiconducting range. The maximum a.c. electrical conductivity of 1.75 3 1023 S . cm21 was obtained for CuFe2O4/5% SnO2 composition. The impedance spectrum also confirms the semiconducting behavior of the materials.

Item Type: Article
Uncontrolled Keywords: nanocomposites; spinel ferrite; X-ray diffraction; electrical conductivity
Subjects: Electrochemical Materials Science
Depositing User: ttbdu cecri
Date Deposited: 26 Mar 2012 10:51
Last Modified: 26 Mar 2012 10:51
URI: http://cecri.csircentral.net/id/eprint/846

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