Nano Archive

Synthesis, structural and conductivity characterization of alginic acida Fe3O4 nanocomposite

Unal, B. and Toprak, M. S. and Durmus, Z. and Sozeri, H. and Baykal, A. (2010) Synthesis, structural and conductivity characterization of alginic acida Fe3O4 nanocomposite. Journal of Nanoparticle Research, 12 (8). pp. 3039-3048.

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Abstract

Abstract Alginic acid–Fe3O4 nanocomposite is synthesized by the precipitation of Fe3O4 in the presence of alginic acid (AA). Structural, surface, morphological, thermal and electrical transport prop-erties of the nanocomposite were performed by XRD,FT-IR, TEM-SEM, TGA and conductivity measure-ments respectively. FT-IR analysis revealed that Fe3O4 NPs are strongly capped with AA and TGA analysis showed that nanocomposite have 80% of Fe3O4 content. TEM analysis of Fe3O4 NPs show an average particle size of 9.5 nm, and upon nanocom-posite formation with AA these particles are observed to form aggregates of *150 nm. The frequency-dependency of the AC conductivity show electrode polarization effect. Analysis of electrical modulus and dielectric permittivity functions suggest that ionic and polymer segmental motions are strongly coupled. DC electrical conductivity is strongly temperature depen-dent, and is classified into three regions over a limited temperature range of up to 100 C.

Item Type:Article
Subjects:Material Science > Nanochemistry
ID Code:9919
Deposited By:CSMNT
Deposited On:14 Jan 2011 07:05
Last Modified:14 Jan 2011 07:05

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