Journal
MATERIALS RESEARCH BULLETIN
Volume 47, Issue 8, Pages 2095-2103Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.03.040
Keywords
Composites; Polymers; Chemical synthesis; Semiconductivity; Electrochemical properties
Categories
Funding
- Council of Scientific and Industrial Research (CSIR), New Delhi [01(2393)10/EMR-II]
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Titanium(IV)-doped synthetic nanostructured iron(III) oxide (NITO) and polypyrrole (PPy) nanocomposites was fabricated by in situ polymerization using FeCl3 as initiator. The polymer nanocomposites (PNCs) and pure NITO were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, electron dispersive X-ray spectroscopy, transmission electron microscopy, etc. Thermo gravimetric and differential thermal analyses showed the enhancement of thermal stability of PNCs than the pure polymer. Electrical conductivity of the PNCs had increased significantly from 0.793 x 10(-2) S/cm to 0.450 S/cm with respect to the PPy, and that had been explained by 3-dimensional variable range hopping (VRH) conduction mechanisms. In addition, the specific capacitance of PNCs had increased from 147 F/g to 176 F/g with increasing NITO content than that of pure NITO (26 F/g), presumably due to the growing of mesoporous structure with increasing NITO content in PNCs which reduced the charge transfer resistance significantly. (c) 2012 Elsevier Ltd. All rights reserved.
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