Journal
BULLETIN OF MATERIALS SCIENCE
Volume 36, Issue 1, Pages 31-36Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-013-0431-x
Keywords
Polyaniline nanofibres; tin oxide; nanocomposites; photoluminescence; TEM; UV-vis spectroscopy
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Funding
- UGC [F.31-7/2005(SR)]
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Polyaniline nanofibre-tin oxide (PAni-SnO2) nanocomposites are synthesized and mixed with polyvinyl alcohol (PVA) as stabilizer to cast free-standing films. Composite films are characterized by X-ray diffraction studies (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence spectroscopy (PL) and UV-visible spectroscopy. XRD confirms the formation of PAni nanofibre-SnO2 nanocomposite. From TEM images, diameter of the polyaniline nanofibre and SnO2 nanoparticles in the PAni-SnO2 nanocomposite are found to be 20-60 nm. SEM results show fibrous morphology of the PAni nanofibre and spherical morphology of polyaniline-SnO2 composites. The nanocomposites exhibit high relative photoluminescence intensity in violet as well as green-yellow region of visible spectrum. From electrical conductivity measurement, it is confirmed that PAni nanofibre-SnO2 nanocomposite follows Mott's one-dimensional variable range hopping (VRH) model.
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