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CVD synthesis of carbon nanotubes was carried out usingethanol paralysis in tubular quartz reactor at atmospheric pressure ofhydrogen. Ni, Co and Fe catalyst were used for CNT deposition. The CNT samplesobtained under various experimental conditions were studied by scanningelectron microscopy SEM, X-ray fluorescent microanalysis and Ramanspectroscopy. The ratio of ID-IG of D ~1360 cm-1 and G ~1580 cm-1 Raman peaks wasmonitored to estimate the crystalline of graphite-like material. The optimalconditions for synthesis of CNTs on the Si-substrates and on the SiO2-basedfiberglass were determined. MWNT were produced with 25-30 nm diameters, up to 30microns in length and with crystallite size La from 2.7 nm to 7 nm. DCelectrical properties of carbon composites MWNT-SiO2-fiberglass wereexamined. Specific resistance was about 10 cmand more depending on CNT content. It was found that the resistivity of thecarbon composites MWNT-SiO2 is sensitive to external pressure.Processing of composite with binding polymer significantly improves stabilityand repeatability of its voltage-current characteristics.

KEYWORDS

Carbon Nanotubes CNT; Chemical Vapor Deposition CVD; Scanning Electron Microscopy SEM; Raman Spectroscopy

Cite this paper

K. A. Abdullin, D. G. Batryshev, Y. V. Chikhray, M. T. Gabdullin, D. V. Ismailov and A. K. Togambaeva -Gas-phase Synthesis of Carbon Nanostructures and Composites,- Open Journal of Microphysics, Vol. 3 No. 3B, 2013, pp. 1-4. doi: 10.4236-ojm.2013.33B001.





Autor: Kh. A. Abdullin, D. G. Batryshev, Y. V. Chikhray, M. T. Gabdullin, D. V. Ismailov, A. K. Togambaeva

Fuente: http://www.scirp.org/



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