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Synthesis of crystallites of carbon nitride in amorphous carbon

Gopalakrishnan, B and Subramanyam, SV (2002) Synthesis of crystallites of carbon nitride in amorphous carbon. In: International Journal of Modern Physics B, 16 (6-7). 1148-1153 .

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Official URL: http://www.worldscinet.com/ijmpb/16/1606n07/S02179...

Abstract

We report the successful synthesis of crystalline carbon nitride by chemical vapor deposition of certain nitrogen containing organic precursors. The precursor is heated and the vapors enter the hot deposition zone where they are pyrolysed and deposited in the form of thin films over pretreated substrates. The powder x-ray diffraction analysis shows clear peaks corresponding to the carbon nitride crystals of tetragonal form in addition to a broad hump corresponding to the amorphous nitrogenated carbon. The crystallites size is similar to300Angstrom and the volume fraction of the crystallites is about similar to7%. The optimum conditions of preparation are found out. The Infrared spectra of these samples also suggest the formation of Carbon Nitride crystals. The analysis reconfirms that the material contains crystallites of Carbon Nitride embedded in an amorphous matrix of nitrogenated carbon. Further the material is characterized by C,H,N elemental analysis, EDX and Raman spectra. Since all the above analyses probe the bulk material, the background amorphous matrix in this case, expecting a clear evidence of nanometer sized crystallites from these tests are unlikely. Attempts are being made to increase the yield of these carbon nitride crystallites.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to World Scientific Publishing Company.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 27 Jul 2011 08:01
Last Modified: 27 Jul 2011 08:01
URI: http://eprints.iisc.ernet.in/id/eprint/39445

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