II International Symposium on Carbon for Catalysis ABSTRACTS

OP-I-28
LASER RAMAN MICRO-SPECTROSCOPY AS AN EFFECTIVE
NON-DESTRUCTIVE METHOD OF IDENTIFICATION AND INVESTIGATION
OF VARIOUS sp 2 -CARBON MODIFICATIONS
Bukalov S.S., Leites L.L.
A.N. Nesmeyanov Institute of Organoelement Compounds, Scientific and Technical Center on
Raman Spectroscopy, RAS, Moscow, Russia
e-mail: buklei@ineos.ac.ru
Graphite and various carbonaceous compounds are widely used in industry as modern
high-technology constructural materials. These comprise graphene layers forming bundles
and crystallites, whose size and packing are of great importance for macroscopic properties.
That is why structural methods allowing determination of crystallite size and their ordering
are of major interest.
Modern laser Raman spectrometers of the last generation (T64000, LabRAM Horiba-
Jobin Yvon) equipped by high-sensitive CCD detectors and microscopes allow one to identify
various carbon modifications, because each of the latter exhibits its own specific Raman
spectrum, characterized by a given number of Raman lines with their particular parameters
(frequency, intensity, half-width, contour). Besides, this non-destructive method gives a
unique possibility of Raman micro-mapping of the samples, that is, obtaining information
about sample heterogeneity. This method was applied in this study to many samples of sp 2 -
carbon including various graphites of natural and technical origin, as well as other
carbonaceous materials, such as glassy carbon, diamond-like carbon, shungites etc. The
results of Raman micro-mapping of a particle of Cylon graphite, demonstrating its
heterogeneity, is given below as an example (fig. 1)
Fig. 1
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