Journal
JOURNAL OF SURFACE INVESTIGATION
Volume 11, Issue 1, Pages 38-48Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1027451017010165
Keywords
pyrolysate; structure; scattering; X-rays; atomic correlalion in La diphthalocyanine pyrolysates
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Funding
- Russian Foundation for Basic Research [14-23-01015 ofi-m]
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Data on X-ray diffraction in lanthanum diphthalocyanine pyrolysates synthesized at temperatures of 800-1800 degrees C. demonstrate the formation of an amorphous carbon phase with embedded lanthanum atoms. Low-temperature pyrolysis (800-900 degrees C.) creates layered carbon structures. Due to annealing at 1000 degrees C., carbon integrates into globules whose number of atoms is m similar to 100. Such structures with gyration radii of R-g similar to 0.4-0.5 nm on the order of the precursor molecule size are synthesized in the temperature range of 1000-1800 degrees C., and are stable in terms of size and mass. In this case, their density approaches that of graphite.
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