ChemInform Abstract: NEW LINES IN THE RAMAN SPECTRA OF CARBONS AND GRAPHITE

Vidano, R.P.; Fischbach, D. B.

doi:10.1002/chin.197824009

Cited by 3 publications

(1 citation statement)

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“…Ten spots were measured for each individual sample. Each spectrum was fitted with the Origin 8.0 software to resolve the curve using the Lorentzian line shapes [46][47][48][49][50]. The parameter R 2 = AD 1 /(AD 1 + AD 2 + AG) (area ratio of bands) was used to characterize the carbon materials [17,18,51].…”

Section: Raman Spectroscopymentioning

confidence: 99%

Strain-Induced Graphitization Mechanism of Coal-Based Graphite from Lutang, Hunan Province, China

et al. 2019

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Anthracite and coal-based graphite (CBG) samples were collected at varying distances from a granite intrusion. Optical microscopy, X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM) were used to characterize the structural evolution of CBG at different scales. The results indicated differences in the graphitization rates of coal macerals and crystallization degree of different graphite-like particles. Differentiated graphitization of coal was caused by deformation, which led to the discontinuous distribution of CBG. This indicates that samples located at the same distance from the intrusion were graphitized to different degrees or that CBG with a similar graphitization degree occurred at varying distances from the intrusion. A possible mechanism for graphitization is strain-induced graphitization, where the local stress concentration leads to preferred orientations of the basic structure units (BSUs), as well as the motion and rearrangement of structural defects, resulting in the formation of a locally ordered structure. The graphitization degree is enhanced as the local graphite structure spreads.

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