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RESEARCH PRODUCT
Thermal Properties, Raman Spectroscopy and Tem Images of Neutron-Bombarded Graphite
Giuseppe PalleschiFranco CataldoMarilena CarboneFederica ValentiniGiorgio NasilloTibor BraunEugenio CaponettiOrnella Ursinisubject
inorganic chemicalsMaterials scienceSonicationAnalytical chemistrylaw.inventionsymbols.namesakelawneutrons irradiationGeneral Materials ScienceNeutronSettore CHIM/01 - Chimica AnaliticaGraphitePhysical and Theoretical ChemistryWigner effectSettore CHIM/02 - Chimica FisicaWigner energySettore CHIM/03 - Chimica Generale e Inorganicaintegumentary systemGrapheneOrganic ChemistrygrapheneGraphite neutrons irradiation graphene exfoliation Wigner energy Raman spectroscopy TEM imagingtechnology industry and agricultureGraphite neutrons irradiation graphene exfoliation Wigner energy Raman spectroscopyTEM imagingexfoliationExfoliation jointAtomic and Molecular Physics and OpticsTransmission electron microscopyRaman spectroscopyTEM imagingbiological sciencessymbolsGraphitelipids (amino acids peptides and proteins)Raman spectroscopydescription
Neutron-irradiated graphite to a total dose of 3.6 × 1016 n cm−2 was studied by DSC, Raman spectroscopy and transmission electron microscopy (TEM). The Wigner energy of neutron-irradiated graphite was 9.5 J/g as measured by DSC; it was released with an exothermal peak at 220°C. The Raman spectroscopy has confirmed the expected effect caused by neutron irradiation of the graphite substrate. The TEM imaging has shown that neutron-irradiated graphite can be effectively exfoliated by sonication in comparison to pristine graphite, which under similar conditions does not exfoliate at all. The interstitial Frenkel defects in neutron-irradiated graphite are intercalated between the graphene layers of the graphite and favor the exfoliation under adequate conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 |