Analyzing the Raman Spectra of Graphenic Carbon Materials from Kerogens to Nanotubes: What Type of Information Can Be Extracted from Defect Bands?

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Marc Monthioux¹  Nicolas Ratel-Ramond¹  Jérémie-Marie Plewa¹  Mariem Kandara¹  Pascal Puech¹  Germercy Paredes¹  Anirban Kundu¹  Roland Pellenq²  Ludovic Moulin³  Elsa Weiss-Hortala³ 

[1] CEMES, UPR8011-CNRS, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse CEDEX 04, France;CNRS/MIT/Aix-Marseille Université Joint Laboratory “MultiScale Materials Science for Energy and Environment,” UMI 2, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA;IMT Mines Albi, Centre RAPSODEE, UMR CNRS 5302, Campus Jarlard, F-81013 Albi CEDEX 09, France;

关键词: raman;    crystallite size;    carbon;    double resonance;   

DOI  :  10.3390/c5040069

来源: DOAJ

【 摘 要 】

Considering typical spectra of a broad range of carbonaceous materials from gas-shale to nanotubes, various ways by which defects show up in Raman spectra are exampled and discussed. The position, resonance behavior, and linewidth of both the D and G bands are compared, even if in some cases obtaining accurate information on the materials from the fitting parameters is a difficult task. As a matter of fact, even if a full picture is unreachable, defining parameter trends is one acceptable option. Two ways to determine the linewidth, either graphically and or by fitting are proposed in order to be able to compare literature data. The relationship between the crystallite size obtained from the linewidth and from X-ray diffraction, which is complementary to the Tuinstra and Koenig law, is examined. We show that a single approach is not possible unless modeling is performed and therefore that analysis of Raman spectra should be adapted to the specificities of each sample series, i.e., a minimum of knowledge about the materials is always required.

【 授权许可】

Unknown