Correlation between X-ray diffraction and Raman spectra of 16 commercial graphene—based materials and their resulting classification

Details

• Alternative Title:
  Carbon N Y
• Personal Author:
  Seehra, Mohindar S. ; Narang, Vishal ; Geddam, Usha K. ; Stefaniak, Aleksandr B.
• Description:
  Structural properties of sixteen (16) commercial samples of graphene-based materials (GBM) labelled as graphene, graphene oxide or reduced graphene oxide are investigated at room temperature using X-ray diffraction (XRD) and Raman spectroscopy. Based on the observed correlation between the results obtained with these two techniques, these samples are classified into three groups: Group A of seven samples consisting of graphitic nanosheets with evaluated thickness ≃20 nm and exhibiting both the 2H and 3R phases in XRD; Group B of six samples exhibiting XRD spectra characteristic of either graphene oxides (GO) or carbons with some order; and Group C of three samples with XRD spectra characteristic of disordered carbons. The relative intensities and widths of D, G, D', 2D and (D + D') bands in the Raman spectra are equally distinguishable between the samples in groups A, B and C. The width of the D-band is the smallest for Group A samples, intermediate for group B and the largest for group C samples. The intensity ratio I(D)/I(G) of the D and G bands in the Raman spectra of the samples is used to quantify the Raman-active defects whose concentration increases in going from samples in Group A to those in Group C.
• Subjects:
  Article
• Source:
  Carbon N Y. 111:380-384.
• Pubmed ID:
  28690336
• Pubmed Central ID:
  PMC5497829
• Document Type:
  Journal Article
• Funding:
  CC999999/Intramural CDC HHS/United States
• Volume:
  111
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:a140a66c969db2b906adcf15fb8e8fcad853ea6e4b1883010aa6f811c7da787b
• Download URL:
  https://stacks.cdc.gov/view/cdc/46810/cdc_46810_DS1.pdf
• File Type:
  [PDF - 833.79 KB ]