Table 4 Positions of D, G, and 2D bands and analysis from the Raman spectra.

From: The facile conversion of waste biomass into few-layer graphene oxide

Sample

Position of D band (cm−1)

Position of G band (cm−1)

Position of 2D band (cm−1)

ID/IG

Number of graphitic layers

1C

1353

1585

2691

1.0

1.7

1D

1350

1584

2691

0.84

2.8

2C

1354

1583

2695

0.82

3.9

2D

1354

1584

2701

0.62

3.0