Table 1

Percentages of oxygen-containing groups of GO and RGO from XPS data

Sample

C-O

C=O

O-C=O

GO

20.8

10.0

6.1

RGO

11.5

6.9

2.9

Chen et al. Nanoscale Research Letters 2012 7:101   doi:10.1186/1556-276X-7-101