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. 2018 Mar 1;122(15):8182–8190. doi: 10.1021/acs.jpcc.7b10675

Table 5. Elemental Composition and Proportion of sp2-Hybridized Carbon (C-Sp2) of All Investigated Graphene Oxide Samples Determined via XPS.

  element [at. %]
  
sample C O N C-sp2 [at. %]
GO-SA 71 28 <1 29
GO-DE 72 27 <1 45
GO-nano 67 33 <1 19
GO-NH2 73 23 3 42