The Degree of Oxidation of Graphene Oxide.
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ABSTRACT:
SUBMITTER: Carvalho A
PROVIDER: S-EPMC7995973 | biostudies-literature | 2021 Feb
REPOSITORIES: biostudies-literature
Publications
The Degree of Oxidation of Graphene Oxide.
Carvalho Alexandra A Costa Mariana C F MCF Marangoni Valeria S VS Ng Pei Rou PR Nguyen Thi Le Hang TLH Castro Neto Antonio H AH
Nanomaterials (Basel, Switzerland) 20210224 3
We show that the degree of oxidation of graphene oxide (GO) can be obtained by using a combination of state-of-the-art ab initio computational modeling and X-ray photoemission spectroscopy (XPS). We show that the shift of the XPS C1s peak relative to pristine graphene, ΔEC1s, can be described with high accuracy by ΔEC1s=A(cO-cl)2+E0, where c0 is the oxygen concentration, A=52.3 eV, cl=0.122, and E0=1.22 eV. Our results demonstrate a precise determination of the oxygen content of GO samples. ...[more]
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