Revisiting the Oxidation of Graphite: Reaction Mechanism, Chemical Stability, and Structure Self-Regulation.

ABSTRACT: To fully understand the chemical structure of graphene oxide and the oxidation chemistry of sp² carbon sites, we conducted a practical experiment and density functional theory combined study on the oxidation process of graphite. The nuclear magnetic resonance, thermogravimetric analysis, and X-ray photoelectron spectroscopy results of unhydrolyzed oxidized graphite indicate that the oxidation process involves the intercalating oxidation, where electrically neutral species is the oxidizing agent, and the diffusive-oxidation, where MnO₃ ⁺ is the oxidizing agent. An intrinsic formation and conversion path of oxygen-containing functional groups is proposed based on the experimental results and further interpreted with the aid of frontier molecular orbital theor

SUBMITTER: Li C 

PROVIDER: S-EPMC7045566 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature