The dynamic covalent properties of graphene oxide (GO) are of elementary curiosity to a broad vary of scientific areas and technological purposes. It stays a problem to entry the possible dynamic reactions for reversibly breaking/reforming covalent bonds of oxygen useful teams on GO, though these reactions could be induced by photonic or mechanical routes, or mediated by adsorbed water. Right here, utilizing the density useful concept calculations, we reveal the remarkably enhanced dynamic oxygen migration alongside the basal airplane of GO supported by copper substrate (GO@copper), with the C-O bond breaking response and proton switch between the neighboring epoxy and hydroxyl teams. In comparison with that on GO, the power barrier of oxygen migration on GO@copper is sharply decreased to be lower than or corresponding to thermal fluctuations, and in the meantime the crystallographic match between GO and copper substrate induces new oxygen migration paths on GO@copper. This work sheds gentle on the understanding of steel substrate-enhanced dynamic properties of GO, and evidences the technique to tune the exercise of two-dimension-interfacial oxygen teams for numerous potential purposes.
