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HomeNanotechnologyRemarkably Enhanced Dynamic Oxygen Migration on Graphene Oxide Supported by Copper Substrate

Remarkably Enhanced Dynamic Oxygen Migration on Graphene Oxide Supported by Copper Substrate


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 purposeful teams on GO, though these reactions could be induced by photonic or mechanical routes, or mediated by adsorbed water. Right here, utilizing the density purposeful idea calculations, we exhibit the remarkably enhanced dynamic oxygen migration alongside the basal aircraft 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 diminished to be lower than or akin 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 mild 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.

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