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- W3202645334 abstract "The dynamic covalent properties of graphene oxide (GO) are of fundamental importance in its technical applications, such as the fabrication of carbon-based electronic devices. Using the density functional theory (DFT) calculations, we explore the dynamic oxygen migration on Cu-supported GO. We find that the presence of Cu substrate significantly reduces the energy barriers of C-O bond breaking/reforming reactions or proton transfer between the neighboring epoxy and hydroxyl groups, thereby enabling the dynamic oxygen migration of the epoxy and hydroxyl. Especially, the proton-transfer energy barrier on Cu-supported GO can be reduced by an order of magnitude, comparing to that on free-standing GO. Meanwhile, the presence of Cu substrate makes it possible for the epoxy to migrate to the meta-position, which significantly expands the path of oxygen migration. Considering the high degree of matching between Cu and the graphene lattice as well as graphene is usually grown on Cu substrates, the fundamental understanding of the dynamic covalent properties provides significant insights for further designing in a variety of desired applications." @default.
- W3202645334 created "2021-10-11" @default.
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- W3202645334 date "2021-09-28" @default.
- W3202645334 modified "2023-09-27" @default.
- W3202645334 title "Enhanced Dynamic Oxygen Migration on Cu(111)-Supported Graphene Oxide" @default.
- W3202645334 hasPublicationYear "2021" @default.
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