Exploring the reactivity of distinct electron transfer sites at CVD grown monolayer graphene through the selective electrodeposition of MoO₂ nanowires.

ABSTRACT: The origin of electron transfer at Chemical Vapour Deposition (CVD) grown monolayer graphene using a polymer-free transfer methodology is explored through the selective electrodeposition of Molybdenum (di)oxide (MoO₂). The electrochemical decoration of CVD monolayer graphene with MoO₂ is shown to originate from the edge plane like- sites/defects. Edge plane decoration of MoO₂ nanowires upon monolayer graphene is observed via electrochemical deposition over short time periods only (ca. -0.6 V for 1 second (vs. Ag/AgCl)). At more electrochemically negative potentials (ca. -1.0 V) or longer deposition times, a large MoO₂ film is created/deposited on the graphene sheet, originating and expanding from the original nucleation points at edge plane like-

SUBMITTER: Garcia-Miranda Ferrari A 

PROVIDER: S-EPMC6731215 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature