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Title: Electroactivity of graphene oxide on different substrates
Authors: Bonanni, Alessandra
Pumera, Martin
Keywords: DRNTU::Engineering::Materials::Metallic materials
Issue Date: 2012
Source: Bonanni, A., & Pumera, M. (2012). Electroactivity of graphene oxide on different substrates. RCS Advances, 2(28), 10575-10578.
Series/Report no.: RSC advances
Abstract: Graphene oxide is known to be electroactive on carbon materials due to the reduction of various inherent oxygen functionalities on its surface. In this work, we show that the characteristic reduction peak of graphene oxide is masked when the reduction is performed on different platforms (i.e. gold or platinum) apart from the usual carbon platform. Moreover, we demonstrated that the presence of gold nanoparticles (AuNPs) on the carbon platform has a strong influence on the reduction peak of graphene oxide nanoplatelets (GONPs). The influence of AuNP sizes and concentrations on the electrochemical reduction of GONPs was assessed as well. Finally, by XPS characterization we demonstrated that even though the reduction wave was not evident on the voltammogram, the reduction still occurred on the AuNP-modified carbon surfaces. Our findings can be very useful for those who are interested in exploiting the electroactivity of graphene oxide.
ISSN: 2046-2069
DOI: 10.1039/C2RA22079B
Rights: © 2012 The Royal Society of Chemistry.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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