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Facile synthesis of graphene oxide hybrids bridged by copper ions for increased conductivity
journal contribution
posted on 2013-01-01, 00:00 authored by M Mathesh, J Liu, N Nam, S Lam, R Zheng, Colin BarrowColin Barrow, Wenrong YangWenrong YangIn this article, we report a facile method for preparing graphene oxide (GO) hybrid materials consisting of copper ions (Cu2+) complexed with GO, where Cu2+ acted as bridges connecting GO sheets. The method of film formation is based on cross-linking GO using Cu2+ followed by filtration onto nanoporous supports. This binding can be rationalized due to the chemical interaction between the functional groups on GO and the metal ion. We observed that there was a decrease in charge transfer resistance through electrochemical study. It suggests that the presence of metal ions in GO films could introduce new energy levels along the electron transport pathway and open up possible conduction channels. We also found that the hybrid graphene film assembled with Cu2+ dramatically decreases resistance through flash light reduction.
History
Journal
Journal of materials chemistry CVolume
1Issue
18Pagination
3084 - 3090Publisher
RSC PublicationsLocation
Cambridge, EnglandPublisher DOI
ISSN
2050-7526eISSN
2050-7534Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2013, Royal Society of ChemistryUsage metrics
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