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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 Yang
In 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 C

Volume

1

Issue

18

Pagination

3084 - 3090

Publisher

RSC Publications

Location

Cambridge, England

ISSN

2050-7526

eISSN

2050-7534

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2013, Royal Society of Chemistry