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Deoxygenation of graphene oxide : reduction or cleaning?
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Thomas, Helen R., Day, Stephen Paul, Woodruff, William E., Vallés, Cristina, Young, Robert J. (Robert Joseph), Kinloch, Ian A., Morley, Gavin, Hanna, John V., Wilson, Neil R. and Rourke, Jonathan (2013) Deoxygenation of graphene oxide : reduction or cleaning? Chemistry of Materials, Volume 25 (Number 18). pp. 3580-3588. doi:10.1021/cm401922e ISSN 0897-4756.
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Official URL: http://dx.doi.org/10.1021/cm401922e
Abstract
We show that the two-component model of graphene oxide (GO), that is, composed of highly oxidized carbonaceous debris complexed to oxygen functionalized graphene sheets, is a generic feature of the synthesis of GO, independent of oxidant or protocol used. The debris present, roughly one-third by mass, can be removed by a base wash. A number of techniques, including solid state NMR, demonstrate that the properties of the base-washed material are independent of the base used and that it contains similar functional groups to those present in the debris but at a lower concentration. Removal of the oxidation debris cleans the GO, revealing its true monolayer nature and in the process increases the C/O ratio (i.e., a deoxygenation). By contrast, treating GO with hydrazine both removes the debris and reduces (both deoxygenations) the graphene sheets.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Physics |
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Library of Congress Subject Headings (LCSH): | Graphene | ||||
Journal or Publication Title: | Chemistry of Materials | ||||
Publisher: | American Chemical Society | ||||
ISSN: | 0897-4756 | ||||
Official Date: | 14 August 2013 | ||||
Dates: |
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Volume: | Volume 25 | ||||
Number: | Number 18 | ||||
Page Range: | pp. 3580-3588 | ||||
DOI: | 10.1021/cm401922e | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 27 December 2015 | ||||
Date of first compliant Open Access: | 27 December 2015 | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Warwick, Birmingham Science City, Advantage West Midlands (AWM), European Regional Development Fund (ERDF), Royal Society (Great Britain) | ||||
Grant number: | EP/IO23879/1 (EPSRC) |
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