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Lee, Geunsik
Electronic Structure and Transport in Condensed Materials
Research Interests
  • open quantum system, non-equilibrium electron transport
  • electron correlation, dynamical mean field theory
  • 2D materials, metal complexes

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The Role of Intercalated Water in Multilayered Graphene Oxide

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Title
The Role of Intercalated Water in Multilayered Graphene Oxide
Other Titles
The Role of Intercalated Water in Multilayered Graphene Oxide
Author
Acik, MugeMattevi, CeciliaGong, ChengLee, GeunsikCho, KyeongjaeChhowalla, ManishChabal, Yves J.
Keywords
graphene oxide; water chemistry; ketones; infrared spectroscopy; intercalation
Issue Date
2010-10
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.4, no.10, pp.5861 - 5868
Abstract
A detailed in situ infrared spectroscopy analysis of single layer and multilayered graphene oxide (GO) thin films reveals that the normalized infrared absorption in the carbonyl region is substantially higher in multilayered GO upon mild annealing. These results highlight the fact that the reduction chemistry of multilayered GO is dramatically different from the single layer GO due to the presence of water molecules confined in the similar to 1 nm spacing between sheets. IR spectroscopy, XPS analysis, and DFT calculations all confirm that the water molecules play a significant role interacting with basal plane etch holes through passivation, via evolution of CO2 leading to the formation of ketone and ester carbonyl groups. Displacement of water from intersheet spacing with alcohol significantly changes the chemistry of carbonyl formation with temperature
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DOI
10.1021/nn101844t
ISSN
1936-0851
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PHY_Journal Papers
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