The role of intercalated water in multilayered graphene oxide

Muge Acik, Cecilia Mattevi, Cheng Gong, Geunsik Lee, Kyeongjae Cho, Manish Chhowalla, Yves J. Chabal

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271 Citations (Scopus)

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 ∼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.

Original languageEnglish
Pages (from-to)5861-5868
Number of pages8
JournalACS nano
Volume4
Issue number10
DOIs
Publication statusPublished - Oct 26 2010

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Keywords

  • graphene oxide
  • infrared spectroscopy
  • intercalation
  • ketones
  • water chemistry

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Acik, M., Mattevi, C., Gong, C., Lee, G., Cho, K., Chhowalla, M., & Chabal, Y. J. (2010). The role of intercalated water in multilayered graphene oxide. ACS nano, 4(10), 5861-5868. https://doi.org/10.1021/nn101844t