Formation and Decomposition of CO2 Intercalated Graphene Oxide

We found that the formation starts at 50 °C and develops up to 120 °C

Siegfried Eigler; Christoph Dotzer; Andreas Hirsch; Michael Enzelberger; Paul Müller

2012

Scholarcy highlights

  • The formation, stability, and decomposition of CO2 intercalated graphene oxide was analyzed by FTIR, TGA-MS, TGA-IR, AFM, and SEM for the first time
  • The decomposition of CO2 intercalated graphene oxide occurs due to the release of water, CO2, and CO that can be monitored by TGA-MS and TGA-IR analysis
  • In addition we prepared 18OH2 treated graphene oxide to elucidate the formation process of CO2 and found C16O18O by TGA-MS analysis that proves the crucial role of water during CO2 formation
  • It seems likely that rearrangement reactions that can proceed via hydrate intermediates, known from organic chemistry, are probably responsible for the formation of carboxylic acids at the edges of graphene oxide sheets after sonication of graphite oxide
  • FTIR spectra of GO films on ZnSe annealed under argon; details of TGA-IR analysis of GO between RT and 700 °C; AFM image of GO flake structure in GO films; SEM images of heated GO film at 180 °C and CO2 intercalated GO at 110 °C and CO2 formation in GO films with different film thickness; Raman spectra of GO film on ZnSe after annealing at 60, 120, and 160 °C; FTIR spectra of freeze-dried GO on ZnSe after 2 weeks dried over P2O5, TGA-MS analysis of 18OH2 exchanged GO, microscope images of graphite oxide and GO and AFM image of GO
  • Formation and trapping of CO2 due to the decomposition of amide solvents during the chemical reduction of graphene oxide by using the solvothermal method

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