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”Eau de graphene” from a KC 8 graphite intercalation compound prepared by a simple mixing of graphite and molten potassium
Author(s) -
Bepete George,
Hof Ferdinand,
Huang Kai,
Kampioti Katerina,
Anglaret Eric,
Drummond Carlos,
Pénicaud Alain
Publication year - 2016
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201600167
Subject(s) - graphene , graphite , intercalation (chemistry) , raman spectroscopy , mixing (physics) , inert gas , materials science , graphene oxide paper , potassium , chemical engineering , inert , nanotechnology , inorganic chemistry , chemistry , metallurgy , organic chemistry , composite material , optics , physics , engineering , quantum mechanics
We synthesized KC 8 by simply mixing molten potassium and graphite at 180 °C under inert atmosphere. The KC 8 shows typical shiny bronze color, Raman characteristics and XRD pattern of an efficiently intercalated stage 1 GIC, and is of sufficient quality to produce fully exfoliated graphenide solutions in tetrahydrofuran (THF) and subsequently single layer graphene in water as ”eau de graphene” (EdG). The evolution of absorption and Raman spectroscopic signatures of the EdG as a function of processing conditions give key indications on the number of layers of the graphene flakes dispersed in EdG. (© 2016 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)