Open AccessStructure of nanographite synthesised by electrochemical oxidation and exfoliation of polycrystalline graphite
Author(s) -
Radoń Adrian,
Łukowiec Dariusz
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0339
Subject(s) - materials science , graphene , graphite , raman spectroscopy , thermogravimetric analysis , exfoliation joint , fourier transform infrared spectroscopy , transmission electron microscopy , scanning electron microscope , spectroscopy , crystallite , selected area diffraction , high resolution transmission electron microscopy , graphite oxide , chemical engineering , analytical chemistry (journal) , nanotechnology , chemistry , composite material , optics , organic chemistry , engineering , metallurgy , physics , quantum mechanics
The Letter presents the results of characterisation of intercalated and exfoliated graphite. The electrochemically exfoliated graphite (EEG) was synthesised in solution containing sulphuric acid and potassium chlorate(V). The number of graphene layers, degree of disordering and the presence of functional groups were determined using X‐ray diffraction method, Raman spectroscopy, Fourier transform infrared spectroscopy and UV–visible spectroscopy. High‐resolution transmission electron microscopy and scanning electron microscopy were used to imaging morphology and structure of the synthesised material. The obtained micrographs indicate the presence of highly disordered areas near the edge of flakes and in‐plane ordered lattice structure in the flat zone between disordered areas. X‐ray diffraction patterns clearly indicate the presence of both nanographite and graphene oxide. The EEG was also characterised by relatively high thermal stability, which was confirmed using thermogravimetric analysis.