Template-free preparation of a few-layer graphene nanomesh via a one-step hydrothermal process

Graphene nanomesh was prepared via one-step hydrothermal process in a teflon-lined autoclave. The graphite flakes were used as the raw materials and no templates were adopted during the preparation. Experiment results showed that as the hydrothermal temperature increased, there was an obvious transi...

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Bibliographic Details
Published in:Journal of materials science 2015-02, Vol.50 (3), p.1317-1322
Main Authors: Wu, Xiang-feng, Zhang, Jie, Zhuang, Ya-fang, Li, Jing, Han, Liu-chun, Xiao, Feng-juan
Format: Article
Language:English
Subjects:
Atomic beam spectroscopy
Atomic force microscopes
Atomic force microscopy
Autoclaves
Autoclaving
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Electron microscopes
Flakes
Fourier transforms
Graphene
Graphite
Gravimetric analysis
Hydrothermal treatment
Infrared analysis
Infrared lasers
Materials Science
Morphology
Nanostructure
Original Paper
Oxides
Polymer Sciences
Polytetrafluoroethylene
Raman spectroscopy
Raw materials
Solid Mechanics
Spectrum analysis
Transmission electron microscopes
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Summary:Graphene nanomesh was prepared via one-step hydrothermal process in a teflon-lined autoclave. The graphite flakes were used as the raw materials and no templates were adopted during the preparation. Experiment results showed that as the hydrothermal temperature increased, there was an obvious transition in the structure and morphology of the final products. When the temperature was set at 95 °C, the graphite was oxidized to graphite oxide. The structural transition of the sample could be observed at 115 °C, part of the sample was reduced during the hydrothermal treatment. When the temperature reached to 135 or 155 °C, there appeared signals related to graphene; no obvious information about graphene oxide could be detected. Some holes were discovered in the samples. These structural changes were confirmed by X-ray diffraction, thermo-gravimetric analysis, and Fourier transform infrared spectroscopy and laser Raman spectroscopy. Moreover, atomic force microscope and transmission electron microscope revealed the as-prepared graphene was monolayer or few-layer nanomesh.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-014-8691-4