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Journal of Materials Science
Erschienen in: Journal of Materials Science 4/2014

01.02.2014

Size-specified graphene oxide sheets: ultrasonication assisted preparation and characterization

verfasst von: Xiaodong Qi, Tiannan Zhou, Sha Deng, Guiying Zong, Xuelin Yao, Qiang Fu

Erschienen in: Journal of Materials Science | Ausgabe 4/2014

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Abstract

The preparation of graphene oxide (GO) sheets with specified size was developed by simply controlling the time of ultrasonication to the large-size GO (LGO) sheets. The LGO sheets were synthesized by choosing large parent graphite, mild oxidation condition and a two-step centrifugation. The different-sized GO samples prepared under different ultrasonication times, are characterized by Scanning electron microscopy, X-ray photoelectron spectroscopy, Ultraviolet–visible spectroscopy, and X-ray diffraction. It is found that the size of the GO sheets, which has a Gaussian distribution, decreases from 231 to 17 μm2 as the ultrasonication time increases. Moreover, the ultrasonication not only can exfoliate and break GO sheets, but also increase the oxidation degree of GO sheets, especially when the GO sheets have a weak oxidation degree. It is reasonable to believe that the size of GO sheets is closely correlated to the C–O content, which enables the size of GO sheets to be controlled. Our work demonstrates that ultrasonication is an important method to control the size and the oxidation degree of GO sheets, to a certain extent.
Vorheriger Artikel Effect of Sn doping on microstructural and optical properties of ZnO nanoparticles synthesized by microwave irradiation method
Nächster Artikel Brittle–ductile transition behavior of poly(ethylene terephthalate)/poly(ethylene-octene) blend: the roles of compatibility and test temperature

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Metadaten
Titel
Size-specified graphene oxide sheets: ultrasonication assisted preparation and characterization
verfasst von
Xiaodong Qi
Tiannan Zhou
Sha Deng
Guiying Zong
Xuelin Yao
Qiang Fu
Publikationsdatum
01.02.2014
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 4/2014
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-013-7866-8

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