The formation of a carbon nanotube–graphene oxide core–shell structure and its possible applications

The formation of a carbon nanotube–graphene oxide core–shell structure and its possible applications

A stable aqueous dispersion of hydrophobic single-walled carbon nanotubes (SWCNTs) and amphiphilic graphene oxide (GO) nano-sheets was produced by sonication mixing without assistance of any surfactant. Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, and electrica...

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Bibliographic Details
Main Authors: Dong, Xiaochen, Xing, Guichuan, Chan-Park, Mary B., Shi, Wenhui, Xiao, Ni, Wang, Jing, Yan, Qingyu, Sum, Tze Chien, Huang, Wei, Chen, Peng
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2012
Subjects:
DRNTU::Engineering::Materials::Nanostructured materials
Online Access:https://hdl.handle.net/10356/79982
http://hdl.handle.net/10220/7590
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Institution: Nanyang Technological University
Language: English
Description
Summary:A stable aqueous dispersion of hydrophobic single-walled carbon nanotubes (SWCNTs) and amphiphilic graphene oxide (GO) nano-sheets was produced by sonication mixing without assistance of any surfactant. Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, and electrical characterization suggest that SWCNTs are completely wrapped by GO nano-sheets. The spontaneous formation of such a core–shell structure is due to the strong pi–pi stacking interaction between the two materials. The electronic coupling between them is evidenced by time-resolved fluorescence measurement. The potential of such a nanocarbon hybrid in optical limiting and supercapacitor applications is discussed.

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