Oxygen/Carbon Ratio Effects on Surface-Modified Carbon Nanotubes

Abstract:

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Carbon nanotubes (CNTs) were functionalized using a simple method of heat treatment under oxygen atmosphere followed by an immersion in a tin nitrate aqueous solution. And well-dispersed SnOx nanodots were decorated on the surface of CNTs. X-ray photoelectron spectroscopy (XPS) analysis showed that the O/C ratio increases with oxygen-treated time. The distribution of carbon-containing functional groups on the CNTs surface, i.e., C−C, C−O, C=O, O−C=O, and π−π* shake up bonds can be identified and deconvoluted by a symmetrical Gauss function. The contact angle of H2O and CNTs is dependent on O/C ration. The relationships between the fraction of carbon-containing functional groups and various oxygen treatment times are also discussed.

Info:

Periodical:

Pages:

77-84

DOI:

10.4028/www.scientific.net/JNanoR.2.77

Citation:

U.S. Chen et al., "Oxygen/Carbon Ratio Effects on Surface-Modified Carbon Nanotubes", Journal of Nano Research, Vol. 2, pp. 77-84, 2008

Online since:

August 2008

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