Paper Title:
Oxygen/Carbon Ratio Effects on Surface-Modified Carbon Nanotubes
| Periodical | Journal of Nano Research (Volume 2) |
|---|---|
| Main Theme | Journal of Nano Research Vol. 2 |
| Pages | 77-84 |
| DOI | 10.4028/www.scientific.net/JNanoR.2.77 |
| Citation | U.S. Chen et al., 2008, Journal of Nano Research, 2, 77 |
| Online since | August, 2008 |
| Authors | U.S. Chen, Heng Yi Su, Chung Hao Wang, Han Chang Shih, Chien Te Hsieh, Jin Ming Chen |
| Keywords | Carbon Nanotube (CNT), Carbon Ratio, Oxygen Ratio, Self-Assembled, Surface Modification |
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Abstract
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.
