Oxygen/Carbon Ratio Effects on Surface-Modified Carbon Nanotubes |
| Journal |
Journal of Nano Research (Volume 2) |
| Volume |
Journal of Nano Research Vol. 2 |
| Edited by |
|
| Pages |
77-84 |
| DOI |
10.4028/www.scientific.net/JNanoR.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 |
| 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. |
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