Materials Science & Technology

FULLTEXT SEARCH
NEW: Advanced Search

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.
Full Paper PDF Download the paper
Preview PDF Free first page example