ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Through self-assembly monolayer surface treatment, metal oxide nanoparticles uniformlydispersed onto carbon nanotubes (CNTs) surface are investigated. At first, oxidation treatment wasperformed to increase O/C ratio of CNTs surface at 250°C for 1 hr under an oxygen atmosphere.X-ray photoelectron spectroscopy (XPS) analysis shows that O/C ratio is a increasing function ofoxidating time. Distribution of oxygen functional groups on CNTs surface, i.e., carboxyl, carbonyl,phenolic groups, can be identified and deconvoluted by a symmetrical Gauss function. Experimentsindicate that heat time for 5hr can produce a greater O/C ratio on CNTs surface. It is observed thatcarboxyl groups acts an important role to link with metal ions via an ionic interaction, thus, forminga monolayer adsorption on CNTs surface. By heating the treated CNTs, a completely compositenanostructure is thus formed. In the present work, we successfully fabricate three kinds ofnanoparticles including SnO2, and RuO2, with an average diameter of 5-10 nm coated on the CNTs
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.407.pdf
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