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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 29, Number 1
BKCSDE 29(1)
January 20, 2008

Title	Synthesis and Characterization of CNT/TiO₂ Composites Thermally Derived from MWCNT and Titanium(IV) n-Butoxide
Author	Won-Chun Oh*, Ming-Liang Chen
Keywords	Carbon nanotube, Titanium(IV) n-butoxide, XRD, SEM, Photocatalysis
Abstract	Two kinds of CNT/TiO₂ composite photocatalysts were synthesized with multi-walled carbon nanotubes (MWCNTs) and titanium(IV) n-butoxide (TNB) by a MCPBA oxidation method. Since MWCNTs had charge transfer and semiconducting, the CNT/TiO₂ composite shows a good photo-degradation activity. The XRD patterns reveal that only anatase phase can be identified for MCT composite, but the HMCT composite synthesized with HCl treatment was observed the mixed phase of anatase and rutile. The EDX spectra were shown the presence as major elements of Ti with strong peaks. From the SEM results, the sample MCT and HMCT synthesized by the thermal decomposition with TNB show a homogenous sample with only individual MWCNTs covered with TiO₂ without any jam-like aggregates between CNTs and TiO₂. From the photocatalytic results, we could be suggested that the excellent activity of the CNT/TiO₂ composites for organic dye and UV irradiation time could be attributed to combination effects between TiO₂ and MWCNTs with plausible photodegradation mechanism.
Page	159 - 0
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