Preparation of titania/carbon nanotube composites using supercritical ethanol and their photocatalytic activity for phenol degradation under visible light irradiation
作者： Guimin An , Wanhong Ma , Zhenyu Sun , Zhimin Liu , Buxing Han
DOI: 10.1016/J.CARBON.2007.04.034
关键词: Carbon nanotube 、 Visible spectrum 、 Materials science 、 Composite material 、 Nanoparticle 、 Photocatalysis 、 Titanium isopropoxide 、 Supercritical fluid 、 Titanium dioxide 、 Anatase
摘要: Abstract Titanium dioxide (anatase, TiO 2 ) nanoparticles have been successfully deposited onto multi-walled carbon nanotubes (MWCNTs) via hydrolysis of titanium isopropoxide in supercritical ethanol. The as-prepared composites were characterized by X-ray diffraction, transmission electron microscopy and photoelectron spectroscopy. It was demonstrated that the MWCNTs decorated with well-dispersed anatase less than 7 nm diameter. size loading content on could be tuned manipulating ratio precursor to MWCNTs, formation mechanism also discussed. absorbance spectrum resultant /MWCNT extended whole UV–visible region due decoration MWCNTs. used as photocatalyst for phenol degradation under irradiation visible light, which showed higher efficiency compared a mixture
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