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Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO2 Composite
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Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO2 Composite
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Journal Article
Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO2 Composite
2014
Overview
The multiwall carbon nanotubes (MWCNTs)/titanium dioxide (P25) composite in different ratios was prepared using simple evaporation and drying process. The composite was characterized by Raman spectroscopy, X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy, and scanning electron microscopy (SEM). The photocatalytic activity of this composite was investigated using degradation of the Bismarck brown R dye (BBR). An optimal MWCNTs/TiO2 ratio of 0.5% (w/w) was found to achieve the maximum rate of BBR degradation. It was observed that the composite exhibits enhanced photocatalytic activity compared with TiO2. The enhancement in photocatalytic activity performance of the MWCNTs/P25 composite is explained in terms of recombination of photogenerated electron-hole pairs. In addition, MWCNTs act as a dispersing support to control the morphology of TiO2 particles in the MWCNTs/TiO2 composite.
Publisher
Hindawi Publishing Corporation,John Wiley & Sons, Inc,Wiley
Subject
