A CNT- TiO₂ nano composite was prepared from titanium chloride ( TiCl₄ ) via sol-gel process using multi walled carbon nano tube (MWCNT) followed by calcination at 450∘C . Spectral analysis revealed that the formed TiO₂ resided on the carbon in anatase form. The effect of adsorption was investigated using aqueous solution of methylene blue and procion blue dye. The photochemical reaction of CNT- TiO₂ composite in aqueous suspensions was studied under UV illumination in batch process. The reaction was investigated by monitoring the discoloration of the dyes employing UV-Visible spectro-photometeric technique as a function of irradiation time. The catalyst composites were found to be efficient for the photodegradation of the dye.
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Kim et al. (2008) studied this question.
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