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J. Korean Ceram. Soc. > Volume 46(3); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(3): 263.
doi: https://doi.org/10.4191/kcers.2009.46.3.263
Photoelectrocatalytic Degradation of Dyes in Aqueous Solution Using CNT/TiO2 Electrode
Feng-Jun Zhang, Jin Liu, Ming-Liang Chen1, Won-Chun Oh
School of Materials and Chemical Engineering, Anhui University of Architecture
1Department of Advanced Materials & Science Engineering, Hanseo University
The effect of photoelectrocatalytic (PEC) degradation for different dyes with the CNT/$TiO_2$ electrode was studied. The prepared electrode was characterized with surface properties, structural crystallinity, elemental identification, and PEC activity. The $N_2$ adsorption data showed that the composites had decreased surface area compared with the pristine CNT. This indicated the blocking of micropores on the surface of CNT, which was further supported by observation via FESEM. XRD patterns of the composites showed that the CNT/$TiO_2$ composite contained a mixing anatase and rutile phase. EDX spectra showed the presence of C, O and Ti peaks for all samples. The decomposition efifciency of the prepared electrode was evaluated by the PEC degradation of three dyes (methylene blue (MB), rhodamine B (RH.B), methyl orange (MO)). The variations of the FT-IR spectra and pH value of dye solutions were measured during the PEC system; it was found that the CNT/$TiO_2$ electrode has better PEC degradation for MB solution than that of RH.B and MO. The proposed degradation mechanism was present.
Key words: CNT/$TiO_2$, electrode, Photoelectrocatalytic (PEC) degradation, Dyes, FT-IR, pH
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