Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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The effect of introduced method of titania and applied potential on the photoelectrocatalytic properties of CNT/TiO2 electrodes

  • Zhang, Feng-Jun (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Chen, Ming-Liang (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Oh, Won-Chun (Department of Advanced Materials & Science Engineering, Hanseo University)
  • Published : 2010.02.28
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Abstract

In this paper, three types of CNT/$TiO_2$ composite electrodes were prepared with different methods. The changes in XRD patterns showed that the Electrode A contained a mixed phase of anatase and rutile while the Electrode B and Electrode C contained a typical single and clear anatase crystal structure. From SEM micrographs, $TiO_2$ particles were adhered on the surface of the CNT network in the forms of small clusters. The results of chemical elemental analysis indicated that the main elements such as C, O and Ti were existed. The results demonstrated that the efficiency of photoelectrocatalytic (PEC) oxidation for methylene blue (MB) was higher than that of photocatalytic (PC) oxidation. There was a clear enhancement trend of the MB degradation using the prepared CNT/$TiO_2$ composite electrodes with an increase of applied potential. Finally, the prominent PEC activities of the CNT/$TiO_2$ composites could be attributed to combination effects of photo-degradation of $TiO_2$, electron assistant of CNT and function of applied potential.

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