Bulletin of the Korean Chemical Society

  • 제33권1호
  • /
  • Pages.199-203
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  • 2012
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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The Comparison of Property and Visible Light Activity between Bulk and Surface Doped N-TiO2 Prepared by Sol-gel and N2-plasma Treatment

  • Hu, Shaozheng (Institute of Eco-environmental Sciences, Liaoning Shihua University) ;
  • Li, Fayun (Institute of Eco-environmental Sciences, Liaoning Shihua University) ;
  • Fan, Zhiping (Institute of Eco-environmental Sciences, Liaoning Shihua University)
  • 투고 : 2011.08.19
  • 심사 : 2011.11.15
  • 발행 : 2012.01.20
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초록

A modified sol-gel method and $N_2$-plasma treatment were used to prepare bulk and surface doped N-$TiO_2$, respectively. XRD, TEM, UV-vis spectroscopy, $N_2$ adsorption, Elemental Analyzer, Photoluminescence, and XP spectra were used to characterize the prepared $TiO_2$ samples. The N doping did not change the phase composition and particle sizes of $TiO_2$ samples, but increased the visible light absorption. The photocatalytic activities were tested in the degradation of an aqueous solution of a reactive dyestuff, methylene blue, under visible light. The photocatalytic activity of surface doped N-$TiO_2$ prepared by $N_2$-plasma was much higher than that of bulk doped N-$TiO_2$ prepared by sol-gel method. The possible mechanism for the photocatalysis was proposed.

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