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http://dx.doi.org/10.5012/bkcs.2012.33.1.199

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)
Publication Information
Bulletin of the Korean Chemical Society / v.33, no.1, 2012 , pp. 199-203 More about this Journal
Abstract
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.
Keywords
$TiO_2$; Photocatalysis; Bulk doping; Surface doping; $N_2$-plasma;
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