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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 1
BKCSDE 33(1)
January 20, 2012

Title	The Comparison of Property and Visible Light Activity between Bulk and Surface Doped N-TiO₂ Prepared by Sol-gel and N₂-plasma Treatment
Author	Shaozheng Hu, * Fayun Li, Zhiping Fan
Keywords	TiO₂, Photocatalysis, Bulk doping, Surface doping, N₂-plasma
Abstract	A modified sol-gel method and N2-plasma treatment were used to prepare bulk and surface doped N-TiO2, respectively. XRD, TEM, UV-vis spectroscopy, N2 adsorption, Elemental Analyzer, Photoluminescence, and XP spectra were used to characterize the prepared TiO2 samples. The N doping did not change the phase composition and particle sizes of TiO2 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-TiO2 prepared by N2-plasma was much higher than that of bulk doped N-TiO2 prepared by sol-gel method. The possible mechanism for the photocatalysis was proposed.
Page	199 - 203
Full Text	PDF

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