Photoelectrocatalytic Performance of Ag/TiO2-xNx Nanotube

doi:10.3724/SP.J.1077.2010.00285

Abstract

Abstract: High density, well ordered,vertically aligned and uniform titanium oxide nanotube arrays were fabricated on the surface of pure titanium sheet by direct electrochemical anodic oxidation under 20V in electrolyte of 0.5wt％NaF +1mol/L Na₂SO₄. Then TiO₂nano-tube array were annealed in ammonia for 2h, Ag nano-particles were deposited photocatalytically on the N-doped TiO₂ nanotube surface. XRD, SEM and XPS techniques were used to characterize titanium oxide nanotube arrays. Results show that photoelectrondegradation efficiency of Ag/TiO _2-x N_x nano-tubes under UV-light is about 39.68% higher than that of TiO2 nanotubes; and photoelectrodegradation efficiency of Ag/TiO _2-x N_x nano-tubes under visible light is 12% higher than that of TiO₂nano-tubes. After photoelectrondegradation under visible hight for 16h, the degradation rate of mathylene blue with initial concentration of 10×10^-6 mol/L is 50.53%.

Key words: anodic oxidation, TiO₂ nano-tubes, doping, photoelectrocatalytic degradation

CLC Number:

WAN Bin,CHEN Ming-Bo,ZHOU Xi-Ying,WANG Wei,LI Wen-Ge. Photoelectrocatalytic Performance of Ag/TiO_2-xN_x Nanotube[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2010.00285.

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Photoelectrocatalytic Performance of Ag/TiO_2-xN_x Nanotube

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