Enhancement of Visible-Light-Induced Photocurrent and Photocatalytic Activity of V and N Codoped TiO2 Nanotube Array Films

Highly ordered TiO2 nanotube arrays (TNAs) codoped with V and N were synthesized by electrochemical anodization in association with hydrothermal treatment. The samples were characterized by field emission scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The photocurrent and photocatalytic activity of codoped TiO2 nanotube arrays were investigated under visible light irradiation. Moreover, the production of hydroxyl radicals on the surface of visible light-irradiated samples is detected by a photoluminescence technique using terephthalic acid (TA) as a probe molecule. It was found that the V+N co-doped TiO2 nanotube arrays showed remarkably enhanced photocurrent and photocatalytic activity than undoped sample due to the V and N codoping.

[1]  Z. Zou,et al.  Water Adsorption and Decomposition on N/V-Doped Anatase TiO2 (101) Surfaces , 2013 .

[2]  T. He,et al.  Improved visible light photocatalytic activity of titania doped with tin and nitrogen , 2011 .

[3]  D. Gu,et al.  V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation , 2008 .

[4]  Yichun Liu,et al.  Electrospun nanofibers of V-doped TiO2 with high photocatalytic activity. , 2010, Journal of colloid and interface science.

[5]  G. Silversmit,et al.  An XPS study on the surface reduction of V2O5(001) induced by Ar+ ion bombardment , 2006 .

[6]  First-principles calculations on electronic structures of N/V-doped and N-V-dodoped anatase TiO2 (101) surfaces. , 2012, Chemphyschem : a European journal of chemical physics and physical chemistry.

[7]  Yan Zhao,et al.  Enhanced Photoactivity of V−N Codoped TiO2 Derived from a Two-Step Hydrothermal Procedure for the Degradation of PCP−Na under Visible Light Irradiation , 2011 .

[8]  A. Manivannan,et al.  Origin of photocatalytic activity of nitrogen-doped TiO2 nanobelts. , 2009, Journal of the American Chemical Society.

[9]  Xiaobo Chen,et al.  Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications. , 2007, Chemical reviews.

[10]  Guy Marin,et al.  Determination of the V2p XPS binding energies for different vanadium oxidation states (V5+ to V0+) , 2004 .

[11]  K. Ryu,et al.  High adsorption capacity of V-doped TiO2 for decolorization of methylene blue , 2012 .

[12]  Xiaoli Cui,et al.  Anodically grown Si–W codoped TiO2 nanotubes and its enhanced visible light photoelectrochemical response , 2012 .

[13]  Say Chye Joachim Loo,et al.  Superhydrophilicity-assisted preparation of transparent and visible light activated N-doped titania film. , 2010, Nanoscale.

[14]  N. English,et al.  First-principles calculation of nitrogen-tungsten codoping effects on the band structure of anatase-titania , 2009 .

[15]  Harland G. Tompkins,et al.  Titanium nitride oxidation chemistry: An x‐ray photoelectron spectroscopy study , 1992 .

[16]  P. Schmuki,et al.  Doped TiO2 and TiO2 nanotubes: synthesis and applications. , 2010, Chemphyschem : a European journal of chemical physics and physical chemistry.

[17]  Liu Huanbin,et al.  Preparation of nanometer crystalline TiO2 with high photo-catalytic activity by pyrolysis of titanyl organic compounds and photo-catalytic mechanism , 2005 .

[18]  Thuy-Duong Nguyen-Phan,et al.  Characterization of vanadium-doped mesoporous titania and its adsorption of gaseous benzene , 2011 .

[19]  Song Liu,et al.  Highly active V–TiO2 for photocatalytic degradation of methyl orange , 2009 .

[20]  Suhuai Wei,et al.  Band structure engineering of semiconductors for enhanced photoelectrochemical water splitting: The case of TiO 2 , 2010 .

[21]  Jiaguo Yu,et al.  Effect of Crystallization Methods on Morphology and Photocatalytic Activity of Anodized TiO2 Nanotube Array Films , 2010 .

[22]  L. Devi,et al.  A review on non metal ion doped titania for the photocatalytic degradation of organic pollutants under UV/solar light: Role of photogenerated charge carrier dynamics in enhancing the activity , 2013 .

[23]  R. Asahi,et al.  Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides , 2001, Science.

[24]  Jianjun Yang,et al.  Enhanced Visible Light Photocatalytic Activity for TiO2 Nanotube Array Films by Codoping with Tungsten and Nitrogen , 2013 .

[25]  Xiaoliang Liang,et al.  The remarkable effect of vanadium doping on the adsorption and catalytic activity of magnetite in the decolorization of methylene blue , 2010 .

[26]  Craig A. Grimes,et al.  High-rate solar photocatalytic conversion of CO2 and water vapor to hydrocarbon fuels. , 2009, Nano letters.

[27]  H. Sakai,et al.  Preparation of Highly Crystalline TiO2 Nanostructures by Acid-assisted Hydrothermal Treatment of Hexagonal-structured Nanocrystalline Titania/Cetyltrimethyammonium Bromide Nanoskeleton , 2010, Nanoscale research letters.

[28]  Xiujian Zhao,et al.  Low temperature fabrication of V-doped TiO2 nanoparticles, structure and photocatalytic studies. , 2009, Journal of hazardous materials.

[29]  Jiaguo Yu,et al.  Effect of calcination temperature on morphology and photoelectrochemical properties of anodized titanium dioxide nanotube arrays , 2010 .