title: Nitrogen-doped TiO2 nanotube array films with enhanced photocatalytic activity under various light sources.
abstract: Highly ordered nitrogen-doped titanium dioxide (N-doped TiO(2)) nanotube array films with enhanced photocatalytic activity were fabricated by electrochemical anodization, followed by a wet immersion and annealing post-treatment. The morphology, structure and composition of the N-doped TiO(2) nanotube array films were investigated by FESEM, XPS, UV-vis and XRD. The effect of annealing temperature on the morphology, structures, photoelectrochemical property and photo-absorption of the N-doped TiO(2) nanotube array films was investigated. Liquid chromatography and mass spectrometry were applied to the analysis of the intermediates coming from the photocatalytic degradation of MO. The experimental results showed that there were four primary intermediates existing in the photocatalytic reaction. Compared with the pure TiO(2) nanotube array film, the N-doped TiO(2) nanotubes exhibited higher photocatalytic activity in degradating methyl orange into non-toxic inorganic products under both UV and simulated sunlight irradiation.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Yue-Kun
authors.initials: YK
authors.lastname: Lai
authors.affiliation: Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
authors.forename: Jian-Ying
authors.initials: JY
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Hui-Fang
authors.initials: HF
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Vishnu-Priya
authors.initials: VP
authors.lastname: Subramaniam
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Yu-Xin
authors.initials: YX
authors.lastname: Tang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Dang-Guo
authors.initials: DG
authors.lastname: Gong
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Latha
authors.initials: L
authors.lastname: Sundar
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Lan
authors.initials: L
authors.lastname: Sun
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Zhong
authors.initials: Z
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. Electronic address: cjlin@xmu.edu.cn.
authors.forename: Chang-Jian
authors.initials: CJ
authors.lastname: Lin
mesh_terms: D002384:Catalysis; D002853:Chromatography, Liquid; D013058:Mass Spectrometry; D008855:Microscopy, Electron, Scanning; D043942:Nanotubes; D009584:Nitrogen / Q000737:chemistry*; D010777:Photochemistry; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen