Journal
APPLIED SURFACE SCIENCE
Volume 315, Issue -, Pages 131-137Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.07.040
Keywords
TiO2 nanotube arrays; TiO2 mesosponge; Hydrothermal method; N and V co-doping
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Funding
- Zhejiang Province Natural Science Foundation of China [LQ14E020006]
- Scientific Research Foundation of Ludong University [LY2014016]
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Novel N and V co-doped TiO2 mesosponge (N-V-TMSW) layers were successfully prepared by one-step hydrothermal treatment of TiO2 nanotube arrays, and the phase composition, morphology and optical property were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Atomic force microscope (AFM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffusion reflectance spectroscopy (DRS). The crystal structure and density of states were studied by means of the first-principle pseudo-potential plane wave. The results indicated that titanium ions and oxygen atoms in TiO2 were successfully substituted by vanadium ions and nitrogen atoms, respectively. The sample N-V0.1-TMSW showed a remarkable absorption in the visible light range of 400-600 nm and high visible photocatalytic activity (C) 2014 Elsevier B.V. All rights reserved.
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