Influence of annealing temperature on photoelectronic properties and wettability of TiO2 nanotube arrays

TiO2 nanotube arrays (TNs) were prepared by anodization of titanium foil and then annealed at different temperatures (300°C, 400°C, 500°C, 600°C, and 800°C). The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible spectroscopy (UV-Vis)....

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-01, Vol.711 (1)
Main Authors: Yang, Lei, Bao, Yu, Li, Chaoqian, Zhang, Yajuan, Zhao, luyao, Wang, Zixiu, Sun, Yiwen, Lin, Minghuang
Format: Article
Language:English
Subjects:
Absorbance
Anatase
Annealing
Arrays
Contact angle
Crystal structure
Crystallization
Low temperature
Metal foils
Mixed crystals
Morphology
Nanotubes
Photoelectric effect
Photoelectric emission
Temperature
Titanium dioxide
Wettability
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Summary:TiO2 nanotube arrays (TNs) were prepared by anodization of titanium foil and then annealed at different temperatures (300°C, 400°C, 500°C, 600°C, and 800°C). The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible spectroscopy (UV-Vis). Effect of annealing temperature on crystalline structures, morphology, photoelectronic properties, and wettability has been investigated. The results indicate that low temperature (below 500°C) has no obvious influence on surface morphology, while amorphous phase changes into anatase phase and rutile phase. The ultraviolet absorbance decreases while the visible light absorbance slightly increases with the increase of annealing temperature. At 500°C, the TNs show the highest photocurrent and maximum light-induced contact angle change, which are ascribed to their good crystallization, mixed crystal structure, and nanotubular structure.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/711/1/012077