Preparation and hydrogen gas sensitive characteristics of highly ordered titania nanotube arrays |
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Authors: | HuiMing Ji HuiXiang Lu DongFang Ma JianJun Yu ShiCai Ma |
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Institution: | (1) Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials of Tianjin University, Tianjin, 300072, China |
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Abstract: | In this paper, we report the growth and characteristics of titania nanotube arrays prepared by anodic oxidation and then annealed
in an oxygen atmosphere at 500°C. The titania nanotube arrays presented high sensitivity to hydrogen gas. The crystalline
phase of the samples was checked by X-ray diffraction (XRD). The differences in the nanotubes morphology attributed to the
etched samples due to anodization potential, reaction time and the electrolyte concentration were analyzed by scanning electron
microscopy (SEM). The gas sensitive parameters of the samples were obtained from resistance, the response time and the recovery
time at different temperatures. |
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Keywords: | titanium dioxide ordered nanotube arrays preparation hydrogen gas sensor |
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