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Electrochemically derived partially ruptured TiO2 nanotubes, under the influence of a high anodization voltage, was synthesized and tested for potential gas sensor application. Low voltage anodization (20 V) resulted in free-standing pristine nanotube array formation, whereas high anodization voltage (60 V) ruptured the nanotubular structure due to existence of high electric field. From the field...
We report the hydrogen sensing properties of a sensor using TiO2 nanotube arrays. The TiO2 nanotube arrays were fabricated by anodization on titanium foil, in an electrolyte containing 0.5 wt% hydrofluoric acid mixed with water, the electric potential being 15V. TiO2 nanotube arrays were annealed at 600 Celsius for 1 h. The sensors were equipped with platinum electrodes. These two were connected with...
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