Anatase titanium dioxide nanotube array with (001) crystal face preferred orientation and preparation method and application of anatase titanium dioxide nanotube array
A nanotube array, titanium dioxide technology, applied in nanotechnology, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problems of inability to obtain high-energy crystal plane preferential orientation, low surface energy, etc., to increase photoelectric conversion efficiency, large Specific surface area, low cost effect
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Embodiment 1
[0044] The preparation method of the anatase titania nanotube array with (001) crystal plane preferred orientation comprises the following steps:
[0045] 1) Using high-pressure torsion to prepare an ultra-fine-grained pure titanium material with a grain size of 140nm;
[0046] In the preparation process of the ultra-fine-grained pure titanium sample in step 1, a commercial pure titanium rod is selected as the initial sample, cut into a titanium sheet with a diameter of 10nm and a thickness of 0.81-0.85mm, and then undergoes high-pressure torsion processing, wherein the high-pressure torsion The pressure is 3GPa, the number of revolutions is 10 revolutions, and it is carried out at room temperature; the grain size after high-pressure torsion is about 140nm;
[0047] When preparing high-pressure torsion samples, the pure titanium rod can be cut into titanium sheets with a diameter of 10nm and a thickness of about 1mm by wire cutting, and then polished with sandpaper with a part...
Embodiment 2
[0058] The preparation method of the anatase titania nanotube array with (001) crystal plane preferred orientation comprises the following steps:
[0059] 1) The ultra-fine-grained pure titanium material with a grain size of 120nm was prepared by a high-pressure torsion method;
[0060] In the preparation process of the ultra-fine-grained pure titanium sample in step 1, a commercial pure titanium rod is selected as the initial sample, cut into a titanium sheet with a diameter of 10nm and a thickness of 0.81-0.85mm, and then undergoes high-pressure torsion processing, wherein the high-pressure torsion The pressure is 5GPa, the number of revolutions is 12 revolutions, and it is carried out at room temperature;
[0061] When preparing high-pressure torsion samples, the pure titanium rod can be cut into titanium sheets with a diameter of 10nm and a thickness of about 1mm by wire cutting, and then polished with sandpaper with a particle size between 400-800 mesh to further thin it ...
Embodiment 3
[0069] The preparation method of the anatase titania nanotube array with (001) crystal plane preferred orientation comprises the following steps:
[0070] 1) Preparation of ultra-fine-grained pure titanium material with a grain size of 110 nm by an equal channel angular extrusion method;
[0071] In the preparation process of the ultra-fine-grained pure titanium sample in step 1, a commercial pure titanium rod is selected as the initial sample, cut into a titanium sheet with a diameter of 10nm and a thickness of 0.81-0.85mm, and then carries out equal channel angular extrusion processing, wherein , the condition control of the equal-diameter channel angular extrusion is: the inner arc angle Φ and the outer arc angle ψ of the mold are both 90°-120°, the Bc process path is adopted, the pressure head speed is 10mm / s, and the processing temperature is 300°C;
[0072] When preparing the sample for equal channel angular extrusion, cut a round rod pure titanium sample with a length o...
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