Titanium oxide/tungsten oxide nano-composite film on surface of metallic titanium, preparation and application
A nanocomposite, metal titanium technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, chemical/physical process, physical/chemical process catalyst, etc., can solve complex process, poor bonding force between film layer and substrate , large interfacial resistance, etc., to achieve the effects of electron transport, good photocatalysis, and good contact
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Embodiment 1
[0024] The preparation method of the titanium oxide / tungsten oxide nanocomposite film on the surface of metal titanium comprises the following steps:
[0025] (1) Cut the pre-polished and cleaned titanium metal sheet into a size of 4cm×4cm, etch it with hydrofluoric acid / nitric acid, take it out, wash it with deionized water and dry it in the air. (2) Immerse the clean metal titanium sheet in a closed reactor containing 50 ml of oxidizing solution of 1% peroxytungstic acid and 5% hydrogen peroxide, and keep it in an oven at 80° C. for 12 hours. (3) After taking out the oxidized metal titanium sheet, washing and drying, in a pure oxygen atmosphere, the temperature was raised to 500°C at 1°C / min and baked for 12 hours to prepare a titanium oxide / tungsten oxide nanocomposite film. SEM images of the film surface are shown in figure 1 , the nanostructure of the oxide can be clearly distinguished as a flower-like structure assembled by nanoribbons. Among them, titanium oxide is ma...
Embodiment 2
[0027] The preparation method of the titanium oxide / tungsten oxide nanocomposite film on the surface of metal titanium comprises the following steps:
[0028] (1) Cut the pre-polished and cleaned titanium sheet into a size of 2cm×2cm, etch it with hydrofluoric acid / nitric acid, take it out, wash it with deionized water and dry it in the air. (2) Immerse the clean metal titanium sheet in a closed reactor containing 20 ml of 0.5% peroxytungstic acid and 5% hydrogen peroxide oxidation solution, (3) keep it in an oven at 80°C for 72 hours. The titanium oxide / tungsten oxide nanocomposite film can be prepared by taking out the oxidized metal titanium sheet, washing and drying it, and then heating it up to 600°C at a rate of 5°C / min for 2 hours in an air atmosphere. figure 2 It is the Raman spectrum of the film surface, which can distinguish the anatase TiO 2 and hex WO 3 characteristic Raman peaks.
Embodiment 3
[0030] The preparation method of the titanium oxide / tungsten oxide nanocomposite film on the surface of metal titanium comprises the following steps:
[0031](1) Cut the pre-polished and cleaned titanium metal sheet into a size of 1cm×1cm, etch it with hydrofluoric acid / nitric acid, take it out, wash it with deionized water and dry it in the air. (2) Immerse the clean metal titanium sheet in a closed reactor containing 10 ml of 5% peroxytungstic acid and 1% hydrogen peroxide oxidation solution, and keep it in an oven at 100° C. for 12 hours. (3) After taking out the oxidized metal titanium sheet, washing and drying, in an oxygen atmosphere, the temperature was raised to 400°C at 0.5°C / min and baked for 3 hours to prepare a titanium oxide / tungsten oxide nanocomposite film.
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