Method for preparing anatase TiO2 single crystal
An anatase and single crystal technology, applied in the field of preparing anatase TiO2 single crystal, can solve the problems of expensive raw materials, limited development and large-scale use
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Embodiment 1
[0019] Weigh TiO 2 Put 0.1 gram of powder into 40ml of deionized water, 1ml of hydrofluoric acid solution with a mass fraction of 40%, stir for 10 minutes, and react for 5 hours at 180°C in a polytetrafluoro-lined hydrothermal reactor; After finishing, cool to room temperature; Then take 5ml TiO 2 HF acid solution, mixed with 22ml deionized water and 3ml hydrogen peroxide solution with a mass fraction of 30%, stirred for 10 minutes, then put into a reaction kettle with polytetrafluoroethylene lining, and reacted for 10 hours at 180°C; the reaction was completed Finally, the product was washed with deionized water several times until the pH value reached 7; finally, the product was placed in an oven at 80°C for 10 hours to dry the product.
[0020] The product obtained in this implementation case is anatase TiO with a larger (001) surface area. 2 single crystal.
[0021] figure 1 a and figure 1 b shows the anatase TiO with larger (001) surface area prepared in this example...
Embodiment 2
[0023] Weigh TiO 2 Put 0.01 g of powder into 5 ml of deionized water, 0.05 ml of hydrofluoric acid solution with a mass fraction of 40%, stir for 10 minutes, and react for 10 hours at 60°C in a polytetrafluoro-lined hydrothermal reactor; After completion of the reaction, cool to room temperature; then take 1mlTiO 2 HF acid solution, mixed with 5ml deionized water and 0.1ml hydrogen peroxide solution with a mass fraction of 30%, stirred for 10 minutes, put into a reaction kettle lined with polytetrafluoroethylene, and reacted at 200°C for 1 hour; the reaction was completed Finally, the product was washed with deionized water several times until the pH value reached 7; finally, the product was baked in an oven at 100°C for 5 hours to dry the product.
[0024] The product obtained in this implementation case is anatase TiO with a larger (001) surface area. 2 single crystal.
[0025] image 3 Shown is the anatase TiO with larger (001) surface area prepared in this example 2 A...
Embodiment 3
[0027] Weigh TiO 2 1 gram of powder is dropped into 80ml of deionized water and 10ml of hydrofluoric acid solution with a mass fraction of 40%. After stirring for 10 minutes, it is reacted for 10 hours at 100°C in a polytetrafluoro-lined hydrothermal reactor; After finishing, cool to room temperature; Then take 15mlTiO 2 HF acid solution, mixed with 80ml deionized water and 5ml hydrogen peroxide solution with a mass fraction of 30%, stirred for 10 minutes, put into a reaction kettle lined with polytetrafluoroethylene, and reacted at 150°C for 20 hours; after the reaction was completed , the product was rinsed with deionized water several times until the pH value reached 7; finally, the product was baked in an oven at 50° C. for 24 hours to dry the product.
[0028] The product obtained in this implementation case is anatase TiO with a larger (001) surface area. 2 single crystal.
[0029] Figure 4 Shown is the anatase TiO with larger (001) surface area prepared in this exa...
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Abstract
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