Preparation method of silver filled titanium dioxide nanometer tubes
A technology of titanium dioxide and nanotubes, which is applied in the field of nanomaterials and can solve problems such as the difficulty in filling precious metal silver nanoparticles
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Embodiment 1
[0020] Step (1). Prepare titanium dioxide nanotubes by hydrothermal method:
[0021] Add Degussa P-25 titanium dioxide nanoparticles into a plastic container filled with a 10M sodium hydroxide aqueous solution, stir and disperse, and then transfer to a stainless steel reactor lined with polytetrafluoroethylene for reaction at a temperature of 100°C , the reaction time was 30 hours; after the reaction was completed, it was cooled to room temperature, and the precipitate was collected by filtration, washed with deionized water, and calcined in a muffle furnace at 400° C. for 4 hours. Then, soak in 0.1M dilute nitric acid aqueous solution for 12 hours, then wash with deionized water until the solution pH=7, and dry in an oven to obtain titanium dioxide nanotube particles;
[0022] Step (2). The formation of titania nanotube defect:
[0023] TiO2 nanotube particles were placed in a tube furnace and then heated in boiling CCl 4 Fill the liquid with N 2 , the resulting mixed gas ...
Embodiment 2
[0027] Step (1). Prepare titanium dioxide nanotubes by hydrothermal method:
[0028] Add Degussa P-25 titanium dioxide nanoparticles into a plastic container filled with a 15M sodium hydroxide aqueous solution, stir and disperse, and then transfer to a stainless steel reactor lined with polytetrafluoroethylene for reaction at a temperature of 140°C , the reaction time was 15 hours; after the reaction was completed, it was cooled to room temperature, the precipitate was collected by filtration, washed with deionized water, and calcined in a muffle furnace at 500° C. for 2 hours. Then, soak in 0.1M dilute nitric acid aqueous solution for 24 hours, then wash with deionized water until the solution pH=7, and obtain titanium dioxide nanotube particles after drying in an oven;
[0029] Step (2). The formation of titania nanotube defect:
[0030] TiO2 nanotube particles were placed in a tube furnace and then heated in boiling CCl 4 Fill the liquid with N 2 , the resulting mixed ga...
Embodiment 3
[0034] Step (1). Prepare titanium dioxide nanotubes by hydrothermal method:
[0035] Add Degussa P-25 titanium dioxide nanoparticles into a plastic container filled with a 12M sodium hydroxide aqueous solution, stir and disperse, and then transfer to a stainless steel reactor lined with polytetrafluoroethylene for reaction at a temperature of 120°C , the reaction time was 20 hours; after the reaction was completed, it was cooled to normal temperature, the precipitate was collected by filtration, washed with deionized water, and calcined in a muffle furnace at 450° C. for 3 hours. Then, soak in 0.1M dilute nitric acid aqueous solution for 18 hours, then wash with deionized water until the solution pH=7, and obtain titanium dioxide nanotube particles after drying in an oven;
[0036] Step (2). The formation of titania nanotube defect:
[0037] TiO2 nanotube particles were placed in a tube furnace and then heated in boiling CCl 4 Fill the liquid with N 2 , the resulting mixed ...
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