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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

Active Publication Date: 2018-08-10
芜湖启博知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium dioxide nanotubes prepared by hydrothermal method have the characteristics of thin tube wall, high aspect ratio and large specific surface, but because the tube diameter is very small, less than 10nm, it is undoubtedly necessary for the filling of precious metal silver nanoparticles in titanium dioxide nanotubes brought great difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a preparation method of silver filled titanium dioxide nanometer tubes. According to the method, a hydrothermal method is used for preparing titanium dioxide nanometer tubes; titanium dioxide nanometer tube particles are put into a tubular furnace; then, N2 is charged into the boiling CCl4 liquid; the generated mixed gas is guided into the tubular furnace; the nanometer silver is filled into the defect titanium dioxide nanometer tubes. According to the method, CCl4 is used for etching the titanium dioxide nanometer tubes; hollow hole defects are formed in the titanium dioxide nanometer tubes. The filling of the nanometer silver in the titanium dioxide nanometer tubes can be facilitated; the silver filled titanium dioxide nanometer tube material is obtained.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials and relates to an inorganic semiconductor titanium dioxide nanometer material, in particular to a method for preparing a silver-filled titanium dioxide nanotube. Background technique [0002] Titanium dioxide nanotubes with large specific surface area and hollow tubular structure are important inorganic functional semiconductor nanomaterials, which have good photoelectric, photosensitive, gas sensitive, pressure sensitive and other properties. And biological implant materials and so on have a wide range of applications. In recent years, the modification of titanium dioxide nanotubes modified by noble metal silver nanoparticles has received more attention. Noble metal silver nanoparticles composited with titania nanotubes can effectively capture photogenerated electrons, promote the separation of electrons and holes, and inhibit the recombination of photogenerated electrons-holes. In ...

Claims

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Application Information

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IPC IPC(8): B01J23/50B01J37/10B01J37/08B01J37/34B01J37/06B82Y30/00B82Y40/00
Inventor 袁求理
Owner 芜湖启博知识产权运营有限公司
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