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Method for preparing Ag-carried titanium dioxide nanotubes

A titanium dioxide and nanotube technology, which is applied in the field of preparation of Ag-loaded titanium dioxide nanotubes, can solve the problems of easy recombination of photogenerated electrons and holes, TNTs can not meet actual needs, and affect the utilization rate of solar energy.

Inactive Publication Date: 2016-03-02
姜丹宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TNTs has a large forbidden band width, the light absorption is limited to the ultraviolet range, and the photogenerated electron-holes are easy to recombine, which affects the utilization rate of solar energy, so that TNTs cannot meet the actual needs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing Ag-loaded titanium dioxide nanotubes, comprising the steps of:

[0019] (1) Take 2g rutile phase nano-TiO 2 After the raw materials and 80mL NaOH solution (10mol L-1) were mixed evenly, they were transferred into a 100mL autoclave lined with polytetrafluoroethylene, sealed and placed in an oven, and heated at 110°C for 24h.

[0020] (2) Then cool naturally at room temperature, wash the product with deionized water until neutral, then add 0.1mol L-1HCl solution, ultrasonically disperse for 3min, wash with distilled water until neutral, filter and store in an oven

[0021] Dry at 60°C, and store the product in a desiccator sealed.

[0022] (3) Put 0.2g of the prepared TNTs in a 100mL flat-bottomed flask, add 20mL of ethylene glycol, add a small amount of NaOH solution, adjust the pH value to 8, ultrasonically disperse for 30min, and then add 5mL of saturated AgNO 3 Absolute ethanol solution, placed in a constant temperature water bath at 50°C for ...

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PUM

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Abstract

The invention provides a method for preparing Ag-carried titanium dioxide nanotubes. Rutile phase titanium dioxide (TiO2) powder serves as a raw material, titanium dioxide nanotubes (TNTs) are synthesized through the hydrothermal method and react with an ethylene glycol solution of AgNO3 under the alkaline condition, and the surface Ag-carried titanium dioxide nanotubes (Ag / TNTs) are obtained. The Ag / TNTs presents high absorbing performance in a visible light area. Methyl orange photocatalytic degradation experiment results show that the photocatalytic activity of the Ag / TNTs is remarkably improved compared with that of the rutile phase titanium dioxide powder and pure TNTs.

Description

technical field [0001] The invention relates to a method for preparing Ag-loaded titanium dioxide nanotubes. Background technique [0002] TiO 2 As an important inorganic material, it has a wide range of applications in the industrial field. Since Fujishima reported irradiated TiO in photovoltaic cells in 1972 2 After the continuous water redox reaction can occur on the semiconductor electrode, the TiO 2 The photocatalytic oxidation technology of semiconductor materials has developed rapidly, especially in the field of photocatalytic degradation of environmental organic pollutants, which has attracted great attention of researchers. relative to TiO 2 Nanopowders, titanium dioxide nanotubes (TNTs) have larger specific surface area, special surface area and pore volume, and exhibit unique physical and chemical properties, so they have attractive application prospects in the field of photoelectric conversion and photocatalysis. [0003] The commonly used methods for prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/50
Inventor 姜丹宁
Owner 姜丹宁