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Preparation method and application of hydrogenated titanium dioxide nanotube array film

A nanotube array and titanium dioxide technology, applied in the manufacture of discharge tubes/lamps, nanotechnology, cold cathode manufacturing, etc., can solve the problems of harsh equipment requirements, pollution of production equipment, high preparation temperature, etc. Inexpensive, highly reproducible results

Inactive Publication Date: 2016-01-27
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this growth method has the following technical difficulties in practical application: first, the preparation temperature is relatively high, and the requirements for the equipment are strict; second, the cracked acetylene will pollute the production equipment; finally, the opening electric field is still high
These technical difficulties will limit its application in display devices

Method used

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  • Preparation method and application of hydrogenated titanium dioxide nanotube array film
  • Preparation method and application of hydrogenated titanium dioxide nanotube array film
  • Preparation method and application of hydrogenated titanium dioxide nanotube array film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take industrial titanium sheets (purity 99.9%), and ultrasonically clean them in acetone, absolute ethanol and deionized water for 15 minutes respectively; The mixed solution composed of concentrated hydrochloric acid chemically polishes the cleaned titanium sheet for 180s; the titanium dioxide nanotube array film is grown on the surface of the polished titanium sheet at room temperature by constant voltage direct current anodizing method: graphite is the cathode, titanium sheet is the anode, and the two poles The distance between them is kept at 3cm, the electrolyte is ethylene glycol solution (analytical pure) containing 0.30wt.% ammonium fluoride and 0.03wt.% hydrofluoric acid, the oxidation voltage is 40V, the oxidation time is 500min, and a magnetic stirrer is used Stir the electrolyte to ensure that the temperature of the system and the electrolyte are uniform. After the oxidation is completed, take out the titanium sheet, rinse it with deionized water, and blow it...

Embodiment 2

[0040] Take industrial titanium sheets (purity 99.9%), and ultrasonically clean them in acetone, absolute ethanol and deionized water for 15 minutes respectively; The mixed solution composed of concentrated hydrochloric acid chemically polished the cleaned titanium sheet for 150s; using the constant voltage DC anodizing method, a titanium dioxide nanotube array film was grown on the surface of the polished titanium sheet at room temperature: graphite was used as the cathode, and the titanium sheet was used as the anode. The distance between the two poles is kept at 2cm, the electrolyte is ethylene glycol solution (analytical pure) containing 0.20wt.% ammonium fluoride and 0.05wt.% hydrofluoric acid, the oxidation voltage is 50V, the oxidation time is 600min, and it is stirred by magnetic force Stir the electrolyte to ensure that the temperature of the system and the electrolyte are uniform. After the oxidation is completed, take out the titanium sheet, rinse it with deionized w...

Embodiment 3

[0045]Take industrial titanium sheets (purity 99.9%), and ultrasonically clean them in acetone, absolute ethanol and deionized water for 15 minutes respectively; % concentrated hydrochloric acid to form a mixed solution to chemically polish the cleaned titanium sheet for 100s; use constant voltage direct current anodic oxidation method to grow titanium dioxide nanotube array film on the surface of the polished titanium sheet at room temperature: the graphite is the cathode, the titanium sheet is the anode, and the two poles The distance between them is kept at 5cm, the electrolyte is ethylene glycol solution (analytical pure) containing 0.25wt.% ammonium fluoride and 0.02wt.% hydrofluoric acid, the oxidation voltage is 30V, the oxidation time is 315min, and a magnetic stirrer is used Stir the electrolyte to ensure that the temperature of the system and the electrolyte are uniform. After the oxidation is completed, take out the titanium sheet, rinse it with deionized water, and ...

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Abstract

The invention provides a preparation method and application of a hydrogenated titanium dioxide nanotube array film field emitter. After the industrial titanium sheet is cleaned, it is chemically polished; then it is oxidized by a constant voltage DC anodic oxidation method at room temperature; After heat treatment in an atmosphere with hydrogen in the environment, stop feeding the hydrogen, and naturally cool to room temperature under an argon atmosphere to prepare a hydrogenated titanium dioxide nanotube array film. The hydrogenated titanium dioxide nanotube array film is directly used as a field electron emission cold cathode. The preparation method can prepare a titanium dioxide nanotube array film directly used as a field emission cold cathode with the characteristics of low open electric field, high emission current density, good field emission stability and high repeatability; it can be used in industrial production and can produce low-cost The cold cathode field emitter has good application prospects in field electron emission display cathode materials.

Description

technical field [0001] The invention belongs to the technical field of manufacturing field emission cathode materials, and relates to a method for preparing a field emitter, in particular to a method for preparing a hydrogenated titanium dioxide nanotube array film; the invention also relates to a method for using the nanotube array film as a field emitter Emitting cathode material applications. Background technique [0002] Field emission display has the advantages of low power consumption, high brightness, wide viewing angle, short response time, good stability, long life, full-color display, etc. It is a new type of flat panel display device with broad application prospects. Field emission cathode materials with excellent performance are one of the most critical technical supports for field emission displays to be widely used. Currently commonly used field emission cathode materials include carbon nanotubes, metal materials (Mo, W, Co, etc.), nitride materials (TiN, GaN,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26B82Y40/00H01J9/02
Inventor 王成伟朱卫东陈建彪李燕王建
Owner NORTHWEST NORMAL UNIVERSITY
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