TiO2 nanometer pore array material preparation method and uses thereof

A nanopore array, titanium-based technology, applied in the growth of polycrystalline materials, chemical instruments and methods, crystal growth, etc., can solve the problems affecting the stability of titanium-based TiO nanotube array materials, photoelectric catalytic performance, electrochemical performance and related properties. , nanotube array film and substrate peeling, nanotube and substrate cracking or breaking, etc., to achieve the effect of shortened migration path, good optoelectronic and electrical properties, and strong mechanical force

Inactive Publication Date: 2008-11-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes new types of tungsten oxide that are stronger than traditional catalyst supports like platinum or silicon carbons due to its small size and unique crystal structures. These special compounds have many advantages over other commonly known substances such as ceramics for various applications including use in electronic devices and medical equipment.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the durability, chemical resistance, moisture sensing capacity, optical property, electrical conductivity, electronic conduction efficiency, photosensitive response, light generating function, dielectic effects, etc., which can be applied across various industries such as environment cleanliness monitoring systems, sensor devices, biomedical engineering, and others.

Method used

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  • TiO2 nanometer pore array material preparation method and uses thereof
  • TiO2 nanometer pore array material preparation method and uses thereof
  • TiO2 nanometer pore array material preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The cleaned pure titanium sheet (>99.9%) is used as an anode, and the platinum sheet is used as a counter electrode, and placed in a hydrofluoric acid-dimethylsulfoxide electrolyte solution containing 5 wt% of fluorine (mass ratio, the same as in the following examples) Anodize the titanium sheet. The applied voltage is 40V, and the anodizing time is 70h. After the preparation, the titanium sheet is removed, and the excess loose film on the surface of the titanium sheet is removed by ultrasonic method, and TiO with a pore diameter of about 180nm and a pore depth of about 55nm can be obtained. 2 Nanohole array structure, its surface morphology can be seen in figure 1 .

[0019] Sinter the material at a temperature range of 450°C for 3 hours, and anatase phase TiO can be obtained after cooling 2 Nanopore array electrode materials, see image 3 c.

Embodiment 2

[0021] The cleaned pure titanium sheet (>99.9%) is used as an anode, and the platinum sheet is used as a counter electrode, and is placed in a hydrofluoric acid-dimethyl sulfoxide electrolyte solution containing 5 wt% of fluorine for anodic oxidation. The applied voltage is 60V, and the anodizing time is 75h. After the preparation, the titanium sheet is removed, and the loose film on the surface of the titanium sheet is removed by mechanical vibration, and TiO with a pore diameter of about 300nm and a pore depth of 100nm can be obtained. 2 Nanohole array material, pores deep figure 2 .

[0022] The sample was sintered in the temperature range of 300 °C for 15 hours, and the anatase phase TiO could be obtained after cooling 2 Nanopore array electrode materials.

Embodiment 3

[0024] The cleaned pure titanium sheet (>99.9%) is used as an anode, and the platinum sheet is used as a counter electrode, which is placed in a hydrofluoric acid-dimethylformamide electrolyte containing 1% fluorine for anodic oxidation. The applied voltage is 20V, and the anodizing time is 40h. After the preparation, the titanium sheet is removed, and the loose film on the surface layer of the titanium sheet is removed by ultrasonic method, and TiO with a pore diameter of about 80nm and a pore depth of 25nm can be obtained. 2 Nanopore Array Materials.

[0025] The sample was sintered at 700°C for 0.5h, and after cooling, TiO in the rutile phase was obtained. 2 Nanopore array electrode materials.

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Abstract

The invention relates to a method for making a TiO2 nano hole array material and an application thereof. Firstly, a titanium plate undergoes surface treatment and is used as an anode, and in the organic electrolyte solution of hydrofluoric acid or fluoride with the fluorine content of between 0.1 and 10wt%, the titanium plate undergoes the anode oxidation under the voltage of between 10 and 80V for 20 to 100h; after a loose film layer on surface of titanium metals is removed, the titanium based titanium oxide nano hole array materials formed by titanium metals and titanium oxides on titanium surface are obtained with the pore diameter of the materials is between 60 and 400, and the pore depth is between 10 to 250nm; the materials are sintered at the temperature of between 300 and 700DEG C for 0.5 to 1.5h, and the TiO2 nano hole array materials with a certain crystalline phase composition are obtained. The TiO2 nano hole array material of the invention has the advantages that the TiO2 is firmly connected with a matrix, so that the material is strong in withstanding external mechanical acting forces and resisting the stress deformation and cracking caused by the change of ambient temperature; moreover, the material is high in stability, therefore the material is widely applied to such fields as chemical oxygen demand sensors used in photoelectrocatalysis and water pollution monitoring.

Description

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Claims

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Application Information

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Owner SHANGHAI JIAO TONG UNIV
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