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Method of loading titanium dioxide nanorod arrays on surface of titanium wire mesh

A nanorod array, titanium dioxide technology, applied in nanotechnology, chemical instruments and methods, nanotechnology and other directions for materials and surface science, to achieve the effect of low cost, simple and easy method, and strong bonding

Inactive Publication Date: 2013-01-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been reports on the deposition of titanium dioxide nanotube array films on titanium screens by electrochemical anodic oxidation technology, but there is no report on the deposition of titanium dioxide nanorod array films on titanium screens by direct solution oxidation.

Method used

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  • Method of loading titanium dioxide nanorod arrays on surface of titanium wire mesh
  • Method of loading titanium dioxide nanorod arrays on surface of titanium wire mesh
  • Method of loading titanium dioxide nanorod arrays on surface of titanium wire mesh

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Mix hydrofluoric acid with a concentration of 55%, nitric acid with a concentration of 65% and deionized water in a volume ratio of 1:3:6 to obtain a pickling solution;

[0040] 2) Add 0.67 ml of 63% nitric acid and 66.7 mg of hexamethylenetetramine to 50 ml of 20% hydrogen peroxide solution to obtain a reaction solution;

[0041] 3) Set the size to 2.5×2.5×0.01 (cm 3 ) After the metal titanium wire mesh is pickled with the above mixed acid, it is cleaned with deionized water in ultrasonic waves. Then immersed in the reaction solution of step 2), reacted at 80°C for 60 h;

[0042] 4) After the reaction, the titanium screen was washed with deionized water, dried, and placed in 80°C hot water with a pH value of 1.0 adjusted with hydrochloric acid. After reacting for 72 h, it was taken out, washed with deionized water, and dried to obtain a surface-loaded Titanium mesh of titania nanorod arrays.

[0043] Response result

[0044] The surface of the titanium mesh is u...

Embodiment 2

[0046] 1) Same as step 1 of Example 1);

[0047] 2) Add 0.80 ml of 63% nitric acid and 75.0 mg of hexamethylenetetramine to 50 ml of 20% hydrogen peroxide solution to obtain a reaction solution;

[0048] 3) Same as Step 3 of Example 1);

[0049] 4) After the reaction, the titanium mesh was washed with deionized water, dried, and placed in hot water at 80°C with a pH value of 2.0 adjusted with hydrochloric acid. After reacting for 60 h, it was taken out, washed with deionized water, and dried to obtain a surface-loaded Titanium mesh of titania nanorod arrays.

[0050] Response result

[0051] The surface of the titanium mesh is uniformly generated as figure 2 For the titania nanorod array shown, the nanorods have an average length of about 600 nm and an average diameter of 120 nm. The results of X-ray diffraction showed that the crystal structure of aligned titania nanorods supported on the surface of the titanium mesh was a mixed crystal phase of rutile and anatase (see ...

Embodiment 3

[0053] 1) Same as step 1 of Example 1);

[0054] 2) Same as Step 2 of Example 1);

[0055] 3) Same as Step 3 of Example 1);

[0056] 4) After the reaction, the titanium mesh was washed with deionized water, dried, and placed in hot water at 80°C with a pH value of 3.0 adjusted with hydrochloric acid. After reacting for 72 h, it was taken out, washed with deionized water, and dried to obtain a surface-loaded Titanium mesh of titania nanorod arrays.

[0057] Response result

[0058] The surface of the titanium mesh is uniformly generated as Figure 4 TiO2 nanorod array shown, the average diameter of the nanorods is 120 nm. The crystal structure of the aligned titanium dioxide nanorods supported on the surface of the titanium mesh is a mixed crystal phase of rutile and anatase (see Figure 5 ).

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Abstract

The invention provides a method of loading titanium dioxide nanorod arrays on a surface of a titanium wire mesh. The method uses a solution direct oxidation method, and comprises steps of: preparing a pickling solution, using nitric acid and hexamethylene tetramine, or nitric acid and melamine, or hydrogen peroxide solution as reaction solutions, performing pickling for the titanium wire mesh and then immersing in the reaction solution to react, putting into a hot water with a pH value of 1.0 to 3.0 adjusted by hydrochloric acid or into a hot water to react, taking out and drying to get the finished product. The method is simple, pollution-free and low in cost, and does not need templates and catalysts during the preparation process; and the obtained film can firmly combine with titanium substrates and can be widely used in fields of photocatalysis, photoelectrocatalysis, thin film solar cells, gas sensors, biological materials, etc.

Description

technical field [0001] The invention relates to a method for loading a titanium dioxide nanorod array on the surface of a titanium screen, which is suitable for application fields such as photocatalysis, photoelectrocatalysis, and photoanodes of thin-film solar cells. Background technique [0002] Titanium dioxide is rich in sources, stable in chemical properties, and resistant to light corrosion. It has potential applications in the fields of photocatalysis, photoelectrocatalysis, and thin-film solar cells. Due to its special size effect, titanium dioxide film with nano-ordered structure has high specific surface area, abundant surface catalytic activity, and excellent electron transfer performance, and has shown excellent photoelectric performance in the above applications. In the past forty years, a variety of technologies for depositing nano-structured titanium dioxide films such as nanowires and nanorods on conductive glass, ceramics and metal substrates have emerged. ...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J35/02B82Y40/00B82Y30/00
Inventor 吴进明蒋锐孙静
Owner ZHEJIANG UNIV
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