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 oxida

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

Example Embodiment

[0038] Example 1

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

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

[0042] 4) The titanium wire mesh after the reaction was washed with deionized water. After drying, it was placed in hot water at 80°C with a pH of 1.0 adjusted with hydrochloric acid. After 72 hours of reaction, it was taken out, washed with deionized water, and dried to obtain a surface load. Titanium wire mesh of titanium dioxide nanorod array.

[0043] Reaction result

[0044] The surface of the titanium mesh is uniformly generated as figure ...

Example Embodiment

[0045] Example 2

[0046] 1) Same as Example 1 Step 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 Example 1 Step 3);

[0049] 4) The titanium wire mesh after the reaction is washed with deionized water, and after drying, it is placed in hot water at 80°C with a pH of 2.0 adjusted with hydrochloric acid. After 60 hours of reaction, it is taken out, washed with deionized water, and dried to obtain a surface load. Titanium wire mesh of titanium dioxide nanorod array.

[0050] Reaction result

[0051] The surface of the titanium mesh is uniformly generated as figure 2 In the titanium dioxide nanorod array shown, the average length of the nanorods is about 600 nm and the average diameter is 120 nm. The X-ray diffraction results show that the crystal structure of the oriented titanium dioxide nanorods supported on the surface of the titanium mesh is a mixed ph...

Example Embodiment

[0052] Example 3

[0053] 1) Same as Example 1 Step 1);

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

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

[0056] 4) The titanium mesh after the reaction was washed with deionized water. After drying, it was placed in hot water at 80°C with a pH of 3.0 adjusted with hydrochloric acid. After 72 hours of reaction, it was taken out, washed with deionized water, and dried to obtain a surface load. Titanium wire mesh of titanium dioxide nanorod array.

[0057] Reaction result

[0058] The surface of the titanium mesh is uniformly generated as Figure 4 In the titanium dioxide nanorod array shown, the average diameter of the nanorods is 120 nm. The crystal structure of the oriented titanium dioxide nanorods supported on the surface of the titanium mesh is a mixed 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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