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Method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface

A nanorod array, titanium dioxide technology, applied in titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problem of titanium dioxide nanorod size, density difficult to control, long reaction time, low efficiency of titanium dioxide nanorod array, etc. problem, to achieve the effect of good crystallization, simple operation and easy industrialization

Inactive Publication Date: 2012-11-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of these methods to prepare titania nanorod arrays is not high, the reaction time required for the reaction is long, and the size and density of titania nanorods are difficult to control

Method used

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  • Method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface
  • Method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface
  • Method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Grind and polish the surface of the titanium metal sheet with 2000-4000 mesh sandpaper, and then clean it with deionized water in an ultrasonic wave; heat-treat the polished titanium metal sheet at 500°C for 30 minutes to obtain an anatase crystal phase on the surface Seed titanium metal sheet; dissolve 0.23g of picric acid in 8ml of ethanol, add 30ml of deionized water, 20ml of hydrochloric acid, and 0.42ml of tetrabutyl titanate in sequence to obtain a hydrothermal solution; put the heat-treated titanium metal sheet into Add the prepared hydrothermal solution into the hydrothermal kettle with polytetrafluoroethylene liner. The hydrothermal reaction was maintained at 160°C for 6h. Then the titanium metal sheet is taken out, rinsed with deionized water, and dried to obtain nanorods with a size of 100 nm and a density of 1×10 on the surface of the titanium metal. 14 / m 2 TiO2 nanorod arrays (see figure 1 ).

Embodiment 2

[0026] Grind and polish the surface of the titanium metal sheet with 2000-4000 mesh sandpaper, and then clean it with deionized water in an ultrasonic wave; heat-treat the polished titanium metal sheet at 800°C for 30 minutes to obtain rutile crystal phase seeds on the surface Titanium metal sheet; Dissolve 0.35g of picric acid in 12ml of ethanol, add 45ml of deionized water, 30ml of hydrochloric acid, 0.63ml of tetrabutyl titanate in sequence to obtain a hydrothermal solution; put the heat-treated titanium metal sheet into polytetrafluoroethylene Add the configured hydrothermal solution into the hydrothermal kettle with the vinyl fluoride liner. The hydrothermal reaction was maintained at 160°C for 6h. Then the titanium metal sheet was taken out, rinsed with deionized water, and dried to obtain nanorods with a size of 400 nm and a density of 1×10 on the surface of the titanium metal. 12 / m 2 TiO2 nanorod arrays (see figure 2 ).

Embodiment 3

[0028] Grind and polish the surface of the titanium metal sheet with 2000-4000 mesh sandpaper, and then clean it with deionized water in an ultrasonic wave; dissolve 0.46g of picric acid in 16ml of ethanol, add 60ml of deionized water and 40ml of hydrochloric acid in sequence, and obtain hydrothermal Solution 1: Put the polished titanium sheet into a hydrothermal kettle with a polytetrafluoroethylene liner, add the prepared hydrothermal solution 1; keep the hydrothermal reaction at 160°C for 3 hours, then take out the titanium metal sheet, Rinse with deionized water and dry to obtain a titanium metal sheet containing anatase and rutile crystal seeds on the surface; dissolve 0.23g of picric acid in 8ml of ethanol, add 30ml of deionized water, 20ml of hydrochloric acid, and 0.21ml of titanium Acid tetrabutyl ester, get hydrothermal solution two; Put the titanium metal sheet after hydrothermal solution one treatment into the hydrothermal still of polytetrafluoroethylene liner, add...

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Abstract

The invention discloses a method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface. Firstly, titanium surface in situ forms a seed crystal containing at least one of crystalline phase seed crystal and rutile crystalline phase seed crystal, and the titanium dioxide nano rod array is obtained by growing with the hydrothermal process. The titanium dioxide nano rod array prepared with the method of the invention regularly grows at a fixed direction, nano rod size is 10-500nm, density is controllable between 1*1012 / m2 and 5*1014 / m2, and the titaniumsubstrate is tightly combined with the nono rod. The invention is suitable for fields, such as photocatalysis material energy environment, bone tissue repairing material biomedicine and the like.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide nanorod array on a titanium metal surface, in particular to a method for preparing a titanium dioxide nanorod array with adjustable size and density on a titanium metal surface. Background technique [0002] Due to its good stability, photocatalytic performance and biological activity, titanium dioxide thin films are widely used in the fields of photocatalytic materials for energy and environment, bone tissue repair materials for biomedicine and other fields. Compared with other titanium dioxide micro-nano structures (nano-dots, nanotubes, etc.), the titanium dioxide nanorod structure has more surface areas for further functional modification, which means more active functional groups, forming a higher catalytic activity or biological A surface with properties such as chemical responsiveness. The preparation of titanium dioxide nanorod arrays with adjustable nanorod size and density pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/16C30B29/62C30B7/10C23C18/04C23C18/12C01G23/053
Inventor 翁文剑董灵庆程逵宋晨路沈鸽杜丕一韩高荣
Owner ZHEJIANG UNIV