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Preparation method of silver-modified crystal form titanium dioxide nanotube layer

A titanium dioxide and nanotube technology, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem that silver-modified nanotubes cannot be modified at the same time, and can achieve good apatite The ability of stone deposition and the effect of antibacterial and biocompatibility improvement

Inactive Publication Date: 2018-11-16
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem in the prior art that the modification of silver-modified nanotubes cannot carry out crystal transformation at the same time, and provides a method for preparing a silver-modified crystal-type nanotube layer on the surface of medical titanium to fill the technical gap

Method used

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  • Preparation method of silver-modified crystal form titanium dioxide nanotube layer
  • Preparation method of silver-modified crystal form titanium dioxide nanotube layer
  • Preparation method of silver-modified crystal form titanium dioxide nanotube layer

Examples

Experimental program
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Effect test

Embodiment 1

[0019] (1) Mechanically polish the medical pure titanium sample, and then ultrasonically clean it with acetone, alcohol and deionized water for 20 minutes to obtain a smooth and clean surface;

[0020] (2) Preparation of anodic oxidation electrolyte: ethylene glycol is used as a solvent, an ammonium fluoride solution with a concentration of 0.3mol / L is prepared, and deionized water with a volume percentage of 2% is added;

[0021] (3) Using anodic oxidation technology, prepare a titanium dioxide nanotube array layer on the surface of medical pure titanium. The process parameters are: medical pure titanium is used as the anode, graphite sheet or platinum sheet is used as the cathode, the anodic oxidation voltage is 40V, and the oxidation time is 1 hour;

[0022] (4) After preparation of the titanium dioxide nanotube array layer on the surface of medical pure titanium, it was ultrasonicated in ethanol for 10 s, then washed with deionized water for 5 minutes, and dried naturally. ...

Embodiment 2

[0029] (1) Mechanically polish the medical pure titanium sample, and then ultrasonically clean it with acetone, alcohol and deionized water for 20 minutes to obtain a smooth and clean surface;

[0030] (2) Preparation of anodic oxidation electrolyte: ethylene glycol as solvent, prepare ammonium fluoride solution with a concentration of 0.3mol / L and add deionized water with a volume percentage of 2%;

[0031] (3) Using anodic oxidation technology, prepare a titanium dioxide nanotube array layer on the surface of medical pure titanium. The process parameters are: medical pure titanium is used as the anode, graphite sheet or platinum sheet is used as the cathode, the anodic oxidation voltage is 40V, and the oxidation time is 1 hour;

[0032] (4) After preparation of the titanium dioxide nanotube array layer on the surface of medical pure titanium, it was ultrasonicated in ethylene glycol for 10 s, then washed with deionized water for 5 minutes, and dried naturally.

[0033] (5) P...

Embodiment 3

[0036] (1) Mechanically polish the medical pure titanium sample, and then ultrasonically clean it with acetone, alcohol and deionized water for 20 minutes to obtain a smooth and clean surface;

[0037] (2) Preparation of anodic oxidation electrolyte: ethylene glycol as solvent, prepare ammonium fluoride solution with a concentration of 0.3mol / L and add deionized water with a volume percentage of 2%;

[0038] (3) Using anodic oxidation technology, prepare a titanium dioxide nanotube array layer on the surface of medical pure titanium. The process parameters are: medical pure titanium is used as the anode, graphite sheet or platinum sheet is used as the cathode, the anodic oxidation voltage is 40V, and the oxidation time is 1 hour;

[0039] (4) After preparation of the titanium dioxide nanotube array layer on the surface of medical pure titanium, it was ultrasonicated in ethylene glycol for 10 s, then washed with deionized water for 5 minutes, and dried naturally.

[0040] (5) P...

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Abstract

The invention relates to a preparation method of a silver-modified crystal form titanium dioxide nanotube layer. The preparation method comprises the following three steps: constructing one titanium dioxide nanotube layer on a medical pure titanium surface through constant-voltage anodic oxidation; putting a prepared titanium dioxide nanotube array layer into a centrifugal tube filled with a silver nitrate solution and centrifuging to obtain a titanium dioxide nanotube array layer which is loaded with silver nitrate through centrifugal adsorption; decomposing the silver nitrate in the titaniumdioxide nanotube array layer which is loaded with the silver nitrate through the centrifugal adsorption through heat treatment, and transforming titanium dioxide to an anatase type titanium dioxide nanotube array layer from an amorphous crystal form. According to the preparation method provided by the invention, a prepared silver-modified crystal form titanium dioxide array realizes the combination of a nanotube shale, a specific crystal form type and silver modification; the silver-modified crystal form titanium dioxide array layer has good apatite deposition capability and antibacterial performance in an induction process of simulated body fluid, so that the aims of improving the biocompatibility of the medical titanium surface and carrying out surface modification of the antibacterialperformance on the medical titanium surface are realized.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide nanotube array layer, in particular to the preparation of a silver-modified crystal form titanium dioxide nanotube array layer, and belongs to the field of surface modification of medical materials. Background technique [0002] Titanium and its alloys are widely used in the repair and replacement of bone tissue, but the biological inertia of titanium itself restricts its clinical application. Infection is the main reason for the failure of clinical implant surgery, and it is also a problem that titanium-based implants must face. Therefore, it is necessary to modify the surface of titanium to improve its biocompatibility and antibacterial properties. The anodic oxidation method has attracted widespread attention because it can prepare titanium dioxide nanotubes on the titanium surface that are comparable to the nanoscale of natural bone tissue. The microscopic morphology of this nanot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/06A61L27/30A61L27/54A61L27/50C25D11/26B82Y40/00B82Y30/00
CPCA61L27/06A61L27/306A61L27/50A61L27/54A61L2300/104A61L2300/404A61L2400/12A61L2400/18A61L2430/02B82Y30/00B82Y40/00C25D11/26
Inventor 李宝娥马建威郝静祖周琳熙李海鹏梁春永王洪水
Owner HEBEI UNIV OF TECH
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