Preparation method of nano silver particle loaded antimicrobial titanium dioxide coating

A technology of nano-silver particles and titanium dioxide is applied in the field of surface modification of biomedical materials, which can solve the problems of limited application of antibiotic-resistant strains, and achieve the effect of ensuring continuous silver ion release, good inhibition and good binding force.

Inactive Publication Date: 2015-06-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many different antibiotics have been tried for antimicrobial coatings, but the risk of antibiotic-resistant strains posed by the topical use of antibiotics severely limits their application

Method used

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  • Preparation method of nano silver particle loaded antimicrobial titanium dioxide coating
  • Preparation method of nano silver particle loaded antimicrobial titanium dioxide coating
  • Preparation method of nano silver particle loaded antimicrobial titanium dioxide coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Put 10×14×1mm 3 The pure titanium sheet is polished by 400#, 1200#, 2500# water sandpaper in turn until the surface is smooth without obvious defects. The polished samples were cleaned in de-ethanol and deionized water for 5 min, and dried at room temperature.

[0022] 2) Use ethylene glycol-water (1:1vol.%) to add 0.14MNH4F system as the electrolyte, set the anode voltage to 40V, and the oxidation time to 3h to prepare self-assembled TiO2 nanotubes. The oxidized sample was ultrasonically cleaned in absolute ethanol solution, then washed in deionized water and air-dried naturally.

[0023] 3) The dried sample is heat treated in a box furnace with a heating rate of 4°C / min, a holding temperature of 450°C, and a holding time of 1 hour.

[0024] 4) Add PVP to the mixed solution of water / ethylene glycol (volume ratio 1:1), stir for about 5 minutes to mix well, and then add sodium borohydride during the stirring process. After 1-2min, silver nitrate was added. The con...

Embodiment 2

[0026] 1) Put 10×14×1mm 3 The pure titanium sheet is polished by 400#, 1200#, 2500# water sandpaper in turn until the surface is smooth without obvious defects. The polished samples were cleaned in de-ethanol and deionized water for 5 min, and dried at room temperature.

[0027]2) Use ethylene glycol-water (1:1vol.%) to add 0.14MNH4F system as the electrolyte, set the anode voltage to 20V, and the oxidation time to 3h to prepare self-assembled TiO2 nanotubes. The oxidized sample was ultrasonically cleaned in absolute ethanol solution, then washed in deionized water and air-dried naturally.

[0028] 3) The dried sample is heat treated in a box furnace with a heating rate of 4°C / min, a holding temperature of 450°C, and a holding time of 1 hour.

[0029] 4) Add PVP to the mixed solution of water / ethylene glycol (volume ratio 1:1), stir for about 5 minutes to mix well, and then add sodium borohydride during the stirring process. After 1-2min, silver nitrate was added. The conc...

Embodiment 3

[0031] 1) Put 10×14×1mm 3 The pure titanium sheet is polished by 400#, 1200#, 2500# water sandpaper in turn until the surface is smooth without obvious defects. The polished samples were cleaned in de-ethanol and deionized water for 5 min, and dried at room temperature.

[0032] 2) Use ethylene glycol-water (1:1vol.%) to add 0.14MNH4F system as the electrolyte, set the anode voltage to 60V, and the oxidation time to 3h to prepare self-assembled TiO2 nanotubes. The oxidized sample was ultrasonically cleaned in absolute ethanol solution, then washed in deionized water and air-dried naturally.

[0033] 3) The dried sample is heat treated in a box furnace with a heating rate of 4°C / min, a holding temperature of 450°C, and a holding time of 1 hour.

[0034] 4) Add PVP to the mixed solution of water / ethylene glycol (volume ratio 1:1), stir for about 5 minutes to mix well, and then add sodium borohydride during the stirring process. After 1-2min, silver nitrate was added. The con...

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Abstract

The invention discloses a preparation method of nano silver particle loaded antimicrobial titanium dioxide coating. The preparation method comprises the following steps of preparing a titanium dioxide nanotube array on the surface of pure titanium by an anodic oxidation method, and then loading even silver nano particles on the surface and pipe wall of the titanium dioxide nanotube. Through loading the silver particles with nano structure on the titanium dioxide nanotube, the particles are even in size and moderate in content and are distributed uniformly; the combination force of the nano particles and the nanotube is better, the nano particles are not likely to wash out. The process is simple, the implementation cost is low, the antimicrobial effect is significant, and the preparation is valuable for popularization and application.

Description

technical field [0001] The invention relates to a surface antibacterial coating preparation technology, which is mainly used for surface modification of biomedical materials. Background technique [0002] In 1985, Japanese researchers first discovered that TiO2 has a bactericidal effect under ultraviolet light irradiation. Since then, the research and application of nano-iron dioxide as an antibacterial material has been very active, and the effect of iron dioxide on photocatalytic sterilization of bacteria, viruses, fungi, algae and cancer cells has been extensively studied. With the improvement of people's living standards, people pay more and more attention to the hygiene of working and living environments, thus promoting the research and development of materials with antibacterial functions, and various antibacterial products emerge as the times require. Among them, Ti02 antibacterial agent has been widely developed and applied in the field of antibacterial because of i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C25D11/26C23C18/44A61L27/06A61L27/30
Inventor 王志鸿杨贤金崔振铎朱胜利李朝阳梁砚琴
Owner TIANJIN UNIV
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