Unlock instant, AI-driven research and patent intelligence for your innovation.

Intelligent surface structure with functions of resisting bacteria and resisting bacterial adhesion and application of intelligent surface structure

A technology of surface structure and adhesion, which can be applied to surface reactive electrolytic coatings, biocide-containing paints, antifouling/underwater coatings, etc. It can solve the problems of low catalytic sterilization efficiency and unfavorable release-type sterilization, and achieve excellent super-hydrophobicity. , The effect of promoting generation and separation, efficient solar photocatalytic sterilization performance

Pending Publication Date: 2022-03-01
GUANGZHOU UNIVERSITY
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The usual technical method is to construct a layer of superhydrophobic titanium dioxide surface with a combination of release-type sterilization and ultraviolet photocatalytic sterilization on titanium-based materials, which has been proved to be an effective anti-bacterial sticking strategy. The efficiency of catalytic sterilization is low, and the air layer formed on the superhydrophobic surface is not conducive to release-type sterilization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intelligent surface structure with functions of resisting bacteria and resisting bacterial adhesion and application of intelligent surface structure
  • Intelligent surface structure with functions of resisting bacteria and resisting bacterial adhesion and application of intelligent surface structure
  • Intelligent surface structure with functions of resisting bacteria and resisting bacterial adhesion and application of intelligent surface structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The smart surface structure provided in this example has antibacterial and synergistic anti-bacterial adhesion functions, which has the characteristics of photophobic / hydrophilic transition, and its preparation method includes the following steps:

[0050] (1) Anodize the titanium plate at a constant voltage of 40V for 2h to obtain the surface of the titanium dioxide nanotube array;

[0051] Wherein, the anodic oxidation is carried out in an electrolytic solution, the electrolytic solution is a mixed solution of ammonium fluoride, water and ethylene glycol, the mass fraction of ammonium fluoride is 0.65%, the volume fraction of water is 5%, ethylene glycol The volume fraction of alcohol is 95%;

[0052] (2) Place the surface of the titanium dioxide nanotube array obtained in step (1) in a muffle furnace, heat it to 400° C. and keep it warm for 2 hours, so that the titanium dioxide changes from an amorphous form to an anatase crystal form;

[0053] (3) Soak the surface ...

Embodiment 2

[0057] The smart surface structure with antibacterial and synergistic anti-bacterial adhesion function improved in this example has basically the same preparation method steps as in Example 1, the difference is:

[0058] The concentration of silver nitrate solution described in step (3) is 10mmol L -1 , the concentration of the hydrochloric acid solution is 20mmol L -1 .

Embodiment 3

[0060] The steps of the preparation method of the smart surface structure provided in this example with antibacterial and synergistic anti-bacterial adhesion functions are basically the same as those in Examples 1 and 2, except that:

[0061] (1) Anodize the titanium plate at a constant voltage of 40V for 2h to obtain the surface of the titanium dioxide nanotube array;

[0062] Wherein, the anodic oxidation is carried out in an electrolytic solution, the electrolytic solution is a mixed solution of ammonium fluoride, water and ethylene glycol, the mass fraction of ammonium fluoride is 0.65%, the volume fraction of water is 5%, ethylene glycol The volume fraction of alcohol is 95%;

[0063] (2) Place the surface of the titanium dioxide nanotube array obtained in step (1) in a muffle furnace, heat it to 400° C. and keep it warm for 2 hours, so that the titanium dioxide changes from an amorphous form to an anatase crystal form;

[0064] (3) Soak the surface of the anatase crysta...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an intelligent surface structure with antibacterial and bacterial adhesion prevention functions and application, and belongs to the technical field of novel intelligent materials and environmental protection. A layer of honeycomb porous anatase crystal form titanium dioxide nanotube array is constructed on a titanium substrate through an anodic oxidation method; then co-depositing a layer of Ag / AgCl composite nanoparticles capable of enhancing the sunlight photocatalytic sterilization performance and having a synergistic sterilization mechanism of releasing reactive oxygen species (ROS) and silver ions, and finally modifying a layer of super-hydrophobic fluorosilane molecular layer capable of preventing bacterial adhesion on the titanium dioxide nanotube array and the Ag / AgCl composite nanoparticles. The intelligent surface structure provided by the invention initially has super-hydrophobicity and is converted into super-hydrophilicity with better antibacterial performance when being excited by ultraviolet irradiation, the surface can be quickly recovered to super-hydrophobicity after being subjected to dark storage treatment, bacterial adhesion resistance is shown, and mutual conversion of hydrophobicity and hydrophilicity is realized. The method can be widely applied to the antibacterial field.

Description

technical field [0001] The invention relates to the field of novel intelligent materials and environmental protection technology, in particular to an intelligent surface structure and its application with the functions of antibacterial and synergistic anti-bacterial adhesion with photophobic / hydrophilic transformation. Background technique [0002] In recent years, titanium-based materials have been widely used in ships, aviation, construction, water purification, medical equipment and other fields. Bacterial adhesion on the surface of titanium-based materials can lead to problems such as corrosion of titanium metal, pipe blockage, transplantation infection, and bacterial and microbial contamination on the surface, causing huge economic losses to society and harm to human life and health. Bacterial adhesion technology has attracted much attention. [0003] The usual technical method is to construct a layer of superhydrophobic titanium dioxide surface with a combination of r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/14C09D183/08C23C18/08C23C18/12C25D11/26A61L2/232
CPCA61L2/232C25D11/26C23C18/08C23C18/1204C09D183/08C09D5/14
Inventor 林璟桂黎爽刘自力左建良王琪莹封天雨刘健伟李树立王思桃江文锋
Owner GUANGZHOU UNIVERSITY