Treatment method for antibacterial functionalization of surface of medical titanium alloy material

By constructing TiO2 nanosheets/W18O49 quantum dot heterojunctions on the surface of medical titanium alloys and generating ROS using photodynamic therapy, the problem of easy infection on the surface of medical titanium alloy implants was solved, achieving highly efficient antibacterial properties and reducing the risk of postoperative infection.

CN122344722APending Publication Date: 2026-07-07HUAIYIN INSTITUTE OF TECHNOLOGY
0 Cites 0 Cited by

Patent Information

Application Number
CN202610480333.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-13
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing medical titanium alloy implants are prone to bacterial infections, especially staphylococcal infections, which can lead to postoperative inflammatory reactions and implant dysfunction. Current disinfection methods are insufficient to completely prevent postoperative infections.

Method used

A TiO2 nanosheet/W18O49 quantum dot heterojunction was constructed on the surface of a medical titanium alloy. Photodynamic therapy was used to generate ROS for antibacterial purposes. TiO2 nanosheets were formed by hydrothermal oxidation, and W18O49 quantum dots were deposited on them to form a heterojunction to suppress electron-hole recombination and improve catalytic efficiency.

Benefits of technology

It achieves a highly efficient sterilization effect. Under near-infrared light, the TiO2/W18O49 heterojunction material can efficiently generate ROS, which significantly improves antibacterial performance and reduces the risk of postoperative infection.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a treatment method for antibacterial functionalization of the surface of a medical titanium alloy material, which comprises the following steps: firstly, constructing a TiO2 nanosheet on the surface of the titanium alloy material through hydrothermal oxidation and high-temperature sintering treatment, then depositing W18O49 quantum dots on the TiO2 nanosheet, and constructing a TiO2 / W18O49 heterojunction on the surface of the titanium alloy. The TiO2 / W18O49 heterojunction can efficiently catalyze and generate reactive oxygen species (ROS) under the irradiation of near-infrared light, so that an antibacterial function is realized. According to the TiO2 / W18O49 heterojunction functionalized titanium alloy material surface prepared through the method, the contact area between the material surface and a surrounding solution can be greatly increased through the irregular sheet structure of the TiO2 nanosheets, in addition, W18O49 quantum dots with the size of 2-4 nm have the characteristic of being similar to monatomic catalysis, the ROS yield is increased, and then the medical titanium alloy surface is endowed with extremely high photodynamic antibacterial performance.
Need to check novelty before this filing date? Find Prior Art