Biosensor based on MBWO3 / Pt II-type heterojunction composite material as well as preparation method and application of biosensor

By using MB|WO3/PtⅡ-type heterojunction composite materials in the photoelectrochemical biosensor, the photogenerated electron-hole recombination or composite and photocorrosion problems of photoelectroactive materials in the prior art are solved, and a high sensitivity and stable photoelectrochemical biosensor is achieved.

CN119715729APending Publication Date: 2025-03-28GUANGXI NORMAL UNIV FOR NATITIES
1 Cites 0 Cited by

Patent Information

Application Number
CN202510065049.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Existing photoelectrochemical biosensors have serious problems in the selection of photoelectroactive materials, such as photogenerating electrons-hole recombination or recombination, and photocorrosion, which are difficult to meet performance requirements such as sensitivity.

Method used

Using a biosensor based on MB|WO3/PtⅡ-type heterojunction composite material, the charge carrier separation and transmission capacity are improved and the photoelectric conversion efficiency is improved by controlling the doping amount of Pt and introducing methylene blue (MB)-sensitized WO3/Pt composite material.

Benefits of technology

A highly sensitive photoelectrochemical biosensor is realized, which can effectively detect a variety of target molecules and has good photosensitive characteristics and stability.

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

Abstract

The invention belongs to the technical field of biosensors, and provides a biosensor based on an MBWO3 / Pt II-type heterojunction composite material as well as a preparation method and application of the biosensor. The biosensor is obtained by sequentially modifying the surface of an ITO substrate electrode with a WO3 / Pt composite material, chitosan, glutaraldehyde, a target molecule complementary chain, a target molecule aptamer and methylene blue. Wherein the WO3 / Pt composite material is obtained by carrying out a reaction on WO2.72 and H2PtCl6. 6H2O, and the mass ratio of the WO2.72 to the H2PtCl6. 6H2O is 1: (0.028 to 0.040). The photoactive material WO3 / Pt with better activity is obtained by controlling the doping amount of Pt, and the WO3 / Pt composite material is sensitized by methylene blue (MB), so that the obtained PEC biosensor has higher sensitivity and can be used for detecting various target molecules.
Need to check novelty before this filing date? Find Prior Art