Iron monatomic bridged gold nano-enzyme as well as preparation method and application thereof

CN120900680APending Publication Date: 2025-11-07HUBEI UNIV OF TECH
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Patent Information

Application Number
CN202511015521.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-23
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Existing methods for detecting organophosphorus pesticides (OPs) using nanozymes with peroxidase-like activity suffer from poor accuracy and low sensitivity.

Method used

Using D(+)-glucosamine hydrochloride and iron source as precursor materials, and silica and zinc chloride as dual templates, FeNC material with good dispersibility was obtained through high-temperature pyrolysis and etching. Au nanoparticles were uniformly loaded on its surface to form iron single-atom bridged gold nanozymes, which were then used for detection by combining acetylcholinesterase and glucose.

Benefits of technology

It achieves high accuracy and sensitivity in the detection of organophosphorus pesticides under acidic conditions, and has good glucose oxidase and peroxidase-like activities, enabling effective detection of organophosphorus pesticides.

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Abstract

The invention discloses an iron monatomic bridged gold nano-enzyme as well as a preparation method and application thereof, and belongs to the technical field of nano-enzymes. D (+)-glucosamine hydrochloride and an iron source are used as precursor materials, silicon dioxide and zinc chloride are used as double templates, after high-temperature pyrolysis and etching treatment, a FeNC material with good dispersity is obtained, then Au nanoparticles are evenly loaded on the surface of the FeNC material, and the iron monatomic bridged gold nano-enzyme is obtained. The iron monatomic bridged gold nano-enzyme has good glucose oxidase (GOx)-like and peroxidase (POD)-like activity under the acidic condition, the iron monatomic bridged gold nano-enzyme is combined with acetylcholin esterase, glucose is added, OPs can be detected, and the iron monatomic bridged gold nano-enzyme has the advantages of being good in accuracy and high in sensitivity; therefore, the method has a relatively good application prospect in OPs detection.
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Citation Information

Cited By

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