Hollow copper sulphide/polypyrrole nanometer compound and application thereof

A technology of pyrrole nanometer and copper sulfide, which is applied in the field of nanomaterials, can solve the problems that limit the practical application and promotion of nanometer analog enzymes, FeS nanoparticles are not stable, and are susceptible to air oxidation, and achieve a short color development time and a wide range of applications. , The effect of chemical activity stabilization

Inactive Publication Date: 2014-08-27
FUZHOU UNIV
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Problems solved by technology

However, these nanomaterials mimic enzymes still have some defects, for example, a single Fe 3 0 4 The peroxidase activity of magnetic nanoparticles is much lower than that of horseradish peroxidase, and FeS nanoparticles are not stable and susceptible to air oxidation, which leads to changes in their catalytic activity. These factors greatly limit the size of nanomimetic enzymes. Scale practical application and promotion

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  • Hollow copper sulphide/polypyrrole nanometer compound and application thereof
  • Hollow copper sulphide/polypyrrole nanometer compound and application thereof
  • Hollow copper sulphide/polypyrrole nanometer compound and application thereof

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Embodiment Construction

[0026] A hollow copper sulfide / polypyrrole nanocomposite with peroxidase-like activity is to use an oxidant to oxidize and polymerize a layer of polypyrrole on the surface of hollow copper sulfide nanoparticles;

[0027] The specific preparation method includes: using cuprous oxide as a template, adding sodium sulfide to sulfide cuprous oxide, gradually forming hollow copper sulfide through the Kirkendall effect, and then adding pyrrole monomer and oxidant to oxidize and polymerize the pyrrole monomer to form a polypyrrole shell layer.

[0028] The oxidizing agent is ammonium persulfate;

[0029] The particle size of the hollow copper sulfide nanoparticles is 100nm;

[0030] The polymerization is carried out at room temperature;

[0031] The thickness of the polypyrrole shell layer on the surface is controlled at 5-10nm.

[0032] The obtained hollow copper sulfide / polypyrrole composite aqueous solution was ultrasonically treated for 0.5h, then dropped on the copper grid, dr...

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Abstract

The invention discloses a hollow copper sulphide / polypyrrole nanometer compound which has activity similar to peroxidase, can generate hydroxyl radicals with strong oxidizability by catalyzing H2O2, and is applicable to detection and analysis of glucose content in food and blood, or oxidation degradation of organic pollutants in sewage. The nanometer compound of the present invention combines the advantages of copper sulphide and polypyrrole; after compounding, the concerted catalysis effect of the hollow copper sulphide / polypyrrole nanometer compound is obviously better than only copper sulphide particles or polypyrrole particles; the compound has the significant advantages of high catalytic efficiency, short developing time, few using amount, stable chemical activity, wide application scope, and the like, can be used as a substitute for natural peroxidase, and is applicable to detection of glucose content in food and biology, and oxidation degradation of organic pollutants in environmental sewage.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a hollow copper sulfide / polypyrrole nanocomposite with peroxidase-like activity and an application thereof. Background technique [0002] Since Yan Xiyun's research group discovered Fe 3 0 4 Since nanoparticles have peroxidase-like properties, the study of nanoparticles as peroxide mimetic enzymes has attracted extensive attention. Since then, many different types of nanoparticles such as Au, Pt, CeO 2 , FeS, CuO, CuS nanosheets, carbon quantum dots, carboxylated carbon nanotubes, etc. have been continuously found to have peroxide mimetic enzyme activity. Compared with natural enzymes, nanoparticle peroxide mimetic enzymes have the advantages of high stability, simple preparation, and high catalytic activity, and have broad application prospects in biological analysis and wastewater treatment. However, these nanomaterials mimic enzymes still have some defects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K3/30B01J31/28G01N21/78C02F1/72C02F101/30
Inventor 朱春玲李子彬占红梅谢增鸿
Owner FUZHOU UNIV
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