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Copper sulfide nano material with peroxidase-like characteristics, preparation method and application thereof

A technology of nanomaterials and oxidases, applied in the field of simulated enzymes, to achieve high sensitivity, good dispersibility, and good selectivity

Pending Publication Date: 2021-02-19
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no unmodified metallocompound enzymes have been used to visually detect Cr. 6+ s material

Method used

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  • Copper sulfide nano material with peroxidase-like characteristics, preparation method and application thereof
  • Copper sulfide nano material with peroxidase-like characteristics, preparation method and application thereof
  • Copper sulfide nano material with peroxidase-like characteristics, preparation method and application thereof

Examples

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preparation example Construction

[0036] The invention provides a method for preparing copper sulfide nanomaterials with peroxidase-like properties, comprising the following steps:

[0037] Mixing copper nitrate, thiourea and a reaction solvent to obtain a mixed solution; the reaction solvent is ethylene glycol and dimethyl sulfoxide;

[0038] The mixed solution is placed in a reaction kettle for solvothermal reaction to obtain copper sulfide nanomaterials with peroxidase-like properties.

[0039] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known to those skilled in the art.

[0040] The invention mixes copper nitrate, thiourea and a reaction solvent to obtain a mixed solution. In the present invention, the reaction solvent is ethylene glycol and dimethyl sulfoxide, and the volume ratio of ethylene glycol and dimethyl sulfoxide is preferably 1-5:1, more preferably 1-3:1. The invention controls the volume ratio of ethylene glycol and di...

Embodiment 1

[0062] 0.242g Cu(NO 3 ) 2 ·3H 2 O and 56mL reaction solvent mixed, stirred for half an hour; The reaction solvent was ethylene glycol and dimethyl sulfoxide with a volume ratio of 3:1; then 0.2283g thiourea was added to the solution and stirred for another half an hour to obtain a mixed solution; The mixed solution was put into a reaction kettle and reacted with solvothermal reaction at 150°C for 12 hours; after the reaction, the temperature was cooled to room temperature by self-heating, centrifuged, and the obtained solid matter was alternately washed 3 times with absolute ethanol and distilled water, and then heated at 70°C Vacuum drying for 20 hours and grinding to obtain copper sulfide nanomaterials.

[0063] The obtained copper sulfide nanomaterials are 3D petal-shaped sheets stacked, with a particle size of 1-3 μm and a specific surface area of ​​61 m 2 / g, with obvious pores on the surface.

Embodiment 2

[0065] The preparation method is basically the same as in Example 1, except that the volume ratio of ethylene glycol and dimethyl sulfoxide is changed from "3:1" to "1:1". The obtained copper sulfide nanomaterial is a 3D petal-shaped sheet stacked, with a particle size of 1-3 μm and a specific surface area of ​​42m 2 / g, with obvious pores on the surface.

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Abstract

The invention provides a copper sulfide nano material with peroxidase-like characteristics, a preparation method and application thereof, and relates to the technical field of mimic enzymes. The preparation method of the copper sulfide nano material comprises the following steps: mixing copper nitrate, thiourea and a reaction solvent to obtain a mixed solution, wherein the reaction solvent is ethylene glycol and dimethyl sulfoxide; and putting the mixed solution into a reaction kettle, and carrying out solvothermal reaction to obtain the copper sulfide nano material with peroxidase-like characteristics. According to the invention, the copper sulfide nano-material prepared by the method has the characteristic of good dispersibility in water, hydrogen peroxide and Cr<6+> are visually detected by adopting the copper sulfide nano material which is not modified by any group for the first time, and a convenient and rapid way is provided for trace hydrogen peroxide and Cr<6+> detection.

Description

technical field [0001] The invention relates to the technical field of simulated enzymes, in particular to a copper sulfide nanometer material with peroxidase-like properties, a preparation method and application thereof. Background technique [0002] Peroxidase is a class of H 2 o 2 Oxidoreductases, which are electron acceptors to catalyze the oxidation of substrates, like other natural enzymes, can catalyze reactions with high efficiency and high selectivity. However, their preparation and purification processes are time-consuming and labor-intensive, and there are defects such as high cost, poor high temperature resistance, and poor stability, which severely limit their practicality. Therefore, it is of great research value and application prospect to develop mimetic enzymes with catalytic activity similar to natural enzymes. [0003] Copper sulfide nanoparticles are an excellent peroxidase-like substance, which has the advantages of low preparation cost, adjustable ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12G01N21/78B82Y40/00
CPCC01G3/12G01N21/78B82Y40/00C01P2004/24C01P2004/50C01P2004/61C01P2006/12
Inventor 涂新满葛林红吴雨婕罗旭彪罗胜联
Owner NANCHANG HANGKONG UNIVERSITY