A kind of synthesis method of magnetic phosphorescent microcystin imprinting material

A technology of microcystin and imprinting material, which is applied in the field of synthesizing magnetic phosphorescent microcystin imprinting material, can solve the problem that the imprinting material does not have detection function and the like, and achieve the effect of high selectivity and high affinity

Active Publication Date: 2019-02-01
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods of molecular imprinting on the surface of magnetic nanoparticles can separate targets from complex sample systems. However, since the imprinted materials themselves do not have detection functions, it is often necessary to use the characteristics of the target itself or indirect methods to evaluate the imprinting effect.

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  • A kind of synthesis method of magnetic phosphorescent microcystin imprinting material
  • A kind of synthesis method of magnetic phosphorescent microcystin imprinting material

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preparation example Construction

[0023] A method for synthesizing a magnetic phosphorescent microcystin imprinting material according to an embodiment of the present invention, the method comprising:

[0024] (1) Add a crosslinking agent to the aqueous solution of magnetic nanoparticles, mechanically stir for 10-15h, then add Mn-doped ZnS quantum dots, continue stirring for 2-24h, and cross-link the magnetic nanoparticles and Mn-doped ZnS phosphorescent quantum dots Obtain a nanocomposite material; remove the Mn-doped ZnS phosphorescent quantum dots that are not cross-linked with the magnetic nanoparticles by magnetic separation;

[0025] (2) Dissolve the nanocomposite material and algae toxin obtained in step (1) in water, ultrasonic 2-20min, then add polyethyleneimine and crosslinking agent, continue to stir for 2-24h, the nanocomposite material in the The excess amino groups on the surface of the phosphorescent quantum dots are cross-linked with the amino groups of polyethyleneimine, the surface of the mag...

Embodiment 1

[0034] Embodiment 1 of the present invention The synthesis method of magnetic phosphorescent microcystin imprinting material comprises the following steps: (1) Synthesis of magnetic nanoparticles by hydrothermal method: 0.15g of ferric chloride is added to 50mL of ethylene glycol solution, and then 1g of Sodium acetate and 0.25 g of polyethyleneimine with a molecular weight of 1800 were stirred for 1 h to obtain a homogeneous solution, and then the solution was transferred to a reaction kettle and reacted at 200 ° C for 8 h. After the reaction, it was cooled, washed three times with water and once with ethanol, and dried in vacuum to obtain dry powder of magnetic nanoparticles. figure 1 It is an electron micrograph of the magnetic nanoparticle of the embodiment of the present invention.

[0035] (2) Synthesis of amino-modified Mn-doped ZnS quantum dots: (a) in a 100mL three-necked flask, 50mmol Zn(Ac) 2 and 5mmol Mn(Ac) 2 Sonicate to dissolve in 40ml deionized water. Under ...

Embodiment 2

[0040] Example 2 of the present invention The synthesis method of the magnetic phosphorescent microcystin imprinting material comprises the following steps:

[0041] (1) Synthesis of magnetic nanoparticles by hydrothermal method: 0.4g of ferric chloride is added to 50mL of ethylene glycol solution, then 3g of sodium acetate and 0.8g of polyethyleneimine with a molecular weight of 6000 are added, and the solution is magnetically stirred for 1h. A homogeneous solution was obtained, and then the solution was transferred to a reaction kettle, and reacted at 150° C. for 7 hours. After the reaction, it was cooled, washed three times with water and once with ethanol, and dried in vacuum to obtain dry powder of magnetic nanoparticles.

[0042] (2) Synthesis of amino-modified Mn-doped ZnS quantum dots: (a) in a 100mL three-necked flask, 30mmol Zn(Ac) 2 and 3mmol Mn(Ac) 2 Sonicate to dissolve in 30ml deionized water. Under magnetic stirring at room temperature, after nitrogen protect...

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Abstract

The invention provides a synthesis method for magnetic phosphorescence microcystic toxin imprinted materials. The synthesis method includes the steps: (1) adding cross-linking agents into a water solution of magnetic nano-particles, mechanically stirring mixture, adding Mn doped ZnS phosphorescence quantum dots, stirring the mixture, cross-liking the magnetic nano-particles and the Mn doped ZnS phosphorescence quantum dots to obtain nano-composites, and magnetically separating the nano-composites; (2) dissolving the nano-composites and microcystic toxins into water, performing ultraphonic on mixture, adding polyethyleneimine and cross-linking agents, stirring the mixture, enabling the surfaces of the magnetic nano-particles in the nano-composites to form first-layer microcystic toxin imprinted materials, magnetically separating and purifying the first-layer microcystic toxin imprinted materials, and repeating the step (2) N times or more for the first-layer microcystic toxin imprinted materials; (3) reflowing multilayer microcystic toxin imprinted materials, extracting template molecule microcystic toxins, and drying the extracted template molecule microcystic toxins to obtain microcystic toxin molecule imprinted nano-composites. The materials have magnetic separation and enrichment, phosphorescence detection and catalysis and cleaning effects on target microcystic toxins.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for synthesizing a magnetic phosphorescent microcystin imprinted material. Background technique [0002] Magnetic nanoparticles (MNP) is a new type of nano-magnetic material. Compared with ordinary magnetic particle materials, it has the unique properties of nano-materials: its particle size is small and its specific surface area is large, so its selective adsorption capacity is increased and its adsorption balance is stable. The time is greatly shortened; it has good magnetic response and superparamagnetism, and can be aggregated and positioned under a magnetic field; its physical and chemical properties are stable, it has certain mechanical strength and chemical stability, and can withstand a certain concentration of acid-base solution and microorganisms degradation; by modifying its surface with functional groups with various activities, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K9/04C08K3/30C08K3/22C08J3/24C08J9/26
CPCC08J3/24C08J9/26C08J2201/0424C08J2379/02C08K3/22C08K3/30C08K9/04C08K2003/2265C08K2003/3036C08L79/02
Inventor 何瑜宋功武
Owner HUBEI UNIV
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