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Preparation method of beta-cyclodextrin-modified magnetic nano particles

A magnetic nanoparticle and nanoparticle technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve environmental problems and affect the survival of aquatic organisms, etc.

Inactive Publication Date: 2015-02-18
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the azo dyes and some microorganisms can decompose the azo (N=N) group, resulting in the formation of aromatic amine products, most of which are toxic carcinogens, which will affect the survival of aquatic organisms and cause serious environmental problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Fe was synthesized by hydrothermal method 3 o 4 magnetic nanoparticles

[0014] First weigh 1g of FeCl 3 ·6H 2 O was placed in a beaker, poured 50ml of ethylene glycol, dissolved at room temperature, stirred and added 3g of anhydrous sodium acetate to the above solution, reacted in a high-pressure reactor, the reaction temperature was 220°C, and the time was 24h Take out, the prepared black The solid was washed with absolute ethanol and deionized water, and dried to obtain Fe 3 o 4 Nanoparticles;

[0015] (2) Synthesis of Fe 3 o 4 SiO 2 composite nanoparticles

[0016] Weigh ethanol and deionized water in a volume ratio of 4:1 in a round-bottomed flask, and the cleaned Fe of step (1) 0.02g 3 o 4 The nanoparticles were evenly dispersed in the mixed solution after ultrasonic treatment, and then continued to add 10ml of sodium silicate solution dropwise to the mixed system, and introduced CO 2 Gas, stirred at room temperature for 6-12h, stop stirring, apply...

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PUM

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Abstract

The invention relates to a preparation method of beta-cyclodextrin-modified magnetic nano particles. A composite nano microsphere with a nuclear-shell structure is prepared. The composite nano microsphere with certain adsorption property is prepared by synthesizing magnetic ferroferric oxide nano particles by a hydrothermal method, then wrapping the nano particles by a layer of SiO2 by taking sodium silicate obtained by rice shell hydrolysis as a silicon source and modifying the surface by beta-CD. The composite nano microsphere has superparamagnetism with the magnetic particles and has subjective and objective clathration on cyclodextrin supermolecules; the nano microsphere with Fe3O4@SiO2 / beta-CD has great action on the environmental pollution treatment aspect under the excellent superparamagnetism and the supermolecule clathration.

Description

technical field [0001] The invention relates to the preparation of a magnetic nanoparticle modified by β-cyclodextrin, in particular to preparing a composite nano-particle with a core-shell structure, and then modifying β-CD on its surface to obtain a magnetic nanoparticle with a certain adsorption capacity. Research methods of magnetic nanospheres. Background technique [0002] In the past few decades, magnetic nanoparticles have been applied in many different fields, such as traditional electricity, optics, magnetism, etc., and applications in new fields include magnetic-assisted bioseparation and biocatalysis, adsorption of toxic anions, cations, and metal ions , such as arsenic (V), chromium (VI) and U (VI). In addition, magnetic nanoparticles show broad application prospects in biomedical fields such as magnetic living labeling, cell tracking, and enzyme loading. The application of magnetic nanoparticles has become one of the most attractive and dynamic research field...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30
CPCB01J20/24B01J20/0229B01J20/06B01J20/103B01J20/28009B01J20/28021B01J2220/46B01J2220/4806B01J2220/4812
Inventor 曲玉宁方升关会兰
Owner TIANJIN POLYTECHNIC UNIV
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