Preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and ferroferric oxide nanoparticles

A technology of ferroferric oxide and nanoparticles, which is applied in the preparation of monodisperse superparamagnetic ferroferric oxide nanoparticles, in the field of monodisperse superparamagnetic ferroferric oxide nanoparticles, which can solve the problem of high energy consumption and long reaction time Long, large particle size control and other issues, to achieve the effect of simple preparation method, simple and convenient synthesis process, and mild process conditions
CN104649334AInactive Publication Date: 2015-05-27SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SUN YAT SEN UNIV
Publication Date
2015-05-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and the ferroferric oxide nanoparticles. The preparation method comprises the following steps: preparing the monodisperse super paramagnetic ferroferric oxide nanoparticles by using a solvothermal method; performing surfactant polyacrylic acid modification on the Fe3O4 magnetic particles by using a hydrothermal method; and finally, dispersing into deionized water to obtain the monodisperse super paramagnetic ferroferric oxide nanoparticles. The prepared monodisperse super paramagnetic ferroferric oxide nanoparticles are uniform in particle size distribution of magnetic particles with average particle size of 75 nm, uniform in features, high in magnetic property of the particles, high in dispersibility and high in superparamagnetism; moreover, the specific saturation magnetization intensity of the particles can reach 78 emu / g at a maximum. The preparation method of the monodisperse super paramagnetic ferroferric oxide nanoparticles is convenient and easy, low in production cost, can be widely applied to the fields of machines, electronics, optics, magnetism, chemical engineering, biology and the like, and particularly, has great prospect on application of anti-cancer medicines on transmission and releasing.
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Description

technical field

[0001] The invention relates to the preparation and surface modification technology of nanopowder, and more specifically, to a preparation method of monodisperse superparamagnetic ferriferrous oxide nanoparticles and the monodisperse superparamagnetic triiron tetroxide nanoparticle. Background technique

[0002] Magnetic nanoparticles are one of the research hotspots in the field of materials in the world today, and they are a class of functional materials with broad application prospects. Magnetic nanoparticles are the earliest applied magnetic nanomaterials, and are widely used in the fields of magnetic recording materials, preparation of magnetic fluids, and biomedicine. Among them, magnetic nanomaterials with biocompatibility and certain biomedical functions have the characteristics of small size effect, good magnetic orientation, biocompatibility, biodegradability and active functional groups. Due to the biological activity, affinity or reactivity of ma...

Claims

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