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a fe 3 o 4 The preparation method of/graphene composite film

A graphene composite and graphene technology, which is applied in the manufacture of inductors/transformers/magnets, organic/organometallic films, and the application of magnetic films to substrates. performance, increasing the weight of components, etc., to achieve the effect of low power consumption, low cost and excellent performance

Inactive Publication Date: 2017-12-19
JILIN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage is that the relative density is high, which often increases the weight of the components, so that the overall performance of the components is affected. Another point is that the high-frequency absorbing effect needs to be improved.

Method used

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  • a fe <sub>3</sub> o <sub>4</sub> The preparation method of/graphene composite film
  • a fe <sub>3</sub> o <sub>4</sub> The preparation method of/graphene composite film
  • a fe <sub>3</sub> o <sub>4</sub> The preparation method of/graphene composite film

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Embodiment

[0032] a kind of Fe 3 o 4 The experimental conditions and parameters of the preparation method of graphene composite film are as follows:

[0033] 1) Put 1.5g NaNO in the Erlenmeyer flask 3 Dissolve in 69ml of concentrated sulfuric acid, add 2g of graphite, stir evenly; add KMnO in an ice-water bath 4 9g, ice-water bath for 12 hours; heat up to 35°C and keep the temperature for 1 hour; then heat up to 60°C and keep the temperature for 18 hours; cool to room temperature, add 200ml ice water to dilute evenly; add hydrogen peroxide drop by drop until the solution has no bubbles and the color turns bright Yellow; after standing for 24 hours, wash and centrifuge with 10% hydrochloric acid for 4 times, then wash and centrifuge with water for 3 times to obtain graphene oxide colloid; take a certain amount of colloid and dry to obtain graphene oxide, calculate the concentration of graphene oxide colloid, the concentration is 19.24mg / ml;

[0034] 2) Add 5ml of citric acid to 95ml...

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Abstract

The invention relates to a preparation method of an Fe<3>O<4> / graphene composite membrane. In summary, according to the method, by the process of mixing graphene oxide with Fe<3>O<4> nano-particles at a certain ratio to obtain a mixture solution, the Fe<3>O<4> / graphene composite membrane is prepared under drying and low-temperature stepped heating reduction conditions. The product prepared by the method is good in complex condition; the Fe<3>O<4> nano-particles are uniform to disperse; and the composite membrane has ferromagnetic property. The method disclosed by the invention is simple and easy to control; industrial production is facilitated; and the prepared self-supported composite membrane has a broad application prospect in the fields of information, electrons, energy, biology, military industry and the like.

Description

Technical field: [0001] The present invention relates to a kind of Fe 3 o 4 / The preparation method of graphene composite film, generally speaking, the present invention is the graphene oxide colloid and Fe 3 o 4 After the nanoparticles are uniformly mixed, a Fe 3 o 4 / The method of graphene composite film material. Background technique: [0002] With the continuous development and application of nanotechnology, nanomaterials have attracted more and more attention from scientific research institutions and manufacturers. The application range of magnetic nanoparticles is wider, covering electromagnetic compatibility technology, magnetic data storage, electrostatic printing technology, magnetic Resonance imaging, targeted drug delivery, biosensors, magnetothermal therapy, magnetic separation, immunoassay, etc. For a long time, nanometer-scale metal particles, such as Fe, FePt, FeCo and other alloys, are widely used in the biomedical field. They have very high saturation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/22H01F41/30H01F10/20
CPCH01F10/005H01F10/20H01F41/22H01F41/301
Inventor 王欣马存庆杨开宇
Owner JILIN UNIV
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