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A kind of ferric oxide micro-nano material, preparation method and application thereof

A ferric tetroxide, micro-nano technology, applied in the directions of iron oxide/iron hydroxide, nanotechnology, ferrous oxide, etc., can solve the problems of easy agglomeration and oxidation, complicated preparation process, and many raw materials added, etc. Achieve mild reaction conditions, good magnetic properties, and less use of raw materials

Active Publication Date: 2018-05-08
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, the above preparation methods have the following disadvantages: 1. The reagents and drugs used in the preparation process are highly toxic and unfriendly to the environment; 2. The synthesis of self-assembled structures is often prepared by step-by-step reactions or template methods, and the steps are complicated and require Harsh; 3. The product is impure, easy to agglomerate and oxidize, and has poor magnetic properties; 4. The preparation process is complicated and raw materials are added, resulting in high cost and difficult to promote and industrialize

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  • A kind of ferric oxide micro-nano material, preparation method and application thereof
  • A kind of ferric oxide micro-nano material, preparation method and application thereof
  • A kind of ferric oxide micro-nano material, preparation method and application thereof

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Embodiment 1

[0036] A preparation method of iron ferric oxide micro-nano material, the steps comprising:

[0037] A. Preparation of mixed solvent:

[0038] Mix 37 volumes of water with 3 volumes of glycerin, and magnetically stir for 30 minutes to prepare a uniform mixed solvent.

[0039] B, preparation of ferroferric oxide micro-nano material:

[0040] Dissolve a certain amount of potassium ferricyanide in the above-mentioned 40 volumes of mixed solvent, and magnetically stir to form an orange-yellow solution with a concentration of 0.02mol / L. Transfer the obtained solution to a polytetrafluoroethylene reactor, seal it, and React in an oven at 180°C for 5 hours;

[0041] C. Washing and drying:

[0042] After the above is finished, cool naturally to room temperature, centrifuge the product, wash the product 3-5 times with deionized water and ethanol, and dry it in vacuum at 60°C to constant weight to obtain ferric oxide micro-nano material.

[0043]The prepared ferroferric oxide micro-...

Embodiment 2

[0047] A preparation method of iron ferric oxide micro-nano material, the steps comprising:

[0048] A. Preparation of mixed solvent:

[0049] Mix 38 volumes of water with 2 volumes of glycerin, and magnetically stir for 30 minutes to prepare a uniform mixed solvent.

[0050] B, preparation of ferroferric oxide micro-nano material:

[0051] Dissolve a certain amount of potassium ferricyanide in the above-mentioned 40 volume mixed solvent, fully magnetically stir to form an orange-yellow solution with a concentration of 0.025mol / L, transfer the above-obtained solution to a polytetrafluoroethylene reactor, seal it, React in an oven at 170°C for 20 hours.

[0052] C. Washing and drying:

[0053] After the above, naturally cool to room temperature, centrifuge the product, wash the product several times with deionized water and ethanol, and vacuum-dry it at 65°C to constant weight to obtain ferric oxide micro-nano material.

[0054] The prepared ferroferric oxide micro-nano mat...

Embodiment 3

[0056] A preparation method of iron ferric oxide micro-nano material, the steps comprising:

[0057] A. Preparation of mixed solvent:

[0058] Mix 35 volumes of water with 5 volumes of glycerin, and magnetically stir for 30 minutes to prepare a uniform mixed solvent.

[0059] B, preparation of ferroferric oxide micro-nano material:

[0060] Dissolve a certain amount of potassium ferricyanide in the above-mentioned 40 volume mixed solvent, fully magnetically stir to form an orange-yellow solution with a concentration of 0.04mol / L, transfer the above-obtained solution to a polytetrafluoroethylene reactor, seal it, React in an oven at 190°C for 4 hours.

[0061] C. Washing and drying:

[0062] After the above, naturally cool to room temperature, centrifuge the product, wash the product several times with deionized water and ethanol, and dry it in vacuum at 55°C to constant weight to obtain ferric oxide micro-nano material.

[0063] The prepared ferroferric oxide micro-nano ma...

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Abstract

The invention provides a ferroferric oxide micro-nano material as well as a preparation method and application thereof. The preparation method comprises the steps of dissolving potassium ferricyanide into a mixed solvent of water and glycerin, and preparing a three-dimensional self-assembling spherical structure based on ferroferric oxide by virtue of a one-time solvothermal method, wherein the core of the spherical structure is formed by nanoparticles, the surface of an outer layer of a sphere is formed by polyhedral nanosheets through embedding and interweaving, and the diameter of the sphere is 1-3 microns. Compared with the prior art, the preparation method has the advantages that a synthetic method is extremely simple, the cost is low, the preparation is finished by one step, the operation is simple, the reproducibility is high, and the three-dimensional self-assembling spherical structure can be obtained under the action of glycerin. The ferroferric oxide micro-nano material has the characteristics of uniform size, high purity, low cost, easiness in industrial production and the like. The ferroferric oxide micro-nano material prepared by virtue of the preparation method presents excellent performance in the aspect of energy storage of lithium ion batteries and has potential practical application values.

Description

technical field [0001] The invention belongs to the technical field of magnetic micro-nano material preparation, and in particular relates to a ferric oxide micro-nano material, a preparation method and an application thereof. Background technique [0002] As an important magnetic material, ferroferric oxide micro-nano material is widely used in many fields because of its excellent magnetic properties, such as: magnetic fluid generators, biomedicine, microwave adsorption, magnetic imaging, magnetic Record storage devices, catalysts and carriers, etc. [0003] At present, the methods for preparing ferric oxide include sol-gel, thermal decomposition, co-precipitation and other methods. Solvothermal method is a recently developed simple preparation method with good controllable operation, and its preparation technology has been greatly developed in recent years. For example, Li et al. (Angew.Chem.Int.Ed.2005,44,2782–2785) used ferric chloride as an iron source, ethylene glyco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/08B82Y40/00H01M4/52H01M10/0525
CPCC01G49/08C01P2002/30C01P2002/72C01P2002/80C01P2004/03C01P2004/32C01P2004/61C01P2006/42C01P2006/80H01M4/523H01M10/0525Y02E60/10
Inventor 吴孔林蔡亚苗刘坤魏先文吴昕华姚心宇陈琨明江
Owner ANHUI NORMAL UNIV
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