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Method for preparing hollow spherical ferroferric oxide nano material

A technology of ferric tetroxide and nanomaterials, which is applied in nanostructure manufacturing, iron oxide/ferric hydroxide, nanotechnology and other directions, can solve the problems of limiting the application research of magnetic hollow ferric tetroxide and the cumbersome preparation method, and achieves good results. Stable and reproducible effect

Inactive Publication Date: 2010-04-28
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tediousness of the above-mentioned preparation methods has limited the application research of magnetic hollow Fe3O4 to a certain extent.
At present, no template, no surfactant, one-step preparation of nano-Fe3O4 hollow spheres has not been reported

Method used

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  • Method for preparing hollow spherical ferroferric oxide nano material
  • Method for preparing hollow spherical ferroferric oxide nano material
  • Method for preparing hollow spherical ferroferric oxide nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1. Preparation of hollow spherical ferric oxide nanomaterial

[0016] First weigh 20mmol of ferric chloride hexahydrate, dissolve it in 40ml of ethylene glycol, stir to obtain a uniform reddish-brown solution, add 40mmol of anhydrous sodium acetate to the solution, ultrasonicate and stir to obtain a uniform yellow-brown solution. Transfer the above solution to a hydrothermal kettle liner with a total volume of 50ml (made of polytetrafluoroethylene), cover the reaction kettle, react in a constant temperature oven at 200°C for ten hours, cool to room temperature naturally, take out the sample, wash with water, The product was obtained after washing several times with ethanol. Characterized by X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), the results show that the prepared sample is ferric oxide (see figure 1 A and figure 1 B). Scanning electron microscope (SEM) and transmission electron microscope (TEM) characterize, the result s...

Embodiment 2

[0017] Embodiment 2. Preparation of hollow spherical ferric oxide nanomaterials

[0018] Change "40ml ethylene glycol" in Example 1 to "80ml diethylene glycol", and other preparation conditions are the same as in Example 1, to obtain a product similar to Example 1 in appearance and properties.

Embodiment 3

[0019] Embodiment 3. Preparation of hollow spherical ferric oxide nanomaterials

[0020] "20mmol ferric chloride hexahydrate" of embodiment 1 is changed into "10mmol ferric chloride hexahydrate", 40mmol anhydrous sodium acetate is changed into "20mmol anhydrous sodium acetate", and "40ml ethylene glycol" is changed into "20ml ethylene glycol". Diol", the other conditions of preparation are the same as in Example 1, and the product whose appearance and properties are similar to Example 1 is obtained.

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Abstract

The invention discloses a method for preparing a hollow spherical ferroferric oxide nano material, which comprises the following steps: dissolving ferric chloride hexahydrate in glycol or diethylene glycol and stirring the solution uniformly, wherein the dosage of the glycol or diethylene glycol is 1 to 4 milliliters of glycol or diethylene glycol per millimol of ferric chloride hexahydrate; dissolving anhydrous sodium acetate or sodium succinate or a mixture of anhydrous sodium acetate and sodium succinate in any ratio in solution prepared by the step 1 and stirring the mixed solution with ultrasonic waves to obtain uniform yellow brown sticky solution, wherein the mass ratio of the anhydrous sodium acetate or sodium succinate to the ferric chloride hexahydrate is 1:1 to 4:1; and transferring solution obtained by the step 2 to a liner of a water hydrothermal kettle, closing the kettle for reaction at 180 to 220 DEG C for 6 to 16 hours, naturally cooling the resulting product to room temperature, taking a sample out of the kettle and washing the sample with water and ethanol sequentially to obtain the hollow spherical ferroferric oxide nano material.

Description

technical field [0001] The invention relates to a preparation method of a hollow spherical ferric oxide nanometer material. Background technique [0002] As a kind of magnetic nanomaterial, ferroferric oxide has very important uses in many aspects, such as in catalysis, it can be used as a carrier of active substances, recycled, and the cost of catalysis can be reduced; in biotechnology, it can be used for the treatment of diseases. Track targeting, clinical diagnosis, hyperthermia, magnetic labeling, magnetic resonance imaging, etc. In addition, it can also be used in data storage, environmental pollution control, military and other fields. In view of the above reasons, ferric oxide has been extensively studied [see: (a) Ge, J.P.; Hu, Y.X.; Biasini, M.; Beyermann, W.P.; Yin, Y.D.Angew.Chem.Int.Ed.2007, 46, 4342. (b) Nam, J.-M.; Thaxton, C.S.; Mirkin, C.A. Science 2003, 301, 1884. (c) Gao, L.Z.; Zhuang, J.; Nie, L.; Zhang, J.B.; Zhang, Y.; Gu, N.; Wang, T.H.; Feng, J.; Ya...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08B82B3/00
Inventor 朱俊杰刘山虎邢瑞敏陆峰
Owner NANJING UNIV
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