Preparation method for nano ferroferric oxide

A ferric tetroxide and nanotechnology, applied in the direction of iron oxide/ferric hydroxide, nanotechnology, ferrous oxide, etc., can solve the problems of wide particle size range and large particle size of ferric tetroxide, and achieve Narrow particle size range and uniform particle size effect

Inactive Publication Date: 2012-07-11
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the ferric oxide particle size that this method makes is bigger, and particle size range is wider

Method used

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  • Preparation method for nano ferroferric oxide
  • Preparation method for nano ferroferric oxide
  • Preparation method for nano ferroferric oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) 0.4705g (0.0012mol) FeSO 4 ·(NH 4 ) 2 SO 4 ·6H 2 O and 0.5406g (0.0020mol) FeCl 3 ·6H 2 O was dissolved in 100ml of distilled water to obtain liquid A; 2.0g of hydrazine hydrate was dissolved in 50ml of distilled water to obtain liquid B. Put liquid A in a flask, under the protection of argon, and stir at a temperature of 2°C, use a dropping funnel to add liquid B dropwise into liquid A, after 0.5 hours, continue to stir and react at a temperature of 2°C for 1 hour, After the reaction was completed, the reaction suspension was added to the centrifuge tube, and after centrifugation at 6000 rpm for 5 minutes, the upper liquid was removed to obtain a solid, and the solid was washed with distilled water until the pH of the supernatant in the centrifuge tube was 7, and the solid was separated. And dry the solid to give FeO(OH).

[0024] Structure Identification

[0025] It was confirmed by XRD detection that the solid obtained by the above method is indeed FeO(OH)...

Embodiment 2

[0030] 1) Add 0.2780g (0.0010mol) FeSO 4 ·7H 2 O and 0.3244g (0.0020mol) FeCl 3 Dissolve in 100ml of distilled water to obtain liquid A; dissolve 6.7g of hydrazine hydrochloride in 50ml of distilled water to obtain liquid B. Put liquid A in a flask, under the protection of argon, and stir at a temperature of 25°C, use a dropping funnel to add liquid B dropwise into liquid A, drop it in 2 hours, continue to stir and react at a temperature of 25°C for 5 hours, After the reaction was completed, the reaction suspension was added to the centrifuge tube, and after centrifugation at 6000 rpm for 5 minutes, the upper liquid was removed to obtain a solid, and the solid was washed with distilled water until the pH of the supernatant in the centrifuge tube was 7, and the solid was separated. And dry the solid to give FeO(OH).

[0031] 2) Add 0.1g FeO(OH) obtained in step 1) into the hydrothermal kettle, add 20ml of 0.5% (weight) NaOH aqueous solution, react at 100°C for 10 hours, cool...

Embodiment 3

[0033] 1) Add 0.2780g (0.0010mol) FeSO 4 ·7H 2 O and 0.4040g (0.0010mol) Fe(NO 3 ) 3 9H 2 O was dissolved in 100ml of distilled water to obtain liquid A; 6.7g of hydrazine hydrochloride was dissolved in 50ml of distilled water to obtain liquid B. Put liquid A in a flask, under the protection of nitrogen, and stir at a temperature of 15°C, use a dropping funnel to add liquid B dropwise into liquid A, after 1.5 hours, continue to stir and react at a temperature of 15°C for 3 hours. After completion, the reaction suspension was added to the centrifuge tube, and after centrifugation at 6000 rpm for 5 minutes, the upper liquid was removed to obtain a solid, and the solid was washed with distilled water until the pH of the supernatant in the centrifuge tube was 7, and the solid was separated and The solid was dried to give FeO(OH).

[0034]2) Add 0.1g FeO(OH) obtained in step 1) into the hydrothermal kettle, add 20ml of 0.8% (weight) KOH aqueous solution, react at 150°C for 18 ...

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Abstract

The invention discloses a preparation method for nano ferroferric oxide. The preparation method includes the following steps that: (1) water-soluble Fe<2+> salt and water-soluble Fe<3+> salt are dissolved in distilled water according to a proportion, so that solution A is obtained, and the molar ratio of the water-soluble Fe<2+> salt to the water-soluble Fe<3+> salt is 1:(0.8 to 2); hydrazine compound is mixed with distilled water, so that solution B is obtained; and under the protection of inert gas, and with stirring at the temperature of 2 DEG C to 25 DEG C, the solution B is dripped into the solution A, and solid is separated out after reaction is finished, and is washed and dried, so that FeO(OH) is obtained; and (2) the obtained FeO(OH) is put into a reaction kettle and added with alkali liquid to react under the temperature of 100 DEG C to 200 DEG C for 10 to 24 hours, the temperature is cooled to the room temperature after reaction is finished, so that solid is separated out, and the solid is washed and dried, so that nano ferroferric oxide particles are obtained. The preparation method is mainly used for preparing the nano ferroferric oxide.

Description

technical field [0001] The invention relates to a method for preparing nanometer ferric oxide, which belongs to the technical field of nanometer material preparation. Background technique [0002] With the development of nanotechnology, the study of magnetic nanoparticles has received great attention. The superparamagnetism, surface effect, small size effect and other properties of nano ferroferric oxide make it special in magnetic recording materials, magnetic liquid materials, special catalyst raw materials, microwave absorbing materials, magnetic polymer microspheres, etc. It also has a good application prospect in the field of biotechnology and medicine. [0003] The preparation methods of nano-ferric oxide particles mainly include physical methods and chemical methods. Nanoparticles prepared by physical methods generally have low purity and uneven particle distribution. In the chemical method, the iron ferric oxide nanoparticles obtained by the precipitation method a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08B82Y40/00
Inventor 石强吕英迪邱少君郑晓东唐望
Owner XIAN MODERN CHEM RES INST
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