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Preparation method of nano ferric oxide

A technology of nanometer iron oxide and iron trichloride, which is applied in the direction of iron oxide, iron oxide/iron hydroxide, etc., to achieve the effects of controllable product particle size, high yield, and simple preparation process

Inactive Publication Date: 2005-09-21
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of nano-iron oxide by irradiation method, especially the electron beam radiation method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment one: with 2.73gFeCl 3 ·6H 2 O was dissolved in 50 ml of deionized water, titrated with ammonia water (containing 25%-28% ammonia), and the pH value of the solution was adjusted to 6.54. Add 5.2 ml of polyvinyl alcohol (PVA), and 30.5 ml of isopropanol (IPA). The prepared solution was irradiated with an electron beam at a dose of 300Kgy, and the irradiated product was separated by magnetic separation, washed with deionized water, and dried in vacuum at 60°C for 12 hours. Grinding the dried product into powder to obtain nanometer iron oxide powder.

[0013] The nano-iron oxide prepared in this example is a black powder, and the yield is 85%.

[0014] The sample of the obtained nano-iron oxide is referred to as sample A.

Embodiment 2

[0015] Embodiment two: with 2.73gFeCl 3 ·6H 2 O was dissolved in 50ml of deionized water, titrated with ammonia water (containing 25%-28% ammonia), and the pH value of the solution was adjusted to 5.51. Add 5.2 ml of polyvinyl alcohol (PVA), and 30.5 ml of isopropanol (IPA). After the prepared solution was irradiated with electron beam at a dose of 200Kgy, the irradiated product was separated by magnetic separation method, then washed several times with deionized water, and dried in vacuum at 60°C for 12 hours. Grinding the dried product into powder to obtain nanometer iron oxide powder.

[0016] The nano-iron oxide prepared in this example is a black powder with a yield of 55%.

[0017] The sample of the obtained nano-iron oxide is referred to as sample B.

[0018] Sample A and sample B were analyzed by X-ray diffraction analysis, transmission electron microscope and infrared spectroscopic analysis. The obtained results prove that the prepared samples are all nanometer i...

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Abstract

The invention relates to a method for producing nanoironoxide, especially method for producing nanoironoxide using electron irradiation, which comprises the following steps: dissolving FeCl3.6H2O into deionized water, titrating by ammonial solution with 25%-28% ammonia. Adding polyvinyl alcohol (PVA) as a surfactant to control the diameter of particles, adding alcohol isopropylicum as a free radical scavenging agent. Irradiating the different PH solution with different arrangement by dissimilar dosage electron beam, separating the production using magnetic separation process, then washing several times by deionized water, vacuum drying 12 h on in the temperature of 60 DEG C, grinding the production to powder to get the nanoironoxide.

Description

technical field [0001] The invention relates to a method for preparing nanometer iron oxide, in particular to a method for preparing nanometer iron oxide by electron beam radiation. Background technique [0002] Nano iron oxide has good light resistance, heat resistance, alkali resistance, dilute acid resistance, corrosive gas resistance and good magnetic properties. It is widely used as a colorant for rubber, ink, artificial marble, ground terrazzo, colorant and filler for plastics, asbestos, artificial leather, polishing agent slurry, etc., as a polishing agent for precision instruments and optical glass, and is a good choice for the manufacture of magnetic materials ferrite. It is an important raw material, and it is also used in industries such as ceramics, papermaking, ink and art pigments. [0003] There are many ways to prepare nano iron oxide, such as hydrothermal method, forced hydrolysis method, sol-gel method, solid phase method, microwave method, microemulsion m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06
Inventor 李珍焦正吴明红钟海舰吕森林
Owner SHANGHAI UNIV
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