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Magnetic iron oxide hollow microsphere particle having mesoporous structure and making method and uses thereof

A technology of magnetic iron oxide and nano-magnetic iron oxide, which is applied in the manufacture of inductors/transformers/magnets, magnetism of inorganic materials, electrical components, etc., can solve the problems of preparation and application of mesoporous magnetic hollow particles, and is easy to popularize and apply , a wide range of effects

Inactive Publication Date: 2005-06-29
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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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 and application of mesoporous magnetic hollow particles at home and abroad.

Method used

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  • Magnetic iron oxide hollow microsphere particle having mesoporous structure and making method and uses thereof
  • Magnetic iron oxide hollow microsphere particle having mesoporous structure and making method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Take 80-100 ml of homemade (or commercially available) polystyrene particle (240 nm) emulsion, add 2.0 liters of double distilled water and 100-800 ml of ethylene glycol, and stir evenly. Slowly raise the temperature to 80-100°C under stirring; slowly add 10-100mmol of hexamethylenetetramine and 50-120mmol of ferric dichloride into the system for continuous reaction. Continue to react for 30 minutes after the injection. Then centrifuge and precipitate at a speed of 1000-4000 rpm; after removing the supernatant, add 2.0 liters of double-distilled water for washing, and centrifuge again, repeating this three times. Finally, it is baked at 70°C for 24 hours, and the organic microsphere composite submicron particles with a core size of 240 nanometers and magnetic iron oxide particles are obtained. Composite particles composed of iron oxide particles and a mesopore size of 3 to 7 nanometers.

Embodiment 2

[0047] Take 80-100 ml of self-made (or commercially available) polystyrene particle (320-380 nm) emulsion, add 2800 ml of double-distilled water and 150-850 ml of ethylene glycol, and stir evenly. Slowly heat up to 80°C under stirring; 10-100mmol of hexamethylenetetramine and 50-90mmol of ferric chloride solution are slowly added to the system for continuous reaction. Continue to react for 30 to 90 minutes after the injection. Then centrifuge and precipitate at a speed of 1000-2000 rpm; after removing the supernatant, add 3000 ml of double distilled water to wash, and centrifuge again, repeating this three times. Finally, bake at 70°C for 24 hours to obtain organic microsphere composite submicron particles with a core size of 320-380 nanometers, a magnetic iron oxide particle coating of 380-480 nanometers, and a shell layer with a particle size of 30-80 nanometers. Composed of magnetic iron oxide particles, composite particles with a mesopore size of 3 to 7 nanometers.

Embodiment 3

[0049] Take 80-100 ml of homemade (or commercially available) polystyrene particle (300 nanometer) emulsion, add 3.0 liters of double distilled water and 150-850 ml of ethylene glycol, and stir evenly. Slowly raise the temperature to 70-95°C under stirring; slowly add 10-100mmol hexamethylenetetramine and 60-120mmol ferric chloride into the system for continuous reaction. After the injection, put 10-50mmol of hexamethylenetetramine and 30-50mmol of ferric dichloride into the injection tube respectively, inject at a speed of 0.1-0.5ml / min, and continue to react for 30-40 minutes after injection . Then centrifuge and precipitate at a speed of 1000-3000 rpm; remove the supernatant, add 3.0 liters of double distilled water for washing, and centrifuge again. Finally, it is baked at 70°C for 24 hours, and the organic microsphere composite submicron particles with a core size of 300 nm and magnetic iron oxide particles are obtained. The particle size is 400-460 nm. Composite partic...

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Abstract

This invention belongs to a compound particle inorganic hollow micro particle process technique field. This invention uses the method of two iron salt liquid control hydrolyze to process the hole magnetic ferric oxide to cover on the organic ball of polystyrene to get the nucleus or shell structure magnetic ferric oxide compound ball. It uses slow heating method and non-oxygen conditions to sinter the compound particles and the organic material in the particles to get the whole hole magnetic ferric oxygen hollow micro ball particles.

Description

technical field [0001] The invention belongs to the technical field of preparing inorganic hollow microsphere particles with composite particles, in particular to magnetic iron oxide hollow particles with mesoporous structure, and mesoporous magnetic iron oxide-organic composite particles with core / shell structure to prepare mesoporous structure Methods and uses of magnetic iron oxide hollow microsphere particles. Background technique [0002] Inorganic porous materials are widely used in catalysts and adsorption carriers because of their large specific surface area and adsorption capacity. The International Union of Pure and Applied Chemistry defines inorganic solid materials with a pore size of 1 to 10 nm as mesoporous materials. Due to their unique magnetic properties, magnetic nanomaterials were first used in the biological field, such as biochemical drugs for separating genes and magnetically guided therapeutic drugs; now they are also widely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/11H01F41/00
Inventor 唐芳琼黄忠兵
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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