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A kind of preparation method of one-step synthetic porous iron oxide microsphere

A technology of porous iron and microspheres, which is applied in the preparation of microspheres, microcapsule preparations, chemical instruments and methods, etc., can solve the problems of complex ferrite microsphere method, high cost, high energy consumption, etc. Large surface area, simple and safe process

Active Publication Date: 2017-06-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex ferrite microspheres prepared by the existing process, large energy consumption and high cost, and provide a preparation method for one-step synthesis of porous ferrite microspheres

Method used

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  • A kind of preparation method of one-step synthetic porous iron oxide microsphere
  • A kind of preparation method of one-step synthetic porous iron oxide microsphere
  • A kind of preparation method of one-step synthetic porous iron oxide microsphere

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specific Embodiment approach 1

[0018] Specific embodiment 1: This embodiment is a preparation method for one-step synthesis of porous ferrite microspheres, which is completed in the following steps:

[0019] Inject the sodium carbonate aqueous solution with a concentration of 1mol / L~1.5mol / L into the ferric chloride anhydrous ethanol solution with a concentration of 0.006mol / L~0.009mol / L, then let it stand at room temperature for 20min~40min, and then Centrifuge at a centrifugation speed of 3000r / min to 5000r / min for 5min to 15min, remove the supernatant, and obtain the precipitated substance; first wash the precipitated substance with absolute ethanol for 3 to 5 times, and then use distilled water to wash the precipitated substance for 3 times to 5 times, and then dried at a temperature of 50°C to 70°C for 9h to 15h to obtain porous ferrite microspheres;

[0020] The volume ratio of the sodium carbonate aqueous solution with a concentration of 1mol / L to 1.5mol / L to the ferric chloride absolute ethanol solu...

specific Embodiment approach 2

[0028] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the concentration is that the sodium carbonate aqueous solution of 1.35mol / L is injected into the ferric chloride dehydrated alcohol solution that concentration is 0.0075mol / L, then at room temperature Let it stand for 30 minutes, then centrifuge at a centrifugal speed of 3500r / min for 10 minutes, remove the supernatant, and obtain the precipitated substance; first use absolute ethanol to wash the precipitated substance 3 times, then use distilled water to wash the precipitated substance 3 times, and then at temperature Dry at 60°C for 12 hours to obtain porous ferrite microspheres. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: one of the differences between this embodiment and specific embodiment one or two is that concentration is that the sodium carbonate aqueous solution of 1.2mol / L is injected into the ferric chloride dehydrated alcohol solution that concentration is 0.0085mol / L, and then Stand at room temperature for 30 minutes, then centrifuge at a centrifugal speed of 3500r / min for 10 minutes, remove the supernatant, and obtain the precipitated substance; first use absolute ethanol to wash the precipitated substance 3 times, and then use distilled water to wash the precipitated substance 3 times, Drying was carried out at a temperature of 60° C. for 12 hours to obtain porous ferrite microspheres. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method for one-step synthesis of porous iron oxide microspheres, which relates to a preparation method of iron microspheres. The purpose of the present invention is to solve the problems of complex methods, large energy consumption and high cost of the ferrite microspheres prepared by the prior art. Method: Add sodium carbonate aqueous solution to ferric chloride anhydrous ethanol solution, then let it stand at room temperature, then centrifuge, remove the supernatant, and obtain the precipitated substance; use distilled water to wash the precipitated substance, and then dry it at a high temperature. Porous ferrite microspheres are obtained. The size of the porous ferrite microspheres prepared by the present invention is 5 μm to 10 μm, the pore diameter is 1 μm to 3 μm, and it is magnetic. When it is used as an adsorbent to adsorb Congo red, the adsorption capacity is 70 mg / g to 130 mg / g, and it can also be used as a photocatalyst to treat water bodies Toxic organic pollutants. The invention can obtain a preparation method for synthesizing porous iron oxide microspheres in one step.

Description

technical field [0001] The invention relates to a preparation method of iron microspheres. Background technique [0002] The components of microsphere materials include inorganic substances and organic substances, and their shapes are different, and their sizes are mainly concentrated between tens of nanometers and hundreds of microns. According to its unique characteristics of size, shape and different components, it can be used as a carrier for catalysts such as microreactors, adsorbents, separation agents, drugs and biological enzymes, electrode materials, dyes, microwave adsorption materials, heat insulation materials, etc. Acoustic and other materials can be used in medicine, aerospace, construction, industry, agriculture and other fields. Synthesis methods are mainly divided into template method, self-assembly method and so on. In recent years, research in the field of microspheres has mainly focused on morphology, size control, and applications. Surface morphology ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02B01J20/06B01J20/28B01J20/30B01J23/745B01J35/08B01J35/10C02F1/28C02F1/30
Inventor 韩晓军赵肖乐
Owner HARBIN INST OF TECH