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Preparation method of spherical ferroferric oxide

A technology of spherical ferric oxide, which is applied in the field of preparation of spherical ferric ferric oxide by solvothermal method, can solve problems such as insufficient synthesis methods, and achieve the effect of uniform shape, simple process and controllable size

Active Publication Date: 2012-03-21
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on the preparation of ferroferric oxide has made great progress, there are deficiencies in various synthetic methods.

Method used

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  • Preparation method of spherical ferroferric oxide
  • Preparation method of spherical ferroferric oxide
  • Preparation method of spherical ferroferric oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0022] According to the preparation process, under normal temperature and pressure, 3×10 -3 mol FeCl 3 ·6H 2 O was added to 25 mL of ethylene glycol, and ferric chloride hexahydrate was completely dissolved by magnetic stirring to obtain a clear solution. will be 1.5×10 -3 mol of ammonium acetate was added to the above clear solution, and under the action of magnetic stirring, it was thoroughly mixed to obtain a brown clear solution. The brown clear solution was sealed and placed in a polytetrafluoroethylene-lined stainless steel reaction kettle with a volume of 30 mL, and the reaction kettle was placed in an oven, and the temperature was raised to 200 °C at a heating rate of 5 °C / min. The temperature was reacted for 24 h. After the reaction, the obtained mixture was separated by a centrifuge at a rate of 10000 r / min for 1 min, and the obtained black solid was washed with absolute ethanol for more than 5 times, and the obtained solid was dried in an oven at 80 °C. The d...

Embodiment 2

[0024] According to the preparation process, under normal temperature and pressure, 3×10 -3 mol FeCl 3 ·6H 2 O was added to 25 mL of ethylene glycol, and ferric chloride hexahydrate was completely dissolved by magnetic stirring to obtain a clear solution. will be 1.5×10 -3 mol of ammonium acetate was added to the above clear solution, and under the action of magnetic stirring, it was thoroughly mixed to obtain a brown clear solution. The brown clear solution was sealed and placed in a polytetrafluoroethylene-lined stainless steel reactor with a volume of 30 mL, and the reactor was placed in an oven, and the temperature was raised to 195 °C at a heating rate of 5 °C / min. The temperature was reacted for 24 h. After the reaction, the obtained mixture was separated by a centrifuge at a rate of 10000 r / min for 1 min, and the obtained black solid was washed with absolute ethanol for more than 5 times, and the obtained solid was dried in an oven at 80 °C. The drying time is 8 ...

Embodiment 3

[0026] According to the preparation process, 1×10 -3 mol FeCl 3 ·6H 2 O was added to 25 mL of ethylene glycol, and ferric chloride hexahydrate was completely dissolved by magnetic stirring to obtain a clear solution. will be 1.5×10 -3 mol of ammonium acetate was added to the above clear solution, and under the action of magnetic stirring, it was thoroughly mixed to obtain a brown clear solution. The brown clear solution was sealed and placed in a polytetrafluoroethylene-lined stainless steel reaction kettle with a volume of 30 mL, and the reaction kettle was placed in an oven, and the temperature was raised to 190 °C at a heating rate of 5 °C / min. The temperature was reacted for 12 h. After the reaction was completed, the obtained mixture was separated by a centrifuge at a rate of 10000 r / min for 1 min, and the obtained black solid was washed with absolute ethanol for more than 5 times, and the obtained solid was dried in an oven at 80 °C. The drying time is 8 hours, an...

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Abstract

The invention discloses a preparation method of spherical ferroferric oxide, relating to the preparation field of nano materials. The preparation method comprises the following steps of: completely dissolving ferrum chloride hexahydrate as a ferrum source and glycol as a solvent at normal temperature and normal pressure to obtain a clear solution; then, adding ammonium acetate into the prepared clear solution, and mixing to obtain a brown clear solution; then sealing and placing in a reaction kettle, and heating and reacting for 12-24h; after the reaction is ended, centrifugally separating a mixture obtained through the reaction to obtain a black solid, i.e., the ammonium acetate. Raw materials used in the preparation method provided by the invention are easy to obtain, the process is simple, the size of a spherical grain is easy to control, and the spherical ferroferric oxide with uniform shape and controllable size can be synthesized.

Description

Technical field: [0001] The invention relates to the field of nanomaterial preparation, in particular to a preparation method for synthesizing spherical ferric ferric oxide by a solvothermal method. Background technique: [0002] Ferric oxide (Fe 3 o 4 ) is an important spinel-type ferrite, and it is a new type of high-function inorganic material facing the 21st century. Therefore, it has a very broad application prospect in the fields of national defense, environmental engineering, surface engineering, chemical industry, electronics and semiconductor materials. [0003] In the past few decades, various methods for the preparation of Fe3O4 have attracted much attention, and so far, a variety of synthetic methods have been developed, such as chemical co-precipitation, oil / water emulsion, thermal decomposition, solvent Thermal synthesis method, sonochemical method, jet decomposition method, arc discharge method, combustion synthesis method, etc. Although great progress has...

Claims

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Application Information

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IPC IPC(8): C01G49/06B82Y40/00
Inventor 陶菲菲王林霞沈永淼张涛
Owner SHAOXING UNIVERSITY
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