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Method for preparing Fe2O3 and Fe3O4 nano materials by taking F2<2+> salt as raw material

A nanomaterial, fe2o3 technology, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of large environmental pollution, high production cost, high reaction temperature, etc., and achieve the effect of low cost, simple equipment, and simplified reaction steps

Inactive Publication Date: 2011-01-19
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art of high reaction temperature, high preparation cost, heavy environmental pollution, complicated process and difficult to control, the present invention discloses a Fe 2+ Preparation of Fe from salt 2 o 3 , Fe 3 o 4 The method of nanomaterials is not only low in cost, simple in process, convenient in operation, but also economical and environmentally friendly. It is a new way to obtain a series of iron oxide nanomaterials

Method used

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  • Method for preparing Fe2O3 and Fe3O4 nano materials by taking F2&lt;2+&gt; salt as raw material
  • Method for preparing Fe2O3 and Fe3O4 nano materials by taking F2&lt;2+&gt; salt as raw material
  • Method for preparing Fe2O3 and Fe3O4 nano materials by taking F2&lt;2+&gt; salt as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] α-Fe 2 O 3 -Preparation of phenolic resin composite nanoparticles

[0028] Step: 1) Add 0.2mmol FeSO 4 , 0.025mmol (CH 2 ) 6 N 4 , 0.05mmol of C 6 H 5 OH and 15ml of deionized water are mixed uniformly and put into the reaction kettle; 2) Place it in a thermostat and heat it at 160℃ for 6 hours; 3) Take out the container and let it cool to room temperature; alternately wash with deionized water and absolute ethanol The product is synthesized, and the product is obtained after low-temperature drying. Figure 4 Shown is the X-ray powder diffraction pattern of the obtained sample. It can be seen from the figure that the sample is α-Fe 2 O 3 -Phenolic resin composite nanoparticles, the size of the particles is 25±5nm.

Embodiment 2

[0030] Nano α-Fe 2 O 3 And preparation of FeO(OH) particles

[0031] Step: 1) Add 0.2mmol FeSO 4 , 0.025mmol (CH 2 ) 6 N 4 , 0.05mmol of C 6 H 5 OH and 15ml of absolute ethanol are mixed uniformly and put into the reaction kettle; 2) Place it in a thermostat and heat it at a constant temperature of 160°C for 6 hours; 3) After cooling, separation and drying, the nano α-Fe can be prepared 2 O 3 And FeO(OH) particles.

Embodiment 3

[0033] Fe 3 O 4 Preparation of nanoparticles

[0034] Step: 1) Add 0.2mmol FeSO 4 , 0.025mmol (CH 2 ) 6 N 4 , 3.75ml of deionized water and 11.25ml of ethylene glycol are mixed uniformly and put into the reaction kettle; 2) Place it in a thermostat and heat it at a constant temperature of 160°C for 6 hours; 3) After cooling, separating and drying, it is prepared Fe 3 O 4 Nano particles. figure 1 Shown is a projected electron micrograph of the sample. It can be seen from the picture that the particles of the sample are relatively uniform, and the particle size is 15±5nm.

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Abstract

The invention discloses a method for preparing Fe2O3 and Fe3o4 nano materials by taking F2<2+> salt as a raw material, which is characterized by comprising the following concrete steps: (1) taking F2<2+> salt the concentration of which is 0.01-0.2mol / L as Fe precursor and pure water or water-alcohol as a solvent, adding hexamine the concentration of which is 0.01-0.2mol / L and phenol the concentration of which is 0-0.2mol / L to form a water-alcohol mixed solvent, evenly mixing the F2<2+> salt with the water-alcohol mixed solvent to form a mixture, and placing the mixture into a temperature-proof and pressure-proof container; (2) placing the container filled with the mixture of the step (1) into a thermostatic drying oven, and heating at the constant temperature of 120 DEG C-180 DEG C for 3-9 hours; and (3) taking out the container, naturally cooling to room temperature, washing the synthetic product alternately with de-ionized water and absolute ethyl alcohol, and drying at low temperature to obtain the needed product. The invention has the advantages of low cost, simple process, convenient operation, economic efficiency and environmental friendliness, and is a new way for obtainingseries of iron oxides nano materials; and the preparation process has the characteristics of controllable particle size, high purity, convenient treatment and easy industrialization.

Description

Technical field [0001] The present invention relates to a kind of Fe 2+ Salt as raw material to prepare Fe 2 O 3 , Fe 3 O 4 The nanomaterial method belongs to the field of nanomaterial technology. Background technique [0002] Fe 2 O 3 , Fe 3 O 4 Composite nanomaterials are an important class of multifunctional materials, which are widely used in various fields: as shaft seals, bearings, speakers, optical coupling devices, constant speed devices, magnetic domain condition inspection, flow control valves, thermal engines, transmission devices, fluids Pressure regulating valve, accelerometer printer, engine fixing device, grinder, fluid speed changer, magneto-optical recording medium, sound absorber, etc.; in addition, it can also be used for biomedicine, microwave absorbing material, photocatalyst separation, ink, cosmetics, etc. aspect. So far, a variety of synthetic strategies have been initially formed, such as hydrothermal method, hydrolysis method, sol method, microemulsion ...

Claims

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Application Information

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IPC IPC(8): C01G49/06C01G49/08B82B3/00
Inventor 马杰张淑平刘伟赵彦
Owner UNIV OF SHANGHAI FOR SCI & TECH
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