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Preparation method of iron oxide nanosheet

A technology of iron oxide nanometer and hydrogen peroxide, applied in iron oxide, iron oxide/iron hydroxide, nanotechnology, etc., can solve the problem of single structure of iron oxide

Inactive Publication Date: 2016-11-09
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing iron oxide nanosheets in order to overcome the shortcomings of the single structure of iron oxide in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] FeCl 2 Dissolve it in water, configure it as a solution with a concentration of 2mol / L, place 500mL of this solution in a water bath with a constant temperature of 80°C, and add 4mL of 30% (mass fraction) hydrogen peroxide and a certain amount of NaOH dilute solution dropwise at the same time to keep the pH value at 13 , reacted for 3 hours, transferred to an autoclave, raised the temperature to 180°C within 1 hour, continued to react for 8 hours, and naturally cooled to room temperature. During this process, a precipitate with a layered structure was formed. The obtained solid was added to a sodium lactate solution with a concentration of 4 mol / L, the solid-to-liquid ratio was 1:10, stirred for 5 hours, precipitated and separated, and the obtained solid was washed with deionized water three times, then calcined at a temperature of 450°C. That is, an iron oxide nanosheet is obtained.

[0013] Take 1g of iron oxide nanosheets, add them to 1.0L of methylene blue wastewat...

Embodiment 2

[0015] FeCl 2 Dissolve it in water, configure it as a solution with a concentration of 3mol / L, place 500mL of this solution in a water bath with a constant temperature of 70°C, and add 2mL of 30% (mass fraction) hydrogen peroxide and a certain amount of NaOH dilute solution dropwise at the same time to keep the pH value at 12 , reacted for 2 hours, transferred to an autoclave, raised the temperature to 150°C within 1 hour, continued to react for 4 hours, and naturally cooled to room temperature. During this process, a precipitate with a layered structure was formed, separated from the precipitate, and washed twice with deionized water; 2) Add the precipitated solid to a sodium lactate solution with a concentration of 2 mol / L, the solid-to-liquid ratio is 1:10, stir for 4 hours, and precipitate and separate. After the obtained solid is washed twice with deionized water, the calcining to obtain an iron oxide nanosheet.

[0016] Take 1g of iron oxide nanosheets, add them to 1.0L...

Embodiment 3

[0018] FeCl 2 Dissolve it in water, configure it as a solution with a concentration of 2.5mol / L, place 500mL of this solution in a water bath with a constant temperature of 80°C, and add 30% (mass fraction) hydrogen peroxide 3mL and a certain amount of NaOH dilute solution dropwise at the same time to keep the pH value 13. React for 3 hours, transfer to an autoclave, heat up to 180°C within 1 hour, continue to react for 8 hours, and cool down to room temperature naturally. During this process, a precipitate with a layered structure is formed, the precipitate is separated, and washed 3 times with deionized water; The precipitated solid was added to a sodium lactate solution with a concentration of 4 mol / L, the solid-to-liquid ratio was 1:20, stirred for 5 hours, precipitated and separated, and the obtained solid was washed with deionized water for 3 times, then calcined at a temperature of 450°C , that is, an iron oxide nanosheet is obtained.

[0019] Take 1g of iron oxide nan...

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Abstract

The invention discloses a preparation method of an iron oxide nanosheet. The method sequentially comprises the steps of: placing 500mL of a FeCl2 solution in waterbath at a constant temperature of 70-80DEG C, adding 2-4mL of 30% (mass fraction) hydrogen peroxide and a certain amount of a NaOH dilute solution dropwise into the solution at the same time, maintaining a pH value of 12-13, carrying out reaction for 2-3h, then transferring the product into an autoclave, performing heating to 150-180DEG C within 1h, further carrying out reaction for 4-8h, and conducting natural cooling to room temperature to form precipitate with a stratified structure, carrying out precipitation separation, and performing washing with deionized water 2-3 times; adding the solid obtained by precipitation into a sodium lactate solution with a concentration of 2-4mol / L in a solid-liquid ratio of 1:10-1:50, then performing stirring for 4-5h, and conducting precipitation separation, washing the obtained solid with deionized water 2-3 times, then performing calcination at 400-450DEG C to remove lactate therein, thus obtaining the iron oxide nanosheet. The structure is conducive to adsorbing and catalyzing pollutants.

Description

technical field [0001] The invention relates to the development of new materials for environmental pollution control, in particular to a preparation method of iron oxide nanosheets. Background technique [0002] Organic waste gas treatment refers to the treatment work of adsorption, filtration and purification of organic waste gas generated in the process of industrial production. Usually organic waste gas treatment includes formaldehyde organic waste gas treatment, benzene, toluene, xylene and other benzene series organic waste gas treatment, etc. Organic waste gas is generally flammable and explosive, toxic and harmful, insoluble in water, soluble in organic solvents, and difficult to treat. In the treatment of organic waste gas, various principles such as organic waste gas activated carbon adsorption treatment method, catalytic combustion method, catalytic oxidation method, acid-base neutralization method, and plasma method are commonly used. Catalytic oxidation is a mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G49/06C01P2004/64
Inventor 黄文艳赵文昌
Owner CHANGZHOU UNIV
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