Preparation method of Ag/ZnFe2O4/Fe3O4 heterogeneous magnetic microspheres with controllable morphology

A technology of magnetic microspheres and znfe2o4, which is applied in the field of photocatalytic materials, can solve the problems of incomplete and effective treatment of dye wastewater, and achieve the effect of good dispersion and stable and uniform powder

Active Publication Date: 2020-01-10
HEFEI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] As traditional physical-chemical methods can no longer be completely effective in treating dye wastewater, people have found that photocatalytic oxidation can oxidize and reduce dye wastewater into harmless substances.

Method used

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  • Preparation method of Ag/ZnFe2O4/Fe3O4 heterogeneous magnetic microspheres with controllable morphology
  • Preparation method of Ag/ZnFe2O4/Fe3O4 heterogeneous magnetic microspheres with controllable morphology
  • Preparation method of Ag/ZnFe2O4/Fe3O4 heterogeneous magnetic microspheres with controllable morphology

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preparation example Construction

[0023] A shape-controllable Ag / ZnFe 2 o 4 / Fe 3 o 4 The preparation method of heterogeneous magnetic microspheres comprises the following steps:

[0024] (1) Using crystalline ferric chloride, crystalline ferric nitrate, and crystalline zinc acetate as raw materials, glycine or L-aspartic acid as a complexing agent, and ethylene glycol as a solvent, the raw materials and complexing agent are dissolved in a solvent to form Mix the solution, then place the mixed solution on a magnetic stirrer to stir, add the stirred solution into the hydrothermal reaction kettle, and then use 5ml of ethylene glycol to rinse the beaker and pour it into the reaction kettle;

[0025] (2) Put the reaction kettle in step (1) into a constant temperature blast oven, cool the reaction kettle after the reaction is over, centrifuge the powder generated in the reaction kettle with a centrifuge, and then use absolute ethanol and deionized Alternately washed with water several times, and then put the wa...

Embodiment 2

[0041] A shape-controllable Ag / ZnFe 2 o 4 / Fe 3 o 4 The preparation method of heterogeneous magnetic microspheres comprises the following steps:

[0042] (1) Weigh 0.900g ferric chloride hexahydrate, 2.0g crystalline sodium acetate and 0.678g zinc acetate dihydrate, so that the mass ratio of iron source and zinc source is 1:1, pour them into a beaker, add 0.5 g L-aspartic acid and 15mL ethylene glycol, mix it into a solution, and put it on a magnetic stirrer to stir for 30min. In the kettle, rinse the beaker with 5mL of ethylene glycol and pour it into the reaction kettle;

[0043] (2) Cover the reaction kettle and put it in a constant temperature blast oven, set the temperature to 200°C, and react for 10 hours; after the reaction is completed, the reaction kettle is cooled and after that, take out the reaction kettle, and centrifuge the powder generated after the reaction with a centrifuge, And wash alternately several times with absolute ethanol and deionized water resp...

Embodiment 3

[0047] A shape-controllable Ag / ZnFe 2 o 4 / Fe 3 o 4 The preparation method of heterogeneous magnetic microspheres comprises the following steps:

[0048] (1) Weigh 2.107g crystalline ferric nitrate, 2.0g crystalline sodium acetate and 0.280g zinc acetate dihydrate, so that the mass ratio of iron source and zinc source is 4:1, pour them into a beaker, add 0.25g Mix L-aspartic acid and 15mL ethylene glycol to form a homogeneous solution, and put it on a magnetic stirrer to stir for 30min. When stirring, the solution is reddish brown. In the kettle, rinse the beaker with 5mL of ethylene glycol and pour it into the reaction kettle;

[0049] (2) Cover the reaction kettle and put it in a constant temperature blast oven, set the temperature to 200°C, and react for 10 hours; after the reaction is completed, the reaction kettle is cooled and after that, take out the reaction kettle, and centrifuge the powder generated after the reaction with a centrifuge, And wash alternately seve...

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Abstract

The invention discloses a preparation method of Ag / ZnFe2O4 / Fe3O4 heterogeneous magnetic microsphere with controllable morphology. The preparation method includes the steps of: (1) taking crystalline ferric chloride or crystalline ferric nitrate and crystalline zinc acetate as the raw materials, adopting glycine or L-aspartic acid as the complexing agent and taking ethylene glycol as the solvent, mixing the substances, then putting the mixture on a magnetic stirrer, adding the stirred solution into a hydrothermal reaction kettle, then flushing a beaker with ethylene glycol, and conducting pouring into the reaction kettle; (2) putting the reaction kettle into a constant-temperature blast oven, centrifuging the powder generated in the reaction kettle by a centrifugal machine at the end of thereaction, then respectively using anhydrous ethanol and deionized water for alternate washing repeatedly, and then putting the washed powder into a vacuum drying oven for drying; and (3) pouring silver nitrate, glucose and ZnFe2O4 / Fe3O4 composite powder into the beaker, adding deionized water for dissolving, stirring the substances uniformly, then putting the beaker on an ultrasonic cleaner for cleaning, then utilizing deionized water and anhydrous ethanol for mixed centrifugal washing, and then performing drying, thus obtaining Ag / ZnFe2O4 / Fe3O4 multi-component nano-powder.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a shape-controllable Ag / ZnFe 2 o 4 / Fe 3 o 4 Preparation method of heterogeneous magnetic microspheres. Background technique [0002] As traditional physical-chemical methods can no longer completely and effectively treat dye wastewater, it has been found through research that photocatalytic oxidation can oxidize and reduce dye wastewater into harmless substances. Therefore, photocatalytic treatment of dye wastewater has attracted people's attention. Magnetic Nano Ag / ZnFe 2 o 4 / Fe 3 o 4 The multi-component powder is small in size and large in specific surface area, and it can be used as a catalyst carrier to increase the contact area of ​​the catalytic reaction and make the catalytic performance more significant. Contents of the invention [0003] The purpose of the present invention is to provide a shape controllable Ag / ZnFe 2 o 4 / Fe 3 o 4 A pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J35/08B01J35/10
CPCB01J23/8953B01J35/004B01J35/0033B01J35/0013B01J35/08B01J35/1014
Inventor 谢劲松盛新宇黄强汤俊宇王淑芬赵娣芳
Owner HEFEI UNIV
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