Preparation method of Fe3O4@SiO2@ZnO:La magnetic microspheres and application thereof

A magnetic microsphere, fe3o4 technology, applied in the field of materials, can solve problems such as secondary pollution, and achieve the effect of promoting loading, improving chemical stability, and avoiding agglomeration

Pending Publication Date: 2019-12-24
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

Therefore, it is urgent to control the water environment. However, the current treatment basically adopts traditional technology for treatment, which will cause secondary pollution to a cer

Method used

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  • Preparation method of Fe3O4@SiO2@ZnO:La magnetic microspheres and application thereof
  • Preparation method of Fe3O4@SiO2@ZnO:La magnetic microspheres and application thereof
  • Preparation method of Fe3O4@SiO2@ZnO:La magnetic microspheres and application thereof

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] 1 Reagents and instruments

[0033] Ferric chloride hexahydrate (Tianjin Kemiou Chemical Reagent Co., Ltd.), cyclohexane, ethylene glycol (Guangzhou Jinhuada Chemical Reagent Co., Ltd.), polyethylene glycol 4000, 25% ammonia water, acetic acid trihydrate Sodium, zinc chloride, absolute ethanol, hexamethylenetetramine (Xilong Chemical Co., Ltd., Shantou, Guangdong), polyoxyethylene (5) nonylphenyl ether, branched IgepalCO-520, tetrasilicate Ethyl ester (Aladdin Reagent Co., Ltd.). All the above reagents are analytically pure, and all the water used in the experiment is deionized water.

[0034] Hitachi S-4800 field emission scanning electron microscope (Hitachi, Japan), JEM-2100 field emission transmission electron microscope (JEOL, Japan), MPMS-VSM and MPMS-XL vibrating sample magnetometer (Quantum Design, USA), SLX-1008 program contro...

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Abstract

The invention discloses a preparation method of Fe3O4@SiO2@ZnO:La magnetic microspheres and an application thereof. The preparation method of the magnetic microspheres comprises the following steps: (1) preparation of Fe3O4: synthesizing Fe3O4 microspheres through a solvothermal method; (2) preparation of Fe3O4@SiO2: preparing monodisperse Fe3O4@SiO2 microspheres by adopting a reversed-phase microemulsion method; (3) preparation of the Fe3O4@SiO2@ZnO:La: dispersing Fe3O4@SiO2 microspheres in a mixed solution of zinc chloride and lanthanum nitrate with a certain lanthanum-zinc molar ratio, collecting a sample through an external magnet, then dispersing the collected sample in a hexamethylenetetramine solution, carrying out stirring reaction, washing the sample, carrying out vacuum drying, and then collecting the product. The magnetic microsphere prepared by the invention has excellent photocatalytic performance, can be repeatedly used, and can reduce secondary pollution generated by materials after wastewater treatment.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to Fe 3 o 4 @SiO 2 Preparation method and application of @ZnO:La magnetic microspheres. Background technique [0002] In recent years, semiconductor light-emitting quantum dots have attracted more and more attention due to their unique photoelectric properties, and have extremely broad application prospects in optoelectronic devices, bioluminescence labeling and imaging, medical diagnosis, sensors, photocatalysis, and functional anti-counterfeiting. Among them, zinc oxide quantum dots are non-toxic, harmless, environmentally friendly, and low in manufacturing cost, and have become a hot spot in the research field of optoelectronic materials and devices. At present, there has been related technical research on doping zinc oxide quantum dots with rare earth lanthanum ions. However, the inventors have found that although ZnO can be doped with La to enhance its photocatalytic perfo...

Claims

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Application Information

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IPC IPC(8): B01J23/83C02F1/30H01F1/44C02F101/30
CPCB01J23/83B01J23/002B01J35/0033B01J35/004C02F1/30H01F1/445B01J2523/00C02F2101/308C02F2305/10B01J2523/27B01J2523/41B01J2523/842
Inventor 黄文艺吕晓威谭嘉麟黄秋梅邓丽娟李利军程昊冯军孔红星李彦青
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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