Fluorine modified Fe3O4 magnetic nano material and preparation method and applications thereof

A magnetic nanometer and fluorine modification technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve problems that are difficult to meet practical applications, difficult to adsorb and degrade, and long reaction time. Achieve the effects of easy magnetic separation and recovery, easy operation and control, and fast reaction rate

Active Publication Date: 2018-08-17
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But single Fe 3 o 4 Particle-activated H 2 o 2 capabilities are very limited (such as H 2 o 2 Large dosage, long reaction time, high temperature, etc.), it is difficult to meet the practical application
A large number of literatures have reported the use of transition metal ions (such as Mn 2+ 、Co 2+ 、Cu 2+ 、Ti 4+ etc.) Doping can increase Fe 3 o 4 Catalytic activity of nanoparticles, but metal ion doped Fe 3 o 4 Generally difficult to adsorb and degrade anionic pollutants under neutral conditions due to low isoelectric point

Method used

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  • Fluorine modified Fe3O4 magnetic nano material and preparation method and applications thereof
  • Fluorine modified Fe3O4 magnetic nano material and preparation method and applications thereof
  • Fluorine modified Fe3O4 magnetic nano material and preparation method and applications thereof

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Embodiment 1

[0029] A kind of fluorine modified Fe 3 o 4 Magnetic nanomaterial, its preparation method comprises the steps: weighing 1.856g FeCl 3 ·6H 2 O was dissolved in 4.5 mL ethylene glycol at 50 °C, and 1.801 g CH 3 COONa was stirred for 10 min, then 0.3 g of NaF was added and stirred for 10 min to obtain a reaction liquid; the resulting reaction liquid was transferred to a reaction kettle, reacted at 198°C for 14 h, then quenched to room temperature, and the obtained black solid was collected by magnetic separation and washed once with ethanol , washed four times with deionized water, and dried at 60°C for 12 hours to obtain the final product.

[0030] The XRD spectrum ( figure 1 ) and Fe 3 o 4 The standard collection of illustrative plates is consistent (JCPDS No.65-3107), shows that product particle has cubic inverse spinel structure; The F1s XPS spectrum of gained product ( figure 2 ) The two peaks at 684eV and 686eV indicate that fluorine exists in two ways: surface fluo...

Embodiment 2

[0032] A kind of fluorine modified Fe 3 o 4 Magnetic nanomaterial, its preparation method comprises the steps: weighing 1.856g FeCl 3 ·6H 2 O was dissolved in 4.5 mL ethylene glycol at 50 °C, and 1.801 g CH 3COONa was stirred for 10 min, and then 0.15 g of NaF was added to continue stirring for 10 min to obtain a reaction solution; the resulting reaction solution was transferred to a reaction kettle, and reacted at 198 ° C for 14 h, then quenched to room temperature, and the obtained black solid was collected by magnetic separation and washed once with ethanol , washed four times with deionized water, and dried at 60°C for 12 hours to obtain the final product.

Embodiment 3

[0034] A kind of fluorine modified Fe 3 o 4 Magnetic nanomaterial, its preparation method comprises the steps: weighing 1.856g FeCl 3 ·6H 2 O was dissolved in 4.5 mL ethylene glycol at 50 °C, and 1.801 g CH 3 COONa was stirred for 10 min, then 0.03 g of NaF was added and stirred for 10 min to obtain a reaction liquid; the resulting reaction liquid was transferred to a reaction kettle, reacted at 198 °C for 14 h, then quenched to room temperature, and the obtained black solid was collected by magnetic separation and washed once with ethanol , washed four times with deionized water, and dried at 60°C for 12 hours to obtain the final product.

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Abstract

The invention discloses a fluorine modified Fe3O4 magnetic nano material and a preparation method and applications thereof, and belongs to the fields of magnetic functional materials and water treatment research. For the first time, an Fe3O4 magnetic nano material is doped and modified by negative fluorine ions; a solvothermal method is adopted to in-situ synthesize the fluorine modified Fe3O4 magnetic nano material, which has an excellent degrading performance on orange G dye wastewater, can be easily and magnetically separated and recovered, and can be used in cycle; furthermore, the raw materials are cheap and easily available, the operation is simple and convenient, and the nano material has a potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of magnetic functional materials and water treatment, in particular to a fluorine-modified Fe 3 o 4 Magnetic nanomaterials and their preparation methods and applications. Background technique [0002] Orange G belongs to azo anionic dyes. Compared with natural dyes, azo dyes have the advantages of low cost, stable structure, and a complete range of colors. The global annual usage of azo dyes accounts for more than 50% of the total dyes, and is widely used in textiles, paper, plastics, leather, pharmaceuticals and other industries. . Azo dyes are difficult to biodegrade and have potential carcinogenic, teratogenic and mutagenic toxicity. Wastewater discharged during production and use has become one of the important sources of water pollution, which constitutes a serious threat to human health and sustainable development of society. serious threat. [0003] There are mainly biological, physical and chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/128B01J35/00B01J35/02C02F1/72C02F101/30
CPCC02F1/725B01J27/128B01J35/0033B01J35/023C02F2101/308
Inventor 陈逢喜陈武张家维
Owner WUHAN INSTITUTE OF TECHNOLOGY
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