Quaternary hybrid magnetic sewage purification material and preparation method thereof

A technology for sewage purification and magnetic composite materials, which is applied in the field of nanomaterials to achieve the effect of enhanced photocatalytic activity

Inactive Publication Date: 2015-05-13
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in view of the problems mentioned above and according to a recent researcher proposed a photocatalytic material that is more effective than TiO2 A new type of surface plasmon photocatalytic material AgX (X=Cl, Br, I) with high utilization rate of visible light, we proposed rGO / Fe3O4 applied in the field of water pollutant treatment / The multifunctional construction of AgAgX quaternary hybrid composite nanomaterials is rarely reported

Method used

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  • Quaternary hybrid magnetic sewage purification material and preparation method thereof
  • Quaternary hybrid magnetic sewage purification material and preparation method thereof
  • Quaternary hybrid magnetic sewage purification material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Dissolve 50mg of graphene oxide in 25mL of ethylene glycol, and obtain a graphene oxide (GO) dispersion after ultrasonication for 2 hours, then weigh 0.9mmol of FeCl 3 ·6H 2 O was dissolved in the above GO dispersion and stirred for 2 h, then 1.8 g of NaAc and 0.5 g of polyethylene glycol were added, and stirred for another 30 min. Transfer the above solution to an autoclave, put it in an oven to react at 200°C for 16 hours, centrifuge after the reaction, wash the obtained product with ethanol, and put it into an oven at 50°C for drying after several cycles. Wash several times with water, magnetically separate, and add the final product into 50 mL of secondary water to form a suspension, which is ready for use.

[0022] Take 1.5mL of the above ultrasonic suspension and add it to 50mL containing 1.2mmol AgNO 3 and 2.3mL, 25wt% NH 3 . h 2 O aqueous solution; after stirring for 30min, add 1.5mL of 0.1M HCl, and vigorously stir for 24h to form a suspension solution...

Embodiment 2

[0024]Dissolve 50mg of graphene oxide in 25mL of ethylene glycol, and obtain a graphene oxide (GO) dispersion after ultrasonication for 2 hours, then weigh 0.6mmol of FeCl 3 ·6H 2 O and 0.3 mmol MnCl 2 4H 2 O was dissolved in the above GO dispersion and stirred for 2 h, then 1.8 g of NaAc and 0.5 g of polyethylene glycol were added, and stirred for another 30 min. Transfer the above solution to an autoclave, put it in an oven to react at 200°C for 16 hours, centrifuge after the reaction, wash the obtained product with ethanol, and put it into an oven at 50°C for drying after several cycles. Wash several times with water, magnetically separate, and add the final product into 50 mL of secondary water to form a suspension, which is ready for use.

[0025] Take 3mL of the above-mentioned sonicated suspension and add it to 50mL containing 1.2mmol AgNO 3 and 2.3mL, 25wt% NH 3 . h 2 O aqueous solution, after stirring for 30 min, add 1.5 mL of 0.1 M HBr, and vigorously stir...

Embodiment 3

[0027] Dissolve 50mg of graphene oxide in 25mL of ethylene glycol, and obtain a graphene oxide (GO) dispersion after ultrasonication for 2 hours, then weigh 0.6mmol of FeCl 3 ·6H 2 O and 0.3 mmol ZnCl 2 ·6H 2 O was dissolved in the above GO dispersion and stirred for 2 h, then 1.8 g of NaAc and 0.5 g of polyethylene glycol were added, and stirred for another 30 min. Transfer the above solution to an autoclave, put it in an oven to react at 200°C for 16 hours, centrifuge after the reaction, wash the obtained product with ethanol, and put it into an oven at 50°C for drying after several cycles. Wash several times with water, magnetically separate, and add the final product into 50 mL of secondary water to form a suspension, which is ready for use.

[0028] Take the 6mL solution of the above-mentioned ultrasonic suspension and add it to 50mL containing 0.6mmol Ag 2 MoO 4 and 2.3mL, 25wt% NH 3 . h 2 O aqueous solution; after stirring for 30min, add 1.5mL of KI, and vig...

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Abstract

The present invention discloses a quaternary hybrid magnetic composite functional material and a preparation method thereof. The composite material is a quaternary hybrid of Ag@AgX, reduced graphene oxide and magnetic nanomaterials. First, the surface of the rGO is sequentially in situ deposited with Fe3O4, MnFe2O4, ZnFe2O4, CoFe2O4 and other iron-based magnetic nanomaterials and grown with AgX precipitate so as to obtain rGO/MFe2O4/AgX ternary complex nanomaterials; and then the ternary complex nanomaterials are exposed to a mercury lamp to obtain the quaternary hybrid magnetic composite material rGO/MFe2O4/Ag@AgX. The material not only has the magnetically responsive property and externally applied magnetic field controllability of magnetic particles, the high adsorption performance, electrical conductivity and other properties of graphene nanomaterials, the photocatalytic property of plasma material Ag@AgX, but also has the surface enhanced raman spectroscopy activity of Ag particles, and the synergistic effect between Ag@AgX and graphene materials enhances the photocatalytic property of Ag@AgX and the SERS activity of Ag, so that the detection limit of the substance to be detected is increased. The material has great potential application value on one-step concentration, magnetic separation, SERS detection and in situ photocatalytic degradation and other aspects of low concentrations of benzene ring organic pollutants in water.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a quaternary hybrid magnetic sewage purification material and a preparation method thereof. Background technique [0002] Industrial organic pollutants, especially organic pollutants with aromatic rings, can exist in the environment and organisms for a long time, causing adverse effects on the ecological environment, people's health, social security, and sustainable economic and social development. The environmental problems caused by this have attracted more and more attention. There are two main tasks in environmental governance: one is to detect and analyze pollutants; the other is to remove pollutants. [0003] Surface-enhanced Raman Scattering (SERS) technology can provide information at the molecular level that is not easily obtained by other detection techniques. It has the advantages of short detection time, low water interference, and no damage to the sample d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/128C02F1/32C02F101/38
Inventor 陈凤华杜俊平陈庆涛黄海洋郑先君方少明陈志军赵涛楠
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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