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Fe3O4@g-C3N4/RGO composite photocatalyst and preparation method thereof

A g-c3n4, catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of high photogenerated electron-hole recombination rate, affecting photocatalytic activity and stability, specific Low surface area and other problems, to achieve the effect of improving photocatalytic activity, good magnetism, and high degradation rate

Inactive Publication Date: 2018-09-28
LIAONING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since g-C 3 N 4 Low specific surface area and high recombination rate of photogenerated electron-hole pairs directly affect its photocatalytic activity and stability

Method used

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  • Fe3O4@g-C3N4/RGO composite photocatalyst and preparation method thereof
  • Fe3O4@g-C3N4/RGO composite photocatalyst and preparation method thereof
  • Fe3O4@g-C3N4/RGO composite photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Fe of the present invention 3 o 4 @g-C 3 N 4 / RGO composite photocatalyst, follow the steps below:

[0019] a. Prepare g-C according to prior art 3 N 4 Powder: Add melamine into the crucible, then transfer it to a high-temperature muffle furnace for thermal polymerization; after the temperature of the muffle furnace cools down to room temperature, take out the crucible, and grind the solid sample in the crucible into powder, then The sample was dried in an oven to obtain g-C 3 N 4 pink;

[0020] b. Change g-C 3 N 4 Disperse the powder in ethylene glycol, keep ultrasonic magnetic stirring in the water bath, then add ferric nitrate nonahydrate, sodium acetate, polyethylene glycol 4000 and polyvinylpyrrolidone to it, continue ultrasonic stirring, and then add redox graphite olefin until the added raw materials are uniformly dispersed or dissolved to obtain a dispersion; the g-C 3 N 4 , ethylene glycol, ferric nitrate nonahydrate, sodium acetate, polyethylene gl...

Embodiment 2

[0024] Fe of the present invention 3 o 4 @g-C 3 N 4 / RGO composite photocatalyst, follow the steps below:

[0025] a. Prepare g-C according to prior art 3 N 4 Powder: Add melamine into the crucible, then transfer it to a high-temperature muffle furnace for thermal polymerization; after the temperature of the muffle furnace cools down to room temperature, take out the crucible, and grind the solid sample in the crucible into powder, then The sample was dried in an oven to obtain g-C 3 N 4 pink;

[0026] b. Change g-C 3 N 4 Disperse the powder in ethylene glycol, keep ultrasonic magnetic stirring in the water bath, then add ferric nitrate nonahydrate, sodium acetate, polyethylene glycol 4000 and polyvinylpyrrolidone to it, continue ultrasonic stirring, and then add redox graphite olefin until the added raw materials are uniformly dispersed or dissolved to obtain a dispersion; the g-C 3 N 4 , ethylene glycol, ferric nitrate nonahydrate, sodium acetate, polyethylene gl...

Embodiment 3

[0030] Fe of the present invention 3 o 4 @g-C 3 N 4 / RGO composite photocatalyst, follow the steps below:

[0031] a. Prepare g-C according to prior art 3 N 4 Powder: Add melamine into the crucible, then transfer it to a high-temperature muffle furnace for thermal polymerization; after the temperature of the muffle furnace cools down to room temperature, take out the crucible, and grind the solid sample in the crucible into powder, then The sample was dried in an oven to obtain g-C 3 N 4 pink;

[0032] b. Change g-C 3 N 4Disperse the powder in ethylene glycol, keep ultrasonic magnetic stirring in the water bath, then add ferric nitrate nonahydrate, sodium acetate, polyethylene glycol 4000 and polyvinylpyrrolidone to it, continue ultrasonic stirring, and then add redox graphite olefin until the added raw materials are uniformly dispersed or dissolved to obtain a dispersion; the g-C 3 N 4 , ethylene glycol, ferric nitrate nonahydrate, sodium acetate, polyethylene gly...

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Abstract

The invention discloses a Fe3O4@g-C3N4 / RGO composite photocatalyst which has better photocatalytic activity and stability and can effectively degrade tetracycline. The composite photocatalyst is thatlaminated RGO is inserted among layers of layered g-C3N4, and the upper surfaces of the g-C3N4 and the RGO are supported with nanowires formed by Fe3O4 particles. The preparation method is performed according to the following steps in sequence: dispersing the g-C3N4 powder into ethylene glycol, adding iron nitrate nonahydrate, sodium acetate, polyethylene glycol 4000 and polyvinylpyrrolidone intothe mixed solution, continuing ultrasonic stirring, and adding reduced graphene oxide into the stirred solution until the added raw materials are uniformly dispersed or dissolved to obtain a dispersion liquid; filling the obtained dispersion liquid into a hydrothermal reactor, and performing a reaction for 10-15 h at temperature of 180-220 DEG C; and performing cooling to room temperature, collecting a solid product, performing washing, and performing drying to obtain the composite photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, in particular to a kind of Fe which has good photocatalytic activity and stability and can effectively degrade tetracycline. 3 o 4 @g-C 3 N 4 / RGO composite photocatalyst and preparation method. Background technique [0002] At present, the treatment methods for organic pollutants such as tetracycline in environmental wastewater include adsorption method, biodegradation method, micro-electrolysis method, photocatalysis method, etc. Among them, photocatalysis method is an ideal green technology that can degrade organic matter. For small molecules that are not harmful to the environment, even carbon dioxide, water, etc. Ink carbon nitride (g-C 3 N 4 ) is a new type of narrow bandgap (2.7eV) organic photocatalyst, which has been applied in the fields of photocatalytic hydrogen production, water oxidation, organic degradation, photosynthesis and carbon dioxide reducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/10C02F1/30C02F101/30
CPCC02F1/30B01J27/24B01J37/10C02F2101/30C02F2305/10B01J35/33B01J35/39
Inventor 刘志樊文倩朱志霍鹏伟闫永胜
Owner LIAONING NORMAL UNIVERSITY
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