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A kind of g-c3n4-zno/hnts composite photocatalyst and its preparation method and application

A technology of g-c3n4-zno and complex light, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as soil and water pollution, human health threats, hidden dangers, etc., to increase Specific surface area, green and efficient pollution treatment technology, and the effect of improving efficiency

Inactive Publication Date: 2017-06-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, antibiotics have been widely used in the prevention and control of human medicine and health and livestock and poultry diseases. Since most antibiotics cannot be completely absorbed by the body, about 90% of antibiotics pass through the excrement of patients and livestock in the form of prototype or metabolites. Discharged into the environment, causing serious pollution to soil and water
Tetracycline antibiotics are currently one of the most widely used antibiotics in the world, and they also belong to the category of emerging pollutants (pharmaceuticals and personal care products, PPCPs), in water, soil and other environmental media There are a lot of residues, which pose a great threat and hidden danger to human health

Method used

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  • A kind of g-c3n4-zno/hnts composite photocatalyst and its preparation method and application
  • A kind of g-c3n4-zno/hnts composite photocatalyst and its preparation method and application
  • A kind of g-c3n4-zno/hnts composite photocatalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of ZnO / HNTs precursor:

[0032] Weigh 0.04g Zn(NO 3 ) 2 ·6H 2 O (zinc nitrate hexahydrate) was put into a glass beaker, 500 mL of deionized water was added to make it completely dissolved, magnetic stirring, 1.0 g of halloysite nanotubes were added, stirred and heated to evaporate to dryness, and the obtained solid was put into an agate mortar Grind to powder, put it in a muffle furnace, and calcined at 400 °C for 3 h, the obtained solid is the ZnO / HNTs precursor;

[0033] (2) g-C 3 N 4 - Preparation of ZnO / HNTs composite photocatalyst:

[0034] Weigh 0.212g of melamine and place it in a glass beaker, add ethanol for heating, and magnetically stir; then add 1.0g of the ZnO / HNTs precursor prepared in step (1) into the above mixed solution, fully magnetically stir and heat and evaporate to dryness to obtain a solid Grind to powder, put it in a muffle furnace for calcination at 520°C, take it out after it is naturally cooled to room temperature and gr...

Embodiment 2

[0037] (1) Preparation of ZnO / HNTs precursor:

[0038] Weigh 0.12g Zn(NO 3 ) 2 ·6H 2O (zinc nitrate hexahydrate) was put into a glass beaker, 500 mL of deionized water was added to make it completely dissolved, magnetically stirred, 1.0 g of halloysite nanotubes were added, stirred and heated to evaporate to dryness, and the resulting solid was put into an agate mortar Grind to powder, put it in a muffle furnace, and calcined at 400 °C for 3 h, the obtained solid is the ZnO / HNTs precursor;

[0039] (2) g-C 3 N 4 - Preparation of ZnO / HNTs composite photocatalyst:

[0040] Weigh 0.212g of melamine and place it in a glass beaker, add ethanol for heating, and magnetically stir; then add 1.0g of the ZnO / HNTs precursor prepared in step (1) into the above mixed solution, fully magnetically stir and heat to evaporate to dryness, to obtain a solid Grind to powder, put it into a muffle furnace for calcination at 520°C, take it out after it is naturally cooled to room temperature a...

Embodiment 3

[0043] (1) Preparation of ZnO / HNTs precursor:

[0044] Weigh 0.20g Zn(NO 3 ) 2 ·6H 2 O (zinc nitrate hexahydrate) was put into a glass beaker, 500 mL of deionized water was added to make it completely dissolved, magnetically stirred, 1.0 g of halloysite nanotubes were added, stirred and heated to evaporate to dryness, and the resulting solid was put into an agate mortar Grind to powder, put it in a muffle furnace, and calcined at 400 °C for 3 h, the obtained solid is the ZnO / HNTs precursor;

[0045] (2) g-C 3 N 4 - Preparation of ZnO / HNTs composite photocatalyst:

[0046] Weigh 0.212g of melamine and place it in a glass beaker, add ethanol for heating, and magnetically stir; then add 1.0g of the ZnO / HNTs precursor prepared in step (1) into the above mixed solution, fully magnetically stir and heat to evaporate to dryness, to obtain a solid Grind to powder, put it into a muffle furnace for calcination at 520°C, take it out after it is naturally cooled to room temperature ...

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PUM

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Abstract

The present invention provides a / HNTs composite photocatalyst and preparation method and use thereof g-C3N4-ZnO, belongs to the technical field of preparation of environmental protection material; using the method of secondary calcination, to prepare a ZnO / HNTs precursor, and then again to a high temperature prepared according to the present invention; / HNTs composite photocatalyst g-C3N4-ZnO prepared calcined, and the resulting coated layer mesh tubular structures g-C3N4-ZnO / HNTs composite photocatalyst for degrading the antibiotic tetracycline wastewater the method is simple, does not cause the formation of secondary pollution and waste of resources, is a green and efficient pollution treatment technology.

Description

technical field [0001] The invention belongs to the technical field of environmental protection material preparation, in particular to a g-C 3 N 4 -ZnO / HNTs composite photocatalyst and preparation method and use thereof. Background technique [0002] Antibiotics are a class of secondary metabolites with anti-pathogen or other activities produced by microorganisms (including bacteria, fungi, actinomycetes) or higher animals and plants in the process of life and production, and have chemical substances that interfere with the developmental functions of other cells . In recent years, antibiotics have been widely used in human medicine and health and the prevention and control of livestock and poultry diseases. Since most of the antibiotics cannot be completely absorbed by the body, about 90% of the antibiotics pass through the excrement of patients and livestock in the form of prototype or metabolite. It is discharged into the environment, causing serious pollution to soil a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/02C02F1/30B01J35/00
Inventor 霍鹏伟李金择周明君叶哲霏马长畅王会琴闫永胜
Owner JIANGSU UNIV
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