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A high-efficiency antibacterial and antivirus copper-based filter screen with hierarchical structure and its preparation method

A graded structure and high-efficiency technology, applied in the field of air purification, water purification and antibacterial functions, environmental protection materials, can solve the problems of copper ion loss, inconvenient air purification of liquid antibacterial disinfectants, etc., to improve inactivation efficiency, promote Cu The effect of ion release

Active Publication Date: 2021-04-02
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method of using copper-based antibacterial and anti-virus materials is to disperse them and then use them in a solution, but liquid anti-bacterial and anti-virus agents are not convenient for air purification, and when used for water disinfection, copper ions will be lost rapidly with the flow of water

Method used

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  • A high-efficiency antibacterial and antivirus copper-based filter screen with hierarchical structure and its preparation method
  • A high-efficiency antibacterial and antivirus copper-based filter screen with hierarchical structure and its preparation method
  • A high-efficiency antibacterial and antivirus copper-based filter screen with hierarchical structure and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Embodiment 1: (1) Copper mesh pretreatment: firstly prepare a mixed aqueous solution with a solubility of sodium hydroxide of 2.5 mol / L and a solubility of ammonium persulfate of 0.13 mol / L; The copper mesh ultrasonically cleaned with acetone was immersed in the above solution for 30 min; rinsed with deionized water, dried at room temperature for use; (2) preparation of surface modifier: first, 1 volume part of N-N dimethylformamide, 8 volume parts of deionized water and 2 volumes of absolute ethanol were mixed and stirred for 2 minutes, 0.002 parts by mass of terephthalic acid was added, and the mixture was stirred for 2 minutes. (3) Preparation of metal-organic framework: firstly, the above-mentioned surface modifier was heated to 70° C., then the substrate was immersed in the surface modifier for reaction for 20 min, and then dried at 50° C. (4) Loading of nano-visible light photocatalytic material: first absorb visible light-responsive nano-titania sol (one of nitrog...

Embodiment 2

[0043] Embodiment 2: (1) Copper mesh pretreatment: firstly prepare a mixed aqueous solution with a solubility of sodium hydroxide of 2.5 mol / L and a solubility of ammonium persulfate of 0.13 mol / L; The copper mesh ultrasonically cleaned with acetone was immersed in the above solution for 30 min; rinsed with deionized water and then dried at room temperature for use; (2) Preparation of surface modifier: First, 1 volume part of N-N dimethylformamide, 10 volume parts of deionized water and Absolute ethanol was mixed with 0 volume and stirred for 2 minutes, and 0.002 parts by mass of terephthalic acid was added, and stirred for 2 minutes. (3) Preparation of metal-organic framework: firstly, the above-mentioned surface modifier was heated to 70° C., then the substrate was immersed in the surface modifier for reaction for 20 min, and then dried at 50° C. (4) Loading of nano-visible light photocatalytic material: first absorb visible light-responsive nano-titania sol (one of nitrogen...

Embodiment 3

[0044] Embodiment 3: (1) Copper mesh pretreatment: firstly prepare a mixed aqueous solution with a solubility of sodium hydroxide of 2.5 mol / L and a solubility of ammonium persulfate of 0.13 mol / L; The copper mesh ultrasonically cleaned with acetone was immersed in the above solution for 30 min; rinsed with deionized water and then dried at room temperature for use; (2) Preparation of surface modifier: First, 1 volume part of N-N dimethylformamide, 10 volume parts of deionized water and Absolute ethanol was mixed with 0 volume and stirred for 2 minutes, and 0.002 parts by mass of terephthalic acid was added, and stirred for 2 minutes. (3) Preparation of metal-organic framework: First, the above-mentioned surface modifier was heated to 70° C., then the substrate was soaked in the surface modifier for 10 min and then dried at 50° C. (4) Loading of nano-visible light photocatalytic material: first absorb visible light-responsive nano-titania sol (one of nitrogen-doped nano-titani...

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Abstract

The invention discloses an efficient antibacterial and antivirus copper-based filter screen with a hierarchical structure and a preparation method. The antibacterial copper-based filter screen is composed of a copper screen skeleton, a Cu (OH) 2 nanorod array growing on the surface of a copper screen, a Cu-based metal organic framework (Cu-BDC MOF for short, copper-terephthalic acid) array growingon the surfaces of Cu (OH) 2 nanorods, and a visible light photocatalyst loaded on the surface of Cu-BDC MOF. The production comprises four steps of copper net surface pretreatment, preparation of asurface modifier, preparation of a metal organic framework and loading of the nano visible light photocatalytic material. The efficient antibacterial and antivirus copper-based filter screen with thehierarchical structure, disclosed by the invention, can effectively inactivate bacteria, viruses and the like, ensures cleanness of an environmental water source and domestic water, ensures human health, and can be applied to the fields of protective masks, air purification, water disinfection and the like.

Description

technical field [0001] The invention relates to the field of environmental protection materials, in particular to the fields of air purification, water purification and antibacterial functions. Background technique [0002] With the continuous development of the times, people's living standards continue to improve, but in recent decades, there have been many airborne diseases, and the unclean living water has caused the lady's physical discomfort. Therefore, people are eager to develop some technologies to make Air and domestic water are safe and reliable. [0003] Copper and copper ions have a long history of being used as antibacterial agents. They are a broad-spectrum inorganic antibacterial and antiviral material. Their anti-kill mechanisms to microorganisms are: a. Destroy cell membranes and induce protein denaturation through contact reactions; b. Generate reactive oxygen species to inhibit live killing microorganism. The current copper-based antibacterial and disinf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/20A01N59/16A01N59/00A01P1/00C02F1/50C02F1/30C02F1/72C09D5/14
CPCA01N59/00A01N59/16A01N59/20C02F1/30C02F1/50C02F1/725C02F2303/04C02F2305/10C09D5/14
Inventor 鲁启鹏李墨影曹文斌刘文秀曾丽赵金平
Owner UNIV OF SCI & TECH BEIJING
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