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A kind of visible light catalytic nano antibacterial material and preparation method thereof

A nano-antibacterial material, antibacterial material technology, applied in chemical instruments and methods, botanical equipment and methods, physical/chemical process catalysts, etc., can solve the problems of unseen applications in the field of antibacterial, low solid solubility of ZnO, volatile Zn, etc. problems, to achieve excellent photocatalytic antibacterial and degradation properties, effective visible light absorption, and strong redox ability

Active Publication Date: 2021-11-19
THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although GaN:ZnO nanoparticles were prepared by Maida in 1994 and showed good photocatalytic properties, it is easy to introduce impurity phases during the preparation process, and Zn is easy to volatilize at high temperature, resulting in low solid solubility of ZnO
At the same time, it has not been applied in the field of antibacterial

Method used

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  • A kind of visible light catalytic nano antibacterial material and preparation method thereof
  • A kind of visible light catalytic nano antibacterial material and preparation method thereof
  • A kind of visible light catalytic nano antibacterial material and preparation method thereof

Examples

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Embodiment

[0045] refer to figure 1 , in this embodiment, a method for preparing a visible light-catalyzed nano-antibacterial material, the specific steps are as follows:

[0046] 1) 9.59g of Ga(NO 3 ) 3 ·xH 2 O (in this example, x is 2) and 8.23g of Zn (CH 3 COO) 2 2H 2 O was mixed into 100 mL of ethylene glycol monomethyl ether solution, and 4.5 mL of ethanolamine was added as a stabilizer, and stirred at 60 °C for 2 hours to form a transparent colloid. The colloid is placed in a tube furnace and heated at 500° C. for 10 h to form Zn-Ga-O precursor powder with a particle size of 10-130 nm.

[0047] 2) Take 2g of ZnO powder with a particle size of 20-40nm, physically mix and grind Zn-Ga-O precursor powder and ZnO powder with a molar ratio of 1:3, and place it in the first corundum crucible 1 . The first corundum crucible 1 containing the mixed powder is placed in a quartz tube with a diameter smaller than that of the cavity of the tube furnace. One end of the quartz tube is open ...

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Abstract

The invention belongs to the field of nano antibacterial materials and environmental protection, in particular to a visible light catalyzed nano antibacterial material and a preparation method thereof. The antibacterial material is a GaN:ZnO quaternary alloy nanoparticle in which GaN is the main lattice and ZnO is in solid solution. Wherein, the solid solubility of ZnO is 23-30 at%, and the band gap is between 2.3-2.6 eV. The nano antibacterial material has a large specific surface area and a suitable energy band structure, and has excellent visible light absorption performance while ensuring strong redox ability. Zn 2+ and Ga 3+ The release of ions and the OH produced by light together lead to the destruction of the bacterial cell wall, which can effectively kill the bacteria. The present invention obtains high crystal quality, single-phase quaternary alloy materials by controlling the nucleation temperature, air flow field and reactants, and solves the problems of narrow photoresponse band, low antibacterial efficiency, poor antibacterial universality, and photocatalytic antibacterial materials. Catalytic degradation of organic matter is poor and other problems.

Description

technical field [0001] The invention belongs to the field of nano antibacterial materials and environmental protection, in particular to a visible light catalyzed nano antibacterial material and a preparation method thereof. Background technique [0002] The rapid development of industrial modernization has brought serious environmental pollution problems. Solving environmental pollution problems is a necessary condition for the sustainable development of human society. Among them, the pollution of drinking water seriously affects human health and living standards. Harmful microorganisms in drinking water can cause various diseases, especially the prevalence of infectious diseases. The traditional method of disinfection of drinking water is to add disinfectants, but some disinfection by-products produced in this process also have varying degrees of impact on human long-term health. [0003] In order to overcome the disadvantages of traditional drinking water disinfection me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N59/00A01P1/00B01J27/24B01J35/02C02F1/30C02F1/50C02F1/70C02F1/72
Inventor 冷冰郭澍张兴来
Owner THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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