Efficient composite inorganic antibacterial agent and preparation method thereof

An inorganic antibacterial agent and high-efficiency technology, applied in the field of nanomaterial preparation, can solve the problems of inability to exert the synergistic effect of the carrier and various antibacterial ingredients, difficulty in dispersing the carrier and antibacterial ingredients, single antibacterial active ingredient, etc., to achieve efficient inhibition of bacterial reproduction, Good market prospect, good antibacterial effect

Inactive Publication Date: 2020-05-22
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carriers of these antibacterial materials are all artificially synthesized oxides, which have high cost, single antibacterial active ingredients, and difficulty in dispersing the carrier and antibacterial ingredients, resulting in large dosage, low antibacterial efficiency, and slow speed, and cannot exert the synergistic effect of carriers and various antibacterial ingredients

Method used

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  • Efficient composite inorganic antibacterial agent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0045] Mix 100 g of needle-shaped palygorskite powder with a purity of 95% and 1 g of polyquaternium, add 500 g of deionized water, mix well, then add 2500 g of deionized water, and process it with an ultrasonic processor for 2 hours. In addition, 100 g of deionized water was added to 3 g of graphene oxide, ultrasonically treated for 2 hours, and the resulting suspension was slowly added to the aforementioned palygorskite modified aqueous suspension, stirred while ultrasonically treated for 1 hour, and then added 40g anatase nano-TiO 2 , 3g of silver nitrate, mixed evenly, filtered excess deionized water, and modulated into a slurry with a water content of 60%. The prepared slurry was ground at a high speed of 300 rpm for 12 hours with a high-energy planetary ball mill. Dry the ground powder slurry at 100°C to remove the moisture in the slurry. Calcined at 600°C for 4 hours to make nano-TiO 2 and Ag ions supported on palygorskite. Grind on a high-energy planetary ball mill...

Embodiment 2

[0047] Mix 100 g of velvety palygorskite powder with a purity of 96% and 1 g of polyquaternium, add 500 g of deionized water, mix well, then add 2000 g of deionized water, and treat with an ultrasonic processor for 2.5 hours. In addition, 100 g of deionized water was added to 3 g of graphene oxide, ultrasonically treated for 2.5 hours, and the resulting suspension was slowly added to the aforementioned palygorskite modified aqueous suspension, stirred while ultrasonically treated for 1 hour, and then added 37g anatase nano-TiO 2 1. 4g metal oxide ZnO, mix evenly, filter excess deionized water, and prepare a slurry with a water content of 50%. The prepared slurry was ground at a high speed of 350 rpm for 12 hours with a high-energy planetary ball mill. Dry the ground powder slurry at 150°C to remove the moisture in the slurry. Calcined at 600°C for 4 hours to make nano-TiO 2 and ZnO supported on palygorskite. Grind on a high-energy planetary ball mill to a particle size of ...

Embodiment 3

[0049] Mix 100 g of fibrous palygorskite powder with a purity of 96% and 1 g of polyquaternium, add 500 g of deionized water, mix well, then add 3000 g of deionized water, and process with an ultrasonic processor for 3 hours. In addition, 100 g of deionized water was added to 3 g of graphene oxide, ultrasonically treated for 2.5 hours, and the resulting suspension was slowly added to the aforementioned palygorskite modified aqueous suspension, stirred while ultrasonically treated for 1 hour, and then added 35g anatase nano-TiO 2 , 6g of silver nitrate, mixed evenly, filtered excess deionized water, and modulated into a slurry with a water content of 70%. The prepared slurry was ground at a high speed of 400 rpm for 15 hours with a high-energy planetary ball mill. Dry the ground powder slurry at 120°C to remove the moisture in the slurry. Calcined at 500°C for 4 hours to make nano-TiO 2 and Ag ions supported on palygorskite. Grind on a high-energy planetary ball mill to a p...

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Abstract

The invention discloses an efficient composite inorganic antibacterial agent and a preparation method thereof, belonging to the technical field of nanomaterial preparation. The efficient composite inorganic antibacterial agent comprises the following components in parts by weight: 100 parts of palygorskite, 30-50 parts of a photocatalytic material, 3-5 parts of graphene, 2-8 parts of metal oxide and / or metal salt and 0.5-2 parts of polyquaternium. Palygorskite with a multi-channel structure is used as a carrier and undergoes microcosmic nanometer compounding with the graphene, so a palygorskite carrier and graphene can be kept in a highly dispersed state in the processing and using processes; meanwhile, the photocatalytic material with an antibacterial effect, the metal oxide and the metalsalt are added so as to prepare the novel composite inorganic antibacterial material with multiple synergistic functions including photocatalysis, electron migration wall breaking and metal ion antibiosis; and the contact area of antibacterial active components and bacteria can be increased through good dispersity of the agent, the antibacterial effect is achieved through synergism of the antibacterial components, and therefore, the effects of killing bacteria and efficiently inhibiting bacterial reproduction are achieved.

Description

technical field [0001] The invention relates to an inorganic antibacterial agent and a preparation method thereof, belonging to the technical field of nanomaterial preparation, in particular to a palygorskite-graphene composite high-efficiency inorganic antibacterial agent and a preparation method thereof. Background technique [0002] As we all know, today's world has entered an era of highly developed medical technology and diversified development of the health promotion industry. However, due to exposure to pathogenic bacteria in the environment, infection is still one of the important threats to human beings, resulting in millions of infected patients every year. , and the emergence and spread of bacterial resistance have seriously threatened global public health security, therefore, the development of new antibacterial drugs is one of the key strategies to solve bacterial resistance. At present, antibacterial materials at home and abroad are divided into three series: n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N59/16A01N59/00A01P1/00B01J23/80B01J23/89
CPCA01N25/08A01N59/00A01N59/16B01J23/80B01J23/8906B01J23/8953B01J35/004
Inventor 赵娣芳黄俊俊王淑芬谢劲松李兴宇
Owner HEFEI UNIV
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