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Preparation and application of yttrium oxide-ferroferric oxide composite nanometer antibacterial material

A technology of ferroferric oxide and antibacterial materials, applied in chemical instruments and methods, sterilization/microdynamic water/sewage treatment, special treatment targets, etc., can solve the problem of low utilization rate of visible light and achieve high potential industrial applications Value, excellent antibacterial performance, effect of light-enhanced antibacterial performance

Active Publication Date: 2017-04-26
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its utilization rate of visible light is low, which is greatly limited in practical applications.

Method used

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  • Preparation and application of yttrium oxide-ferroferric oxide composite nanometer antibacterial material
  • Preparation and application of yttrium oxide-ferroferric oxide composite nanometer antibacterial material
  • Preparation and application of yttrium oxide-ferroferric oxide composite nanometer antibacterial material

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Embodiment 1

[0038] The preparation and application of a kind of yttrium oxide-ferric oxide composite nano antibacterial material of the present invention, comprises the following steps successively:

[0039] (1) Dissolve ferric chloride hexahydrate and ferrous dichloride tetrahydrate in deionized water at a molar ratio of Fe(III):Fe(II) of 2:1, and blow N into the solution. 2 30min for deoxygenation;

[0040] (2) Put the solution in a water bath at 60°C and keep N 2 Protect and vigorously stir for 5 minutes, then add 1-2mol / L NH 4 OH solution was slowly added to the solution until the pH was 8, then the solution was mixed and aged at 60°C for 30min;

[0041] (3) The precipitate in the solution is separated by an external magnetic force, and the supernatant is poured out. The precipitate was washed 4 times with deionized water, and then dried overnight at 40°C to obtain nano-ferric oxide;

[0042] ⑷ Weigh 1.552gY (NO 3 ) 3 ·6H 2 O, 0.5g of PVP and weighing 100mg of the product of s...

Embodiment 2

[0053] The preparation and application of a kind of yttrium oxide-ferric oxide composite nano antibacterial material of the present invention, comprises the following steps successively:

[0054] (1) Dissolve ferric chloride hexahydrate and ferrous dichloride tetrahydrate in deionized water at a molar ratio of Fe(III):Fe(II) of 2:1, and blow N into the solution. 2 30min for deoxygenation;

[0055] (2) Put the solution in a water bath at 60°C and keep N 2 Protect and vigorously stir for 5 minutes, then add 1-2mol / L NH 4 OH solution was slowly added to the solution until the pH was 8, then the solution was mixed and aged at 60°C for 30min;

[0056] (3) The precipitate in the solution is separated by an external magnetic force, and the supernatant is poured out. The precipitate was washed 4 times with deionized water, and then dried overnight at 40°C to obtain nano-ferric oxide;

[0057] ⑷ Weigh 1.552gY (NO 3 ) 3 ·6H 2 O, 0.5g of PVP and weighing 100mg of the product of s...

Embodiment 3

[0068] The preparation and application of a kind of yttrium oxide-ferric oxide composite nano antibacterial material of the present invention, comprises the following steps successively:

[0069] (1) Dissolve ferric chloride hexahydrate and ferrous dichloride tetrahydrate in deionized water at a molar ratio of Fe(III):Fe(II) of 2:1, and blow N into the solution. 2 30min for deoxygenation;

[0070] (2) Place the solution in a water bath at 60°C and keep N 2 Protect and vigorously stir for 5 minutes, then add 1-2mol / L NH 4 OH solution was slowly added to the solution until the pH was 8, then the solution was mixed and aged at 60°C for 30min;

[0071] (3) The precipitate in the solution is separated by an external magnetic force, and the supernatant is poured out. The precipitate was washed 4 times with deionized water, and then dried overnight at 40°C to obtain nano-ferric oxide;

[0072] ⑷ Weigh 1.552gY (NO 3 ) 3 ·6H 2 O, 0.5g of PVP and weighing 100mg of the product of...

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Abstract

The invention relates to preparation and application of an yttrium oxide-ferroferric oxide composite nanometer antibacterial material. Preparation of the yttrium oxide-ferroferric oxide composite nanometer antibacterial material includes the following steps that nanometer iron oxide obtained through hydro-thermal synthesis is uniformly dispersed into an yttrium oxide synthesis system, a reaction is conducted in a high-pressure reaction kettle, precipitate is subjected to centrifugal separation and dried and stays overnight, and an yttrium oxide-ferroferric oxide compound is obtained; a nanometer material is subjected to sterilization with absolute ethyl alcohol, then supernatant is removed through centrifugation, then water is added, and the mixture is fully and uniformly mixed; yttrium oxide-ferroferric oxide compound materials of different concentrations are added into a test tube of escherichia coli and staphylococcus of a certain concentration and subjected to shake cultivation under the light or in dark for certain time; and then inhabitation efficiency of the nanometer material to the gram-negative bacterium and the gram-positive bacterium is analyzed through a plate count method. The compound material has a good inhabitation effect on both the gram-negative bacterium and the gram-positive bacterium, particularly on the gram-negative bacterium, is environmentally friendly and cannot cause antibiotic resistance in bacteria and other problems.

Description

technical field [0001] The invention relates to the technical field of preparation of yttrium oxide-ferric oxide composite nanometer material, and also relates to a bacteriostasis method and technology. Background technique [0002] Microbial pollution, such as bacteria, viruses and fungi, has caused great harm to human health. The gram-negative bacterium Escherichia coli and the gram-positive bacterium Staphylococcus aureus are two major pathogenic bacteria that can cause serious infections and diseases. Numerous studies have shown that antibiotics and nano-Ag can effectively kill bacteria. However, the abuse of antibiotics leads to the emergence of drug-resistant bacteria, which has adverse effects on the environment and human beings. Although Ag has high sterilization efficiency as an antibacterial agent, its reuse rate is poor and the cost is high. Therefore, the design, synthesis, and application of low-cost, environmentally friendly, and highly effective antibacteri...

Claims

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Application Information

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IPC IPC(8): C02F1/50
CPCC02F1/50C02F2303/04
Inventor 王宏归周芝峰温芳芳谈晶张娅张涛王新旭陈婷邓玥史新星
Owner YANGZHOU UNIV
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