Preparation and application of a molybdenum sulfide-ferric oxide composite nano-antibacterial material

A technology of ferroferric oxide and antibacterial materials, applied in application, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high cost, environmental hazards, low efficiency, etc., and achieve low cost and high removal rate , to ensure the effect of accuracy

Active Publication Date: 2019-06-25
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional antibacterial agents (such as nano-Ag, antibiotics, etc.) have been widely used to kill bacteria, but they have potential harm to the environment, low efficiency, and high cost, which have certain limitations

Method used

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  • Preparation and application of a molybdenum sulfide-ferric oxide composite nano-antibacterial material
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  • Preparation and application of a molybdenum sulfide-ferric oxide composite nano-antibacterial material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation and application of a kind of molybdenum sulfide-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 carry out deoxygenation;

[0040] (2) Put the solution in a water bath at 60°C and keep N 2 Protect and stir vigorously for 5 min, then add 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;

[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] (4) Weigh 1 mmol of sodium molybdate dihydrate, 5 mmol of thioacetamide and 0.5 g of the product of step (3...

Embodiment 2

[0052] The preparation and application of a kind of molybdenum sulfide-ferric oxide composite nano antibacterial material of the present invention, comprises the following steps successively:

[0053] (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 carry out deoxygenation;

[0054] (2) Put the solution in a water bath at 60°C and keep N 2 Protect and stir vigorously for 5 min, then add 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;

[0055] (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;

[0056] (4) Weigh 1 mmol of sodium molybdate dihydrate, 5 mmol of thioacetamide and 0.5 g of the product of step (3...

Embodiment 3

[0066] The preparation and application of a kind of molybdenum sulfide-ferric oxide composite nano antibacterial material of the present invention, comprises the following steps successively:

[0067] (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 carry out deoxygenation;

[0068] (2) Put the solution in a water bath at 60°C and keep N 2 Protect and stir vigorously for 5 min, then add 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;

[0069] (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;

[0070] (4) Weigh 1 mmol of sodium molybdate dihydrate, 5 mmol of thioacetamide and 0.5 g of the product of step (3...

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Abstract

The invention relates to preparation and application of a molybdenum sulfide-ferroferric oxide composite nano bacteriostatic material. A preparation method comprises the following steps: uniformly dispersing nano ferroferric oxide obtained by chemical synthesis into a molybdenum sulfide synthesis system; reacting in a high-pressure reactor; separating precipitates and drying to obtain a molybdenum sulfide-ferroferric oxide compound; sterilizing a nano material by using anhydrous ethanol, centrifuging and then removing supernate, adding water and fully mixing evenly; and adding molybdenum sulfide-ferroferric oxide compound materials with different concentrations into test tubes which contain escherichia coli and staphylococcus, respectively placing the test tubes on a shaker, carrying out shaking culture and analyzing inhibition efficiency. The molybdenum sulfide-ferroferric oxide composite material only has excellent inhibition effect on gram-positive bacterium, and has good selectivity on inhibition of the gram-positive bacterium within a certain concentration range. The composite nano material can also be recycled by ferromagnetism of ferroferric oxide, and is environmentally friendly, and the problems of drug tolerance of bacteria and the like cannot be caused.

Description

technical field [0001] The invention relates to the technical field of preparation of a molybdenum sulfide-ferric oxide composite nanometer material, and also relates to a bacteriostasis method. Background technique [0002] Bacteria are ubiquitous in the environment around us. Bacterial infection has seriously threatened people's health. Traditional antibacterial agents (such as nano-Ag, antibiotics, etc.) have been widely used to kill bacteria, but they have potential harm to the environment, low efficiency, and high cost, which have certain limitations. Therefore, the research and development of environmentally friendly, low-cost, and highly effective antibacterial materials is very important. [0003] In recent years, semiconductors have received significant attention due to their nontoxicity, harmlessness, and excellent antibacterial properties. Molybdenum sulfide is an excellent conductive material with a typical two-dimensional structure and is a good composite car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J35/10A01N59/16A01P1/00C02F1/50
CPCA01N59/16B01J27/0515B01J35/004B01J35/023B01J35/1004C02F1/50C02F2303/04
Inventor 王宏归谈晶张娅周芝峰温芳芳张涛王新旭陈婷史新星刘静冉邓玥
Owner YANGZHOU UNIV
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