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Nano-molybdenum sulfide antibacterial material and synthetic method thereof and application thereof

A technology of antibacterial materials and synthesis methods, applied in the directions of molybdenum sulfide, antibacterial drugs, nanotechnology, etc., can solve the problems of difficult control of the size of nanosheets, difficult to effectively capture bacteria, low yield of sheet products, etc. Antibacterial time, increase heat sensitivity, improve the effect of antibacterial aging

Inactive Publication Date: 2016-09-21
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] in MoS 2 Among the several main synthesis methods of nanosheets, most of the methods obtain sheet products with low yields and sizes on the order of microns, which are not easy to be phagocytized by cells or effectively captured by bacteria.
The synthesis process of n-butyllithium intercalation method, which is widely used, must be carried out in a vacuum glove box. The intercalation time is long and hydrogen is generated, and the size of nanosheets is not easy to control.

Method used

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  • Nano-molybdenum sulfide antibacterial material and synthetic method thereof and application thereof
  • Nano-molybdenum sulfide antibacterial material and synthetic method thereof and application thereof
  • Nano-molybdenum sulfide antibacterial material and synthetic method thereof and application thereof

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preparation example Construction

[0037] The invention provides a kind of synthetic method of nano molybdenum sulfide antibacterial material, comprises the following steps:

[0038] (1) Polyethylene glycol solid is dissolved in water, ultrasonic in the ultrasound tank until the polyethylene glycol is completely dissolved, then add the ammonium heptamolybdate solid, and ultrasonicate again to completely dissolve the ammonium heptamolybdate to obtain a mixed solution;

[0039] (2) Take thiourea solid and dissolve it in water, add it to the mixed solution after stirring and dissolving, place it in a hydrothermal reaction kettle with a polytetrafluoroethylene liner after stirring again, seal it, and heat it to react to obtain a black precipitate, namely It is nano molybdenum sulfide antibacterial material.

[0040] Preferably, the black precipitate is repeatedly washed with absolute ethanol and secondary water for 3-5 times, and prepared as a 1 mg / mL aqueous solution for storage.

[0041] Preferably, in the step ...

Embodiment 1

[0049] One-step hydrothermal synthesis method of nano molybdenum sulfide antibacterial material:

[0050] Dissolve 0.5g of polyethylene glycol (PEG) solid with a molecular weight of 20,000 in 20mL of deionized water, sonicate in the ultrasonic tank until the PEG is completely dissolved, add 0.1766g of ammonium heptamolybdate solid, and ultrasonically dissolve it completely for 10 minutes to obtain a mixed solution. Dissolve 2 mmol of solid thiourea in 10 mL of deionized water, stir to dissolve, add to the above mixed solution, stir for 10 minutes, place in a polytetrafluoroethylene-lined hydrothermal reactor, seal, and react at 180°C for 12 hours. The obtained black precipitate was repeatedly washed with absolute ethanol and secondary water for 3-5 times, and prepared as a 1 mg / mL aqueous solution for storage.

Embodiment 2

[0052] It is basically the same as Example 1, the difference is:

[0053] In the step (1), the mass volume ratio of polyethylene glycol to water is 0.4g:20mL.

[0054] The mass ratio of polyethylene glycol to ammonium heptamolybdate is 0.3:0.1766.

[0055] The mass molar ratio of polyethylene glycol and thiourea is 0.4g:2mmol.

[0056] In the step (2), the molar volume ratio of thiourea to water is 2mmol:15mL.

[0057] In the step (2), the stirring time is 5 minutes again, and / or the heating temperature is 200° C., and the reaction time is 10 hours.

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Abstract

The invention discloses a nano-molybdenum sulfide antibacterial material and a synthetic method thereof and application thereof. The synthetic method comprises the following steps: (1) dissolving polyethylene glycol solid in water, performing ultrasonic processing in an ultrasonic pool until the polyethylene glycol is dissolved completely, adding ammonium heptamolybdate solid, and performing ultrasonic processing until the ammonium heptamolybdate is dissolved completely to obtain a mixed solution; and (2) dissolving thiourea solid in water, dissolving the thiourea with stirring, adding the dissolved thiourea into the mixed solution, stirring the mixture, putting the mixture into a hydrothermal reactor having a polytetrafluoroethylene inner container, sealing the reactor, and performing heating reaction to obtain a black precipitate which is the nano-molybdenum sulfide antibacterial material. The invention also provides the nano-molybdenum sulfide antibacterial material which is prepared by the synthetic method. The invention also provides application of the nano-molybdenum sulfide antibacterial material on synergistic anti-microbial combining biomimetic catalysis hydrogen peroxide and near-infrared optothermal. The nano-molybdenum sulfide antibacterial material prepared by the synthetic method in the invention has high yield, and can be captured easily by bacteria. Moreover, the antibacterial effect of the material is obviously better than that of single biomimetic catalysis anti-microbial or single near-infrared optothermal anti-microbial.

Description

technical field [0001] The invention relates to the field of antibacterial material preparation, in particular to a nanometer molybdenum sulfide antibacterial material and its synthesis method and application. Background technique [0002] Inflammatory diseases caused by bacteria have seriously endangered human health. The advent of clinically used antibiotics for antibacterial and anti-inflammation has saved many patients with bacterial infections. However, whether natural or synthetic antibiotics are used or abused for a long time In the process, the problem of bacterial drug resistance will become more and more serious. At the same time, the abuse of artificially synthesized antibiotics may also cause serious environmental pollution. Although natural antibiotics are less toxic and polluted, the processing and synthesis conditions are harsh, which is not conducive to large-scale industrialization. Thereby limiting its application in the medical field. [0003] The rapid d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B82Y30/00B82Y40/00A61K41/00A61P31/04A61K33/40
CPCA61K33/40A61K41/0052B82Y30/00B82Y40/00C01G39/06C01P2004/03C01P2004/04C01P2004/20C01P2004/64
Inventor 尹文艳余杰谷战军赵宇亮
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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