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Titanium dioxide nanotube/molybdenum disulfide nanoflower compound as well as preparation method and application thereof

A technology of titanium dioxide and molybdenum disulfide, applied in the direction of nano-medicine, nano-technology, nano-technology, etc., can solve the problems of enzyme-like activity enhancement, etc., and achieve the effects of simple preparation process, easy-to-obtain preparation equipment, and broad market prospects

Pending Publication Date: 2021-08-13
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In particular, the enzyme-like activity and antibacterial efficiency of molybdenum disulfide have also been reported, but as an effective bacteriostatic agent, there is still a lot of room for improving its enzyme activity to release sufficient reactive oxygen species.
[0005] Based on the above status of antibacterial experiments, there is no research report on the combination of molybdenum disulfide nanoflowers and titanium dioxide nanotubes to extend the photoresponse to visible light, enhance the photocatalytic activity, and significantly enhance the enzyme-like activity.

Method used

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  • Titanium dioxide nanotube/molybdenum disulfide nanoflower compound as well as preparation method and application thereof
  • Titanium dioxide nanotube/molybdenum disulfide nanoflower compound as well as preparation method and application thereof
  • Titanium dioxide nanotube/molybdenum disulfide nanoflower compound as well as preparation method and application thereof

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Experimental program
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Embodiment 1

[0029] The specific steps of the preparation method of the titanium dioxide nanotube / molybdenum disulfide nanoflower composite involved in this embodiment include:

[0030](1) Dissolve 11.0-11.5g of sodium sulfate and 0.4-0.5g of sodium fluoride in 100mL deionized water as a buffer electrolyte, and use platinum and titanium as cathode and anode respectively, and apply 18-25V voltage, and reacted for 2 hours to obtain the reacted titanium sheet; then the titanium sheet after the step reaction was cleaned and dried, and then the dried titanium sheet was placed in a tube furnace for air calcination, so as not to exceed the temperature rise per minute The calcination temperature was raised to 450° C. at a rate of 5° C. and maintained for 3 hours. After the reaction was completed, it was naturally cooled to room temperature to obtain silver titanium dioxide nanotubes.

[0031] (2) Add 0.36g dibenzyl disulfide and 0.4g sodium molybdate in the mixed solvent of 60mL ethanol and water,...

Embodiment 2

[0034] The specific steps of the preparation method of the titanium dioxide nanotube / molybdenum disulfide nanoflower composite involved in this embodiment include:

[0035] (1) Utilize anodic oxidation method to prepare titanium dioxide nanotube: step is the same as embodiment 1

[0036] (2) Preparation of titanium dioxide nanotubes / molybdenum disulfide nanoflower composites by solvothermal method: add 0.3-g dibenzyl disulfide and 0.35-g sodium molybdate to a mixed solvent of 60mL ethanol and water, the volume of ethanol and water The ratio is 1:1, stirred and dissolved to obtain a mixed solution, and then the titanium dioxide nanotubes in step (1) are placed in the mixed solution and transferred together into a polytetrafluoroethylene sealed tank to seal and put into a high-temperature reactor for solvent Thermal reaction, the reaction temperature is 180-℃, and the reaction time is 16-hours. After the reaction is completed, after cooling to room temperature naturally, the pol...

Embodiment 3

[0038] The specific steps of the preparation method of the titanium dioxide nanotube / molybdenum disulfide nanoflower composite involved in this embodiment include:

[0039] (1) Utilize the anodic oxidation method to prepare titanium dioxide nanotubes;

[0040] (2) Preparation of titanium dioxide nanotube / molybdenum disulfide nanoflower composite by solvothermal method: add -0.4g dibenzyl disulfide and -0.45g sodium molybdate in 60mL ethanol and water mixed solvent, the volume of ethanol and water The ratio is 1:1, stirred and dissolved to obtain a mixed solution, and then the titanium dioxide nanotubes in step (1) are placed in the mixed solution and transferred together into a polytetrafluoroethylene sealed tank to seal and put into a high-temperature reactor for solvent Thermal reaction, the reaction temperature is -220°C, and the reaction time is -20 hours. After the reaction is completed, cool down to room temperature naturally, take out the polytetrafluoroethylene tank, t...

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Abstract

The invention belongs to the field of nano material preparation and antibiosis, and relates to a titanium dioxide nanotube / molybdenum disulfide nanoflower compound as well as a preparation method and application thereof. The titanium dioxide nanotube / molybdenum disulfide nanoflower compound is prepared by placing titanium dioxide nanotubes in an ethanol mixed solution containing dibenzyl disulfide and sodium molybdate and performing a solvothermal reaction. The molybdenum disulfide nanoflowers are loaded on the surfaces of the titanium dioxide nanotubes, the average size of the titanium dioxide nanotubes is 75 + / -5nm, and the average size of the molybdenum disulfide nanoflowers is 230 + / -20nm. The compound has visible light photocatalysis and peroxidase-like activity at the same time, so that the compound is applied to resisting bacteria and promoting wound healing based on the synergistic effect of the visible light photocatalysis and peroxidase-like activity. The compound is a nano biomimetic material, and the preparation method is ingenious in conception, simple in preparation process, green, environmentally-friendly, rich in raw material and low in cost. The antibacterial mode is novel, visible light is a main component of sunlight, and the visible light is fully utilized to perform photocatalysis to enhance the enzyme-like activity. The application environment and biocompatibility are good, and the market prospect is wide.

Description

Technical field: [0001] The invention belongs to the field of nanomaterial preparation and antibacterial, and relates to a titanium dioxide nanotube / molybdenum disulfide nanoflower composite and its preparation method and application. Anodized electrolytic titanium plate is used, and dibenzyl disulfide and sodium molybdate are used as raw materials The titanium dioxide nanotube / molybdenum disulfide nanoflower composite is synthesized by solvothermal method without adding any surfactant or template, and the composite can effectively improve the antibacterial effect and promote wound healing. Background technique: [0002] At present, bacterial infection has attracted worldwide attention and seriously threatens human health. There is an urgent need to develop effective antimicrobial drugs and strategies as alternatives to antibiotics. With the emergence of novel antibacterial platforms based on nanomaterials, enzyme-like activities have been widely studied for antibacterial a...

Claims

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Application Information

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IPC IPC(8): A61K41/00A61P31/04A61P17/02B82Y5/00B82Y40/00
CPCA61K41/0057A61P31/04A61P17/02B82Y5/00B82Y40/00Y02A50/30
Inventor 牛玉生林郁许元红
Owner QINGDAO UNIV
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