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Preparation method of chitosan / molybdenum disulfide photocatalytic anti-microbial coating

A molybdenum disulfide and antibacterial coating technology, applied in coating, electrolytic coating, electrophoretic plating, etc., can solve the problems of difficult control of product size and morphology, high reaction temperature of products or reactants, pollution of sulfur-containing gas, etc. , to achieve good pH stability, the preparation method is simple and feasible, and the effect of improving biological activity

Active Publication Date: 2017-07-04
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation methods of nanomolybdenum disulfide mainly fall into two categories: liquid phase method and solid phase method: the liquid phase method has the characteristics of difficult control of product size and shape, poor dispersion, easy polymerization, and poor crystallinity; the solid phase method has the characteristics of reaction High temperature. Products or reactants often contain sulfur-containing gases that pollute the environment

Method used

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  • Preparation method of chitosan / molybdenum disulfide photocatalytic anti-microbial coating
  • Preparation method of chitosan / molybdenum disulfide photocatalytic anti-microbial coating
  • Preparation method of chitosan / molybdenum disulfide photocatalytic anti-microbial coating

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Put 250mg molybdenum disulfide and 200mg chitosan into the mortar and grind for 30min, add 0.5ml of 1-butyl-3-methylimidazolium hexafluorophosphate (ion-assisted grinding solution) into the mortar, and then keep grinding After 120 min, the grinding product was collected, and the product was washed by centrifugation at 9000 rpm with acetone, DMF and 1% acetic acid in sequence, each washing three times, to remove the ionic solution and excess chitosan. Finally, the precipitate was dispersed in deionized water and centrifuged at 1800 rpm for 20 min to remove unexfoliated MoS 2 , the chitosan / molybdenum disulfide nano-dispersion system obtained at this time was diluted to 100ml with deionized water to obtain a chitosan / molybdenum disulfide nano-dispersion system solution and stored at 4°C for use.

[0033] Grind the titanium alloy disc (diameter 6mm, thickness 2.5mm) with sandpaper step by step until 800#, and then ultrasonically clean it in ethanol and deionized water. Et...

Embodiment 2

[0036]Put 250mg molybdenum disulfide and 100mg chitosan into the mortar and grind for 15min, add 0.5ml of 1-butyl-3-methylimidazolium hexafluorophosphate (ion-assisted grinding solution) into the mortar, and then keep grinding After 90 min, the grinding product was collected, and the product was washed by centrifugation at 9000 rpm with acetone, DMF and 0.5% acetic acid in sequence, each washing three times, to remove the ionic solution and excess chitosan. Finally, the precipitate was dispersed in deionized water and centrifuged at 1500 rpm for 20 min to remove unexfoliated MoS 2 , the chitosan / molybdenum disulfide nano-dispersion system obtained at this time was diluted to 100ml with deionized water to obtain a chitosan / molybdenum disulfide nano-dispersion system solution and stored at 4°C for use.

[0037] Grind the titanium alloy disc (diameter 6mm, thickness 2.5mm) with sandpaper step by step until 800#, then ultrasonically clean it in ethanol and deionized water in turn,...

Embodiment 3

[0040] Put 150mg molybdenum disulfide and 200mg chitosan into the mortar and grind for 30min, add 0.5ml of 1-butyl-3-methylimidazolium hexafluorophosphate (ion-assisted grinding solution) into the mortar, and then keep grinding After 120 min, the grinding product was collected, and the product was washed by centrifugation at 9000 rpm with acetone, DMF and 1% acetic acid in sequence, each washing three times, to remove the ionic solution and excess chitosan. Finally, the precipitate was dispersed in deionized water and centrifuged at 1800 rpm for 20 min to remove unexfoliated MoS 2 , the chitosan / molybdenum disulfide nano-dispersion system obtained at this time was diluted to 100ml with deionized water to obtain a chitosan / molybdenum disulfide nano-dispersion system solution and stored at 4°C for use.

[0041] Grind the titanium alloy disc (diameter 6mm, thickness 2.5mm) with sandpaper step by step until 800#, and then ultrasonically clean it in ethanol and deionized water. De...

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Abstract

The invention provides a preparation method of a chitosan / molybdenum disulfide photocatalytic anti-microbial coating. According to the preparation method of the chitosan / molybdenum disulfide photocatalytic anti-microbial coating, the surface of titanium alloy is of a loose porous large-specific-surface-area structure through alkali-heat-treatment, and the surface of the titanium alloy can be provided with the chitosan / molybdenum disulfide photocatalytic anti-microbial coating having the visible light catalysis function and the anti-microbial function and also having good biological compatibility through electrolytic deposition. The preparation method of the chitosan / molybdenum disulfide photocatalytic anti-microbial coating is simple, a reaction medium can be recycled, and the chitosan / molybdenum disulfide photocatalytic anti-microbial coating having the biological activity, the photocatalysis and anti-microbial performance is prepared through the electrolytic deposition method. According to the prepared chitosan / molybdenum disulfide photocatalytic anti-microbial coating, chitosan can help molybdenum disulfide to improve the anti-microbial performance, and meanwhile the biological activity of the molybdenum disulfide is improved.

Description

technical field [0001] The invention relates to the technical fields of material science and nanometer materials, in particular to a preparation method of a chitosan / molybdenum disulfide photocatalytic antibacterial coating. Background technique [0002] Graphene-like two-dimensional material MoS 2 , has a layered structure similar to graphite, and the layers are maintained by relatively weak van der Waals forces. It shows many excellent properties in the fields of machinery, electronics, photocatalysis, etc., and shows potential application in the field of biomedicine. However, Its impact on the environment and biology remains to be explored. Layered nano-MoS 2 The forbidden band width is about 1.80eV, and it has photocatalytic activity under visible light, and because the nanostructured MoS 2 It has a larger specific surface area, which can enhance its catalytic activity [0003] At present, the preparation methods of nanomolybdenum disulfide mainly fall into two categ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D13/20
CPCC25D13/20C25D15/00
Inventor 吴水林冯梓洲刘想梅许子强谭磊
Owner HUBEI UNIV
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