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Ternary composite antibacterial material with photodynamic-photothermal synergistic antibacterial activity as well as preparation method and application thereof

A photothermal synergy, ternary composite technology, applied in the field of antibacterial materials and environmental protection, can solve the problems of limited photocatalytic antibacterial activity, low electron-hole separation efficiency, easy and rapid recombination, etc., to enhance the photocatalytic antibacterial performance. , Improve the photocatalytic antibacterial activity and the effect of wide visible light absorption

Inactive Publication Date: 2021-12-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But pure MoS 2 The electron-hole separation efficiency is low and easy to recombine quickly, which leads to the limitation of the photocatalytic antibacterial activity of molybdenum disulfide itself, and needs to be compounded with other materials to enhance its antibacterial performance

Method used

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  • Ternary composite antibacterial material with photodynamic-photothermal synergistic antibacterial activity as well as preparation method and application thereof
  • Ternary composite antibacterial material with photodynamic-photothermal synergistic antibacterial activity as well as preparation method and application thereof
  • Ternary composite antibacterial material with photodynamic-photothermal synergistic antibacterial activity as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1, take 4.16mmol FeCl 3 ·6H 2 0 and 2.15mmol 2-aminoterephthalic acid in a beaker, add 50mL solvent DMF and stir until dissolving to obtain the first reaction mixture;

[0041] Step 2. Transfer the first reaction mixture obtained in Step 1 to a polytetrafluoroethylene autoclave (filling ratio 50%), react at 110°C for 24h, and after the reaction is completed, cool to room temperature, centrifuge and wash with water , dried at 50°C for 12 hours, and finally the sample NH 2 -MIL-101(Fe);

[0042] Step 3: Add 0.3g of sodium molybdate dihydrate and 0.4g of thiourea into 40mL of deionized water, and stir until dissolved to obtain a second reaction mixture;

[0043] Step 4, 0.1g of the sample NH obtained in Step 2 2 -MIL-101(Fe) was dispersed in the second reaction mixture obtained in step 3, stirred evenly and ultrasonically treated for 30 minutes; then, the mixture was transferred to a polytetrafluoroethylene autoclave, and reacted at 180°C for 24 hours. Cool to ro...

Embodiment 2

[0047] Step 1, take 4.16mmol FeCl 3 ·6H 2 0 and 2.05mmol 2-aminoterephthalic acid in a beaker, add 50mL solvent DMF and stir until dissolving to obtain the first reaction mixture;

[0048] Step 2. Transfer the first reaction mixture obtained in step 1 to a polytetrafluoroethylene autoclave (filling ratio 50%), react at 100°C for 20 hours, and after the reaction is completed, cool to room temperature, centrifuge and wash with water , dried at 50°C for 12 hours, and finally the sample NH 2 -MIL-101(Fe);

[0049] Step 3: Add 0.3g of sodium molybdate dihydrate and 0.5g of thiourea into 45mL of deionized water, and stir until dissolved to obtain a second reaction mixture;

[0050] Step 4, 0.1g of the sample NH obtained in Step 2 2 -MIL-101(Fe) was dispersed in the second reaction mixture obtained in step 3, stirred evenly and ultrasonically treated for 30 minutes; then, the mixture was transferred to a polytetrafluoroethylene autoclave, and reacted at 200°C for 20 hours. After ...

Embodiment 3

[0054] Step 1, take 4.16mmol FeCl 3 ·6H 2 0 and 2.47mmol 2-aminoterephthalic acid in a beaker, add 50mL solvent DMF and stir until dissolving to obtain the first reaction mixture;

[0055] Step 2. Transfer the first reaction mixture obtained in step 1 to a polytetrafluoroethylene autoclave (filling ratio 50%), react at 105°C for 22 hours, and after the reaction is completed, cool to room temperature, centrifuge and wash with water , dried at 50°C for 12 hours, and finally the sample NH 2 -MIL-101(Fe);

[0056] Step 3: Add 0.3g of sodium molybdate dihydrate and 0.6g of thiourea into 50mL of deionized water, and stir until dissolved to obtain a second reaction mixture;

[0057] Step 4, 0.1g of the sample NH obtained in Step 2 2 -MIL-101(Fe) was dispersed in the second reaction mixture obtained in step 3, stirred evenly and ultrasonically treated for 30 minutes; then, the mixture was transferred to a polytetrafluoroethylene autoclave, and reacted at 220°C for 25 hours. After ...

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Abstract

The invention discloses a ternary composite antibacterial material with photodynamic-photothermal synergistic antibacterial activity as well as a preparation method and application thereof. The preparation method comprises the steps that a hydrothermal method is utilized, NH2-MIL-101 (Fe) is adopted as a carrier to load MoS2, then ZnO quantum dots are loaded on the surface of a MoS2 nanosheet, the separation efficiency of current carriers is improved, and then the photocatalytic antibacterial performance of the MoS2 nanosheet is enhanced; and a heterostructure formed among NH2-MIL-101 (Fe), MoS2 and ZnO reduces the transition energy barrier of electrons, promotes the separation of photo-induced electrons and holes, promotes the generation of active oxygen and realizes the photocatalytic antibacterial effect, the photo-thermal characteristic of MoS2 enables the MoS2 to generate a large amount of heat and high temperature after illumination to inhibit the growth of bacteria, and the photocatalytic and photo-thermal synergistic effect enables the prepared composite material to show higher antibacterial activity.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials and environmental protection, and relates to a composite material and a preparation method thereof, in particular to a ternary composite antibacterial material with photodynamic-photothermal synergistic antibacterial activity, a preparation method and an application thereof. Background technique [0002] Bacterial infection is a common problem in daily life. The common bacteria causing infection are Staphylococcus aureus and Escherichia coli, which can cause wound inflammation, pneumonia, colitis, sepsis, especially postoperative wound infection may lead to high mortality and It poses a serious threat to human life and health. Antibiotics are an effective way to treat bacterial infections, but long-term use of antibiotics will cause bacteria to develop drug resistance, which seriously threatens people's living environment and ecosystems. Therefore, the research and development of ...

Claims

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Application Information

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IPC IPC(8): A61K41/00A61K47/54A61K47/69A61P31/04B01J31/34B01J37/10B01J27/051A01N59/16A01P1/00B82Y5/00B82Y30/00B82Y40/00B82Y20/00
CPCA61K41/0052A61K47/542A61K47/6923A61P31/04B82Y5/00B82Y30/00B82Y40/00B82Y20/00A61K41/0057B01J31/34B01J37/10B01J27/051A01N59/16B01J35/39
Inventor 刘俊莉程文霞张凯涛刘辉李军奇
Owner SHAANXI UNIV OF SCI & TECH
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