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Application of black phosphorus composite material

A composite material, black phosphorus technology, used in applications, chemicals for biological control, animal repellants, etc., can solve the problems of harsh reaction conditions, low efficiency, toxicity, etc. expansive effect

Inactive Publication Date: 2020-06-19
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are inefficient, toxic, and the reaction conditions are relatively harsh.

Method used

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  • Application of black phosphorus composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The synthesis of black phosphorus composites includes the following steps:

[0035] (1) The bulk black phosphorus crystals were ground into black phosphorus powder and transferred into a glass bottle containing DMF. The mixture was then sonicated by an ultrasonic cell disruption system for 12 h, and the temperature of the dispersion was kept below 16 °C using an ice bath. Finally, the suspension was centrifuged to obtain black phosphorus nanosheets in the range of 1000-4000 rpm. Disperse black phosphorus nanosheets in anhydrous acetonitrile at a concentration of 1 mg / mL for synthesis.

[0036] (2) Use p-ethanolyl aryl diazonium salt (0.619g), tetrabutylammonium hexafluorophosphate (1.977g) and black phosphorus solution (1mg / mL, 10mL) in the dark under nitrogen and stir for 3h.

[0037] (3) In the presence of triethylamine (120mmoL / L), react the above-mentioned terminal hydroxyl black phosphorus material with a dichloromethane solution (100mmoL / L) of 2-bromopropionyl b...

Embodiment 2

[0041] The application of black phosphorus composite materials in capturing and killing bacteria, the capturing of bacteria includes the following steps:

[0042] (1) Take different amounts of BP-PNIPAM solution (100 μL or 200 μL) with a concentration of 1 mg / mL and mix them with E. 6 CFU), at the place where the vertical distance between the top of the mixed solution and the liquid surface is 10cm, it is irradiated by a near-infrared light source for 5min; wherein, the near-infrared light source (see image 3 ) is 808nm, 2W / cm 2 .

[0043] Control group: Take 100 μL or 200 μL black phosphorus solution (1mg / mL) and mix them with E. coli bacterial liquid respectively until the mixed system is 1 mL (the final concentration of E. coli is 106 CFU), and put it at a place where the vertical distance between the top of the mixed solution and the liquid surface is 10cm , irradiated by a near-infrared light source for 5 minutes; wherein, the near-infrared light source (see image 3 ...

Embodiment 3

[0047] The application of black phosphorus composite material in killing bacteria includes the following steps:

[0048] (1) Take the aqueous solutions (1 mg / mL) of the above-mentioned different amounts of black phosphorus composite materials and mix them with the E. 7 CFU); above the mixed solution and the vertical distance from the liquid surface is 10cm, irradiated by a near-infrared light source for 20min, wherein the near-infrared light source is 808nm, 2W / cm 2 ; At the same time, no near-infrared light source was used as a control.

[0049] The aqueous solutions of different amounts of black phosphorus composite materials are respectively 0 μL, 5 μL, 10 μL, 20 μL, 50 μL, 100 μL or 200 μL;

[0050] (2) To dilute the above mixture 4 times. Take the 3rd and 4th solutions and spread them on the plates, incubate the plates in an incubator at 37°C for 14 hours, then count and perform statistical analysis (see Figure 6-7).

[0051] As can be seen from Figures 6 and 7, the ba...

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Abstract

The invention relates to the field of nanomaterial sterilization, in particular to application of a black phosphorus composite material in capture and sterilization. According to the application of the black phosphorus composite material in capture and sterilization, when the black phosphorus composite material is used for killing bacteria, a reaction is fast, effect is good, secondary pollution is avoided in a sterilization mode, black phosphorus degradation products are environmentally friendly, and the application field of the black phosphorus composite material is wide.

Description

technical field [0001] The invention relates to the field of sterilization of nanometer materials, in particular to the application of a black phosphorus composite material in capture and sterilization. Background technique [0002] Bacteria and other pathogenic microorganisms enter the human body through air, water, food, medical sources, and contact transmission, posing a huge threat to our health. The traditional treatment method is antibiotic treatment, but the emergence of drug-resistant strains has brought great challenges to the treatment method. Nanomaterials have attracted extensive attention due to their excellent properties such as antibacterial properties, large specific surface area, many reaction sites, and small size, which are easy to enter bacteria. [0003] General nanomaterial sterilization methods can be divided into physical mechanism and chemical mechanism. Physical mechanisms, such as graphene, kill bacteria by disrupting the membrane structure of ce...

Claims

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Application Information

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IPC IPC(8): A01N59/26A01N25/26A61L2/08A01P1/00
CPCA01N25/26A01N59/26A61L2/085
Inventor 张雪娇邓烁赵青张思玉
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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