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Black phosphorus nanosheet supported silver cluster nano composite, preparation method and application

A technology of nanocomposites and nanosheets, applied in medical preparations containing active ingredients, pharmaceutical formulas, photodynamic therapy, etc., can solve the problems of uncontrollable size of silver clusters and difficulties in the preparation of silver cluster black phosphorus nanocomposites, etc. Achieve synergistic effect of bactericidal properties and simple method

Inactive Publication Date: 2017-12-22
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a nanocomposite of black phosphorus nanosheets loaded with silver clusters and its preparation method and application, aiming to solve the difficulties in the preparation of the existing silver cluster black phosphorus nanocomposites and the problems of silver clusters The problem of uncontrollable size

Method used

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  • Black phosphorus nanosheet supported silver cluster nano composite, preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0048] (1) Add 20 mg of black phosphorus crystals to 50 mL of NMP solvent, sonicate in an ice-water bath for 2 hours, centrifuge the sonicated sample at 2,000 rpm / min for 20 minutes, remove the centrifuged large-sized black phosphorus crystals, and centrifuge the centrifuged liquid at 7,000 rpm / min for 20 minutes , redispersing the obtained solid into a certain amount of NMP solvent to obtain black phosphorus nanosheet dispersion A;

[0049] (2) Weigh 0.34g of silver nitrate and 1g of dodecylamine into 10ml of ethanol, stir well until completely dissolved, and obtain silver amine complex solution B;

[0050] (3) Add 0.2ml of silver amine complex solution B and 0.5mL of black phosphorus nanosheet dispersion into 5mL of ethanol, stir and mix well; then add 1mmol of formaldehyde, and place in a water bath at 40°C for reaction;

[0051] (4) After 2.5 hours of reaction, the samples were taken out, centrifuged at 10000rmp / min for 20 minutes, and the silver cluster / black phosphorus n...

Embodiment 2

[0053] (1) Add 10 mg of black phosphorus crystals to 60 mL of NMP solvent, sonicate in an ice-water bath for 5 hours, centrifuge the sonicated sample at 2,000 rpm / min for 20 minutes, remove the centrifuged large-sized black phosphorus crystals, and centrifuge the centrifuged liquid at 7,000 rpm / min for 20 minutes , redispersing the obtained solid into a certain amount of NMP solvent to obtain black phosphorus nanosheet dispersion A;

[0054] (2) Weigh 0.17g of silver nitrate and 0.5g of tert-butylamine into 5ml of ethanol, stir well until completely dissolved, and obtain silver amine complex solution B;

[0055] (3) Add 0.5ml of silver amine complex solution B and 1mL of black phosphorus nanosheet dispersion into 10mL of NMP, stir and mix well; then add 0.5mmol of acetaldehyde, and place in a 30°C water bath for reaction;

[0056] (4) Take out the sample after 1 hour of reaction, and centrifuge at 10000rmp / min for 20 minutes to obtain the silver cluster / black phosphorus nanosh...

Embodiment 3

[0058] (1) Add 30 mg of black phosphorus crystals to 50 mL of NMP solvent, sonicate in an ice-water bath for 2 hours, centrifuge the sonicated sample at 2,000 rpm / min for 20 minutes, remove the centrifuged large-sized black phosphorus crystals, and centrifuge the centrifuged liquid at 7,000 rpm / min for 20 minutes , redispersing the obtained solid into a certain amount of NMP solvent to obtain black phosphorus nanosheet dispersion A;

[0059] (2) Weigh 0.2g of silver nitrate and 1g of octadecylamine into 10ml of ethanol, stir well until completely dissolved, and obtain silver amine complex solution B;

[0060] (3) Add 0.05ml of silver amine complex solution B and 0.2mL of black phosphorus nanosheet dispersion into 5mL of toluene, stir and mix well; then add 0.05mmol of propionaldehyde, and place in a 30°C water bath for reaction;

[0061] (4) Take out the sample after 2 hours of reaction, and centrifuge at 10000rmp / min for 20 minutes to obtain the silver cluster / black phosphoru...

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Abstract

The invention discloses black phosphorus nanosheet supported silver cluster nano composite, a preparation method and application. The method comprises the steps of adding silver nitrate and organic amine into an ethyl alcohol solvent and mixing to obtain a silver amine complex solution; adding a black phosphorus nanosheet dispersion solution and the silver amine complex solution into an organic solvent, mixing, then adding an aldehyde reducing agent and performing lightproof reaction for 1 to 30h to obtain the black phosphorus nanosheet supported silver cluster nano composite. The method disclosed by the invention has simpleness and easiness in implementation; furthermore, a sedimentation process can be controlled by changing an adding amount and reaction time of sliver amine complex; thus, the size of a sliver cluster in the synthesized nano composition is accurately controlled as 1 to 5nm; according to the nano composition, the black phosphorus and the silver cluster are effectively combined, and a unique sterilization characteristic of the sliver cluster and a synergistic effect with the black phosphorus nanosheet can be given full play in a sterilizing process.

Description

technical field [0001] The invention relates to the field of black phosphorus nanomaterials, in particular to a nanocomposite of black phosphorus nanosheets loaded with silver clusters, a preparation method and an application thereof. Background technique [0002] At present, the emergence and widespread use of antibiotics have promoted the continuous enhancement of bacterial resistance and drug resistance, and the speed of research and development of new antibacterial drugs is difficult to cope with the enhancement of bacterial drug resistance and drug resistance. Human society may face the danger of large-scale bacterial infections that cannot be cured, and the design and development of new high-efficiency antibacterial drugs is imminent. [0003] Among many antibacterial drugs, nano silver has been widely used in antibacterial drugs because of its broad-spectrum antibacterial properties. However, traditional nano-silver antibacterial drugs still have some shortcomings su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K33/38A61K41/00
CPCA61K33/38A61K41/0057A61K2300/00
Inventor 屈军乐王鑫
Owner SHENZHEN UNIV
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