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Preparation method and antibacterial application of copper selenide nano-material with near infrared absorption property

A nano-composite material, copper selenide technology, applied in botany equipment and methods, medical preparations containing active ingredients, nanotechnology for materials and surface science, etc., to achieve low cost, mild reaction conditions, no raw materials Poison effect

Inactive Publication Date: 2018-09-21
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After reviewing the literature, we found that there is no relevant report on the preparation of CuSe / BSA nanocomposites using bovine serum albumin as a template

Method used

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  • Preparation method and antibacterial application of copper selenide nano-material with near infrared absorption property
  • Preparation method and antibacterial application of copper selenide nano-material with near infrared absorption property
  • Preparation method and antibacterial application of copper selenide nano-material with near infrared absorption property

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Experimental program
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Effect test

Embodiment 1

[0032] (1) Take 9.6mL 1mg / mL bovine serum albumin solution, stir at room temperature for 10 minutes, add 0.6mL0.2mol / L tetravalent selenium solution as selenium source, then add 1.8mL 0.4mol / L L-ascorbic acid reduced selenium Simple substance, stirred at 1000-1500rpm for 10 min;

[0033] (2) Get 0.6mL 0.4mol / L anhydrous copper sulfate and 2.4mL 0.4mol / L L-ascorbic acid mixed solution;

[0034] (3) Add the mixed solution group obtained in step (2) dropwise to step (1), react at room temperature for 24 hours, and freeze-dry to obtain the copper selenide nanocomposite material.

Embodiment 2

[0036] (1) Take 8.6mL 2mg / mL bovine serum albumin solution, stir at room temperature for 10 minutes, add 0.6mL0.2mol / L tetravalent selenium solution as selenium source, then add 1.8mL 0.4mol / L L-ascorbic acid reduced selenium Simple substance, stirred at 1000-1500rpm for 10 min;

[0037] (2) Get 0.6mL 0.4mol / L anhydrous copper sulfate and 2.4mL 0.4mol / L L-ascorbic acid mixed solution;

[0038] (3) Add the mixed solution group obtained in step (2) dropwise to step (1), react at room temperature for 24 hours, and freeze-dry to obtain the copper selenide nanocomposite material.

Embodiment 3

[0040] (1) Take 8.6mL 3mg / mL bovine serum albumin solution, stir at room temperature for 10 minutes, add 0.6mL0.2mol / L tetravalent selenium solution as selenium source, then add 1.8mL 0.4mol / L L-ascorbic acid reduced selenium Simple substance, stirred at 1000-1500rpm for 10 min;

[0041] (2) Get 0.6mL 0.1mol / L anhydrous copper sulfate and 1.0mL 0.4mol / L L-ascorbic acid mixed solution;

[0042] (3) Add the mixed solution group obtained in step (2) dropwise to step (1), react at room temperature for 24 hours, and freeze-dry to obtain the copper selenide nanocomposite material.

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Abstract

The invention discloses a preparation method and antibacterial application of a copper selenide nano-material with a near infrared absorption property. The preparation method comprises the following steps: preparing a bovine serum albumin solution with certain concentration and volume; adding a selenium oxide solution with certain concentration and volume into the bovine serum albumin solution anduniformly mixing; then adding a certain amount of ascorbic acid and stirring for 10 to 30min to obtain a solution A; preparing a copper sulfate solution and an ascorbic acid solution, which have certain concentrations and volumes, and uniformly mixing to obtain a solution B; slowly adding the solution B into the solution A; magnetically stirring for 3 to 12h to obtain a copper selenide-protein nano composite solution, wherein the solution has the near infrared absorption property with the wavelength is about 1000nm and has a very good bacterium-inhibition effect on escherichia coli and staphylococcus aureus. The preparation method disclosed by the invention is simple and has moderate reaction conditions and low cost; a product has the near infrared absorption property and has a very goodbacterium-inhibition effect on Gram-positive bacteria and negative bacteria; the product is expected to be applied to the aspects including biomedicines (such as bacterium resistance and photothermaltherapy of cancers), daily chemical cleaning, coating additives and the like.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation and application of antibacterial technology, in particular to a preparation method and application of a copper selenide nanocomposite material. Background technique [0002] Bacterial infection is one of the main ways to endanger human life and health, and millions of people around the world die every year due to bacterial infection. Antibiotics are currently the main drug against bacterial infections. With the continuous research of nanotechnology, it is gradually found that inorganic nanomaterials have the advantages of no drug resistance, good heat resistance, wide antibacterial range, long antibacterial time and low toxicity compared with traditional antibiotics in antibacterial effect. Such materials mainly include: nano-silver, nano-zinc oxide, nano-titanium oxide, nano-copper and copper oxide, etc. The commonly used preparation methods mainly include: chemical vapor deposition, las...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A01P1/00A61K41/00A61P31/04B82Y30/00B82Y40/00
CPCA01N59/20A61K41/0052A61P31/04B82Y30/00B82Y40/00
Inventor 杨大鹏刘明焕
Owner QUANZHOU NORMAL UNIV
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