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Biological composite material loading nano-silver particle

A technology of nano-silver particles and composite materials, which is applied in the field of bio-composite materials carrying nano-silver particles, can solve the problems of environmental hazards and high carrier cost, achieve the effects of low cost, short preparation period, and improve the current situation of fouling and corrosion

Inactive Publication Date: 2013-02-27
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, nano-silver particles are injected into ultraviolet (UV) pure coatings to obtain antibacterial UV pure coatings for coating the surface of injection preforms, but the carrier used in the above reports is expensive and has certain hazards to the environment.

Method used

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  • Biological composite material loading nano-silver particle
  • Biological composite material loading nano-silver particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 50 mg of mussel shell powder (about 150 μm) and dissolve it in 100 ml of deionized water, stir at room temperature for 30 min after ultrasonication briefly, and then use a pipette gun to take 2 μL of silver nitrate solution with a concentration of 10 mM / L and slowly drop it into the above In the suspension, stir magnetically for 30 minutes to fully disperse on the powdered mussel shell matrix, then slowly drop 3 μL of glucose solution with a concentration of 0.22g / L into the above mixed solution, heat to 40°C and stir magnetically, and react The time is 1 h. During the whole reaction process, the auxiliary ultraviolet light is irradiated for 30 min, until the reaction solution turns from milky white to gray black, that is, the heating is stopped to end the reaction, the product is centrifuged, and the sediment is collected, and vacuum drying is completed at a temperature lower than 45 °C. preparation. Electron microscopy results such as figure 1 Shown: A large num...

Embodiment 2

[0025] Dissolve 100 mg of oyster shell powder (70-150 μm) in 100 ml of deionized water, briefly sonicate and stir at room temperature for 30 min, then use a pipette gun to take 5 μL of silver nitrate solution with a concentration of 10 mM / L and slowly drop it into the suspension In the solution, magnetically stirred for 30 min to fully disperse on the mussel shell powder matrix, and then slowly dripped 7.5 μL of glucose solution into the above mixed solution, heated to 60 °C and magnetically stirred, the reaction time was 1.5 h, the whole reaction process The auxiliary ultraviolet light was irradiated for 1 h until the reaction solution changed from milky white to gray black, that is, the heating was stopped to end the reaction, and the resultant was centrifuged to collect the sediment, which was vacuum-dried at a low temperature of 45 °C.

Embodiment 3

[0026] Example 3 Effect detection

[0027] 1) Take fresh seawater and prepare 2216E medium (taking 1000 mL seawater as an example, the composition is as follows: 5 g peptone, 0.01 g ferric phosphate, 1 g yeast extract, 15-20 g agar. NaOH adjusts the pH value to 7.4-7.6.

[0028] 2) Put the instruments used in the experiment such as watch glasses, glass rods, tweezers, pipettes, sample cotton discs (1.5 cm in diameter) and the prepared medium above in a high-pressure steam sterilizer at 120 Sterilize at ℃ for 30 min.

[0029] 3) Take out the sterilized petri dish and solid medium with a diameter of 9 cm, place them in a sterile operating table, and pour them evenly into a watch glass when the medium is cooled to about 60°C.

[0030] 4) After the medium is solidified, the concentration of viable bacteria is about 8×10 3 CFU / ml of Arthrobacter sulfurus bacteria solution was dripped onto the culture medium, spread evenly on a triangular plate immediately and let stand for 30 m...

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Abstract

The invention relates to a biological composite material loading nano-silver particle. According to the biological composite material loading nano-silver particle, shell powders of mollusks are utilized as carriers, and a redox reaction is combined with an ultraviolet light radiation method to prepare a nano-silver based composite material. By means of a method for preparing the biological composite material loading nano-silver particle, the device is simple, the operation is easy, the preparation period is short, the cost is low, the toxicity is prevented, the method is environment-friendly and suitable for industrialization batch production, the prepared nano-silver particle is controllable in particle size and uniformly distributed in marine organism basal bodies, the monodispersity is good, the nano-silver particle has great application potential in the aspect of bacteriostat material and marine anti-fouling etch-resistant coating, existing marine anti-fouling etch-resistant environment-friendly coatings are enabled to be further upgraded, fouling corrosion current situation of marine ship equipment can be improved, and the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanocomposite materials, and in particular relates to a biocomposite material loaded with nano silver particles. Background technique [0002] Traditional anti-marine biofouling coatings achieve the purpose of antifouling by poisoning the attached organisms through the exudation of toxic antifouling agents. However, the metal organic compound antifouling agents in such coatings will pollute the environment and cause biological variation. Destroy the ecological balance of the ocean and human health. On the basis of banning the use of organotin antifouling coatings with serious environmental hazards since 2008, the International Maritime Organization will gradually begin to restrict the use of cuprous oxide, the main antifouling agent component. Therefore, it is important to protect the marine ecological environment. Under the premise and background, the research and development of new high-effic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N59/16A01P1/00C09D7/12C09D5/16
Inventor 孙承君高冠辉丁海兵曲凌云郑立宋影飞李小云朱曜曜
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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