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Method for biosynthesis of silver nanoparticles through glochidion eriocarpum champ and application

A nano-silver particle and biosynthesis technology, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve problems such as energy consumption, and achieve the effect of simple raw materials, wide distribution and easy availability of raw materials

Active Publication Date: 2019-06-21
XISHUANGBANNA TROPICAL BOTANICAL GARDEN CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent No. CN106513707B "A nano-silver bacteriostatic agent biosynthesized by using blueberry leaf extract and its preparation process" needs to be heated and refluxed at 90 degrees Celsius for 1 hour, and the process consumes more energy

Method used

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  • Method for biosynthesis of silver nanoparticles through glochidion eriocarpum champ and application
  • Method for biosynthesis of silver nanoparticles through glochidion eriocarpum champ and application
  • Method for biosynthesis of silver nanoparticles through glochidion eriocarpum champ and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1) Collect fresh and healthy abacus cotyledons, wash the leaves with distilled water to remove dust and other impurities; wash and dry for later use;

[0052] 2) Preparation of leaf extract, cut 10 grams of washed and dried fresh leaves into small pieces with scissors, put them into a sterile glass beaker, add 100 ml of distilled water, boil in a microwave oven for 3 minutes, and extract, the extraction temperature 10 degrees, then cool the leaf extract and filter it through Whatmann No. 1 filter paper, and store the filtered extract at 4°C;

[0053] 3) Reaction with AgNO3 Prepare fresh silver nitrate AgNO3 with sterile distilled water, its concentration is 1mol / L, add prepared 100mL AgNO3 into a sterile Erlenmeyer flask, add the above leaf extract, and then cover the Erlenmeyer flask with aluminum foil , 2.5 ml of fresh leaf extracts were mixed, then the beaker was sealed with aluminum foil, and left to stand in the dark at 30 degrees until the solution turned brown. ...

Embodiment 2

[0055] The difference from Example 1 is that the extraction temperature in step 2) is 100 degrees, and in step 3) it is mixed with 15 ml of fresh leaf extract, and shaken at a speed of 500 rpm under 20 degrees of darkness with a constant temperature shaker until the solution It is brown.

Embodiment 3

[0057] The difference from Example 1 is that in step 3, a constant temperature shaker was used to vibrate at 100 rpm at 40° C. and in the dark until the solution turned brown, indicating the synthesis of nano silver.

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Abstract

The invention discloses a biosynthesis method and an application of environment-friendly nanometer silver ions. The synthesis method comprises the steps of collecting glochidion eriocarpum champ freshleaves to be washed and aired; cutting up the glochidion eriocarpum champ leaves, performing heating, extracting and filtering, then, enabling the leaves and a silver nitrate solution to have a reaction under the dark condition until the solution becomes the brownness, and obtaining the nano-silver. Through the reaction, the synthetic method is low in environment requirement, and the nanometer silver ions which are good in dispersion property, moderate in particle diameter, narrow in particle diameter distribution range, free of hurt to the plant growth and being in spherical or near-spherical shape are prepared. Through the experiment, it is found that the nano-silver produced through the method has the repellant effect on termite, and the silver ions have the wide application to the termite prevention and treatment in the wood industry.

Description

technical field [0001] The invention relates to a cheap and efficient method for biosynthesizing environment-friendly nano-silver particles, that is, a method for synthesizing nano-silver by using abacus cotyledon leaves, and the application of the synthesized nano-silver material as a wood protection agent in the wood industry. Background technique [0002] Nano silver (silver nanoparticles) refers to silver particles in which at least one of the three dimensions of length, width and height is within the range of 1-100 nm. Because of its broad antibacterial spectrum, low drug resistance and good biocompatibility, it has been widely used as a preservative in the medical field, daily household field and food field. It can also be used as a probe for biological sequencing. [0003] The synthesis of nano silver includes physical methods, chemical methods, biosynthesis methods and so on. Physical methods require high temperature, high pressure and expensive equipment to synthe...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00B27K3/00
Inventor 桑迪亚肖海峰夏尚文杨效东
Owner XISHUANGBANNA TROPICAL BOTANICAL GARDEN CHINESE ACAD OF SCI
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