Metal nano silver material and synthesis method and application of metal nano silver material

Abstract

The invention discloses a metal nano silver material and a synthesis method and application of the metal nano silver material. The synthesis method comprises the steps of: crushing dried loquat leaves, and sieving the crushed dried loquat leaves through a sieve of 100-200 meshes to obtain loquat leaf powder; mixing the loquat leaf powder with water, heating the mixture in a water bath environmentat the temperature of 55-65 DEG C for 20-30 minutes, then cooling the mixture to room temperature of 20-25 DEG C to obtain a mixture of the loquat leaf powder and the water, and carrying out suction filtration on the mixture of the loquat leaf powder and the water to obtain a loquat leaf extracting solution; mixing the loquat leaf extracting solution with a silver nitrate aqueous solution, adjusting the pH value to 7-8, and carrying out mechanical stirring for at least 10 minutes at the temperature of 20-80 DEG C to obtain a reaction product; and carrying out multiple centrifugations on the reaction product by using water to clean the reaction product, and carrying out vacuum drying on a precipitate obtained by the multiple centrifugations at the temperature of minus 4 DEG C for at least 24 hours to obtain the metal nano silver material. The metal nano silver material can improve the degradation rate of active red 120 and active black 5.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to a metal nanosilver material and its synthesis method and application. Background technique [0002] With the development and maturity of biotechnology and bionanotechnology, the research process of bionanomaterials has been greatly promoted. Bio-nanotechnology refers to a relatively new technical method that uses biological principles to generate new materials at the nanometer scale. Biosynthetic environment-friendly nanomaterials have their unique advantages, and multifunctional biosynthetic nanoparticles (bio-NPs) such as metals can be prepared by utilizing biochemical reactions in other biomass such as microorganisms and plant extracts. The main advantage of this method is that stable biosynthetic nanomaterials can be obtained directly through chemical reduction reactions, and the main components of the synthesis are non-toxic intermediates. Theref...

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Problems solved by technology

[0004] Traditional physical methods include mechanical abrasion, melt mixing, laser ablation, sputtering deposition, microwave-assisted synthesis, etc. Physical synthesis methods have high toxicity of raw materials, and chemical reagents attached to the surface of generated nanoparticles will increase the toxicity of synthesized nanoparticles. It is suitable for biomedical use and has the characteristics of environmental risks; traditional chemical synthesis methods include chemical precipitation method, chemical reduction method, sol-gel method, hydrothermal method, solvothermal synthesis method, etc., because the reaction conditions are often accompanied by high temperature, high pressure and strong Disadvantages such as harsh reaction conditions such as radiation, cumbersome process, and high cost of mass production

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