Method for preparing silver nanoparticles through caulis sargentodoxae extracting solution

Abstract

The invention provides a method for preparing silver nanoparticles through a caulis sargentodoxae extracting solution. The method comprises the steps of adding caulis sargentodoxae into deionized water, heating the deionized water containing the caulis sargentodoxae to be boiled and conducting centrifugal separation to obtain a supernatant, namely, the caulis sargentodoxae extracting solution; dissolving silver nitrate crystals into the deionized water to form a silver nitrate solution; heating the caulis sargentodoxae extracting solution to be boiled, adding the silver nitrate solution into the boiling caulis sargentodoxae extracting solution, keeping the pH of a reaction system within 5.3-6.3, conducting a reaction for 1-5 min in a boiling state, conducting centrifugal separation on an obtained reaction solution after completion of the reaction, and drying obtained precipitates to obtain silver nanoparticles. According to the preparation method, adopted equipment is simple, and operation is convenient. The caulis sargentodoxae extracting solution is convenient and easy to get and low in price and has no toxicity. The surfaces of the prepared silver nanoparticles cannot generate toxic chemical reagent residues and generate obvious optical signals. Thus, the synthetized silver nanoparticles can be applied to the biological medicine field.

Description

technical field [0001] The invention belongs to the field of materials science, and relates to a nanometer material, in particular to a method for preparing silver nanoparticle by using red rattan extract. Background technique [0002] Silver nanoparticles have shown excellent performance in the fields of electricity, optics, biomedicine and catalysis, especially in biomedicine, and have a broad application space. Due to its biocompatibility, easy surface modification, small size effect, and large specific surface area, silver nanoparticles are easy to contact with pathogenic microorganisms, thereby exerting a greater biological effect, so they have a wide range of antibacterial and long-lasting sterilization time. advantage. However, in the process of using silver nanoparticles, people gradually found that the surface of silver nanoparticles must be free of chemical reagent residues before it can be further used in biology, so as to achieve the desired effect, and the qual...

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the invention provides a kind of method that utilizes red vine extract to prepare silver nanoparticles, and the described method of using red vine extract to prepare silver nanoparticles will solve the problems in the prior art. The method for preparing silver nanoparticles is cumbersome and easy to pollute the technical problems of the environment

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