Colloidal silver is a kind of metallic silver with a particle size of nano-level, and its particle size is mostly around 25 nanometers. It can inhibit and kill microorganisms such as Neisseria gonorrhoeae, E. coli, etc. Produce drug resistance. Studies have shown that even if the amount of nano-scale antimicrobial particles reaches several thousand times the standard, no poisoning will occur.
The unique characteristics of colloidal silver include its natural color, adjustable color, no effect on dyeing after application, no toxicity, no pollution, permanent sterilization, and no harm to the human body.
Colloidal silver is prepared by using advanced nano technology, because the application of nano technology on silver has caused qualitative changes in the sterilization effect of silver, which can produce a strong sterilization effect in practical applications, and can also be used in a few minutes. Kills hundreds of bacteria in the body, and at the same time plays a broad-spectrum bactericidal role, can promote wound healing, cell growth and repair of damaged cells, without any toxic reactions, nor any stimulating reactions on the skin, etc. . This opens up broad prospects for the wide application of nano silver to antibacterial, and is the latest generation of natural antibacterial agents.
Due to the excessive use of antibiotics, the resistance of bacteria to antibiotics can be enhanced. With the deepening of nanotechnology research, silver's antibacterial properties have been paid more and more attention.
For the preparation of colloidal silver, there are a variety of methods currently researched:
1.chemical reduction method
2. microbial synthesis method
3. photolysis conversion method
4.chemical deposition method
5. thermal decomposition method
Among them, the chemical reduction method is mainly in the liquid phase, using a reducing agent to reduce silver ions to silver atoms, and grow to obtain colloidal silver. The colloidal silver particles prepared by this method are widely distributed and easy to agglomerate, so stabilizers need to be added to reduce the agglomeration degree of the silver material. Moreover, the nucleation rate and growth rate of the colloidal silver particles have a certain dependence on the concentration, temperature and pH of the reactants.
As some microorganisms have been proven to have the ability to reduce metal ions, it is realized that microbes can be used to prepare nano silver. This method is widely concerned by the society because of its wide source of microbial raw materials. This method of preparing colloidal silver has two different mechanisms: microbial enzymatic mechanism and non-enzymatic reduction mechanism.
Due to their unique optical, electrical and biological properties, nano metal particles can be used in various fields such as catalysis, biosensing, and drug carrier. In addition, experts also believe that the colloidal silver antimicrobial powder can also be widely used in environmental protection, textile apparel, fruit preservation and other fields. Because colloidal silver has an anti-inflammatory effect and is beneficial to wound healing, colloidal silver is widely used in medicine.
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional colloidal silver manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality colloidal silver, please feel free to contact us and send an inquiry.
