Silver nanoparticles can be prepared primarily through chemical reduction, where silver nitrate is reduced using agents like sodium borohydride. Other methods include photochemical synthesis and microwave-assisted synthesis, allowing control over particle size and stability for various applications.

Silver nanoparticles can be synthesized using various methods, each with its own advantages and disadvantages. Here are some common methods:

Reduction Method is the most common approach for synthesizing silver nanoparticles. In this method, a silver salt, such as silver nitrate (AgNO3), is mixed with a reducing agent, such as sodium borohydride (NaBH4) or citric acid. The reducing agent facilitates the reduction of silver ions to metallic silver, resulting in the formation of nanoparticles. The process typically occurs in a controlled environment to regulate factors like temperature and pH, which influence the size and distribution of the nanoparticles.

It also varies on the basis of use of nanoparticles further.