The synthesis of nanostars typically involves a seed-mediated growth process. Initially, small nanoparticle seeds are created, and then these seeds are placed in a growth solution containing metal ions and a reducing agent. The conditions of the growth solution, such as pH, temperature, and the presence of surfactants, can be adjusted to control the growth of the arms, resulting in the star-like shape. Various methods such as chemical reduction, photochemical methods, and template-based techniques are used for their synthesis.
