There are various methods to synthesize metal nanoparticles, broadly categorized into physical, chemical, and biological methods. Common techniques include:
1. Chemical Reduction: Utilizing reducing agents to convert metal salts into nanoparticles. 2. Sol-Gel Method: Hydrolysis and condensation of metal alkoxides. 3. Biological Synthesis: Using plants or microorganisms to produce nanoparticles in an eco-friendly manner.
