There are several methods for synthesizing colloidal nanoparticles, including chemical reduction, sol-gel processes, and laser ablation. Each method offers distinct advantages and limitations:
Chemical Reduction: This involves reducing metal salts in a solution using reducing agents, resulting in the formation of nanoparticles. Sol-Gel Process: This method involves the transition of a system from a liquid 'sol' into a solid 'gel' phase. Laser Ablation: High-intensity laser pulses are used to vaporize material from a solid target, forming nanoparticles.
