Method for preparation of gold nanoparticles through pulsed laser

摘要

A method for preparation of gold nanoparticles in aqueous solution through pulsed laser, comprises firstly preparing an aqueous solution including HAuCl₄.H₂O and H₂O₂, followed by allowing a catalytic light source to emit into the aqueous solution for catalysis, such that a plurality of gold nanoparticles are formed in the aqueous solution, the catalytic light source being a pulsed laser. Additionally, it is also possible for firstly placing a porous silicon substrate into the aqueous solution, and then allowing the catalytic light source to emit into the aqueous solution for catalysis, such that the gold nanoparticles are grown on the surface of the porous silicon substrate. In this way, the gold nanoparticles of smaller particle diameters with more uniform size may be obtained without adding a surfactant during the preparation.