Abstract
Herein, a very simple and rapid synthesis of silver foam is presented. The foam consists of large agglomerates of nanoparticles. Well-defined silver nanostructures are obtained by ultrasonic irradiation to the aqueous solution of the reactants. The formation of particles is so quick that a short pulse of ultrasonic waves for only 10 s is sufficient to convert the aqueous silver nitrate solution into silver particles foam. Here, silicon is used as a catalyst for the reaction without which there was no formation of above foam. An interesting mechanism is followed by the completion of the reaction, where a self assembly of the as formed particles takes place and results in the formation of a foam of well connected particles. The present method of synthesis of self assembled silver foam is simple, innovative, fast, and is quite effective for bulk formation.
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