Direct formation of metal nanoparticles using ultrasound

DWPI Title: Forming metal nanoparticles involves providing bulk metal in solution comprising self-assembled monolayer-forming surfactant and emulsion-forming surfactant in solvent, and ultrasonicating solution to form metal nanoparticles
Abstract: A method for creating nanoparticles directly from bulk metal by applying ultrasound to the surface in the presence of a two-part surfactant system. Implosive collapse of cavitation bubbles near the bulk metal surface generates powerful microjets, leading to material ejection. This liberated material is captured and stabilized by a surfactant bilayer in the form of nanoparticles. Nanoparticles can be produced regardless of the bulk metal form factor. The method is generally applicable of metals and alloys. The method can be applied to an environmentally important problem, the reclamation of gold from an electronic waste stream.
Use: Method for forming metal nanoparticles.
Advantage: The method enables to form metal nanoparticles, which eliminates the need for the toxic dissolution and reduction steps, and use different bulk metal sources.
Novelty: Forming metal nanoparticles involves providing a bulk metal in a solution comprising a self-assembled monolayer-forming surfactant and an emulsion-forming surfactant in a solvent, and ultrasonicating the solution to form metal nanoparticles which are stabilized in the solution by an organic bilayer comprising the self-assembled monolayer-forming surfactant and the emulsion-forming surfactant.
Filed: 12/13/2018
Application Number: US16219482A
Tech ID: SD 13844.2
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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