Alloy nanoparticle synthesis using ionizing radiation
| DWPI Title: Formation of alloy nanoparticles e.g. tungsten nanoparticles, involves deaerating solution having ionic source compounds of metals, electron solvation species and optionally radical source species, irradiating and reducing |
| Abstract: A method of forming stable nanoparticles comprising substantially uniform alloys of metals. A high dose of ionizing radiation is used to generate high concentrations of solvated electrons and optionally radical reducing species that rapidly reduce a mixture of metal ion source species to form alloy nanoparticles. The method can make uniform alloy nanoparticles from normally immiscible metals by overcoming the thermodynamic limitations that would preferentially produce core-shell nanoparticles. |
| Use: Formation of alloy nanoparticles e.g. tungsten-containing nanoparticles (claimed) used for turbine blade and wear-resistant components. |
| Advantage: The alloy nanoparticles are stably formed. |
| Novelty: A solution containing ionic source compounds of pair of metals, electron solvation species and optionally a reducing radical source species is prepared and deaerated with an inert gas. The solution is irradiated with ionizing radiation at rate desired to form effective concentration of solvated electrons bound to electron solvated species for reducing ionic source compounds. The ionic source compounds are reduced to grow alloy nanoparticles. Thus, alloy nanoparticles are formed. |
| Filed: 11/18/2009 |
| Application Number: US2009620633A |
| Tech ID: SD 10767.1 |
| 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. |
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