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Comment Processing & Handling

Making nanoparticles

By Gerald Ondrey |

Scientists from the Materials Science and Technology Div. of the U.S. Naval Research Laboratory (Washington, D.C.; www.nrl.navy.mil) have developed a one-step process to form oxide nanoparticles. The technique is capable of producing large quantities (10 g) of oxide nanoparticles — said to be four orders of magnitude higher yield than other methods, which normally involve metal concentrations in range of millimoles to prevent aggregation. The NRL method uses potassium superoxide (KO2), which, when simply added to an aqueous salt solution, causes a rapid, exothermic reaction with the salts to form insoluble oxide or hydroxide nanoparticles. Such materials have been shown to be crucial components in many applications, including electronic and magnetic devices, energy storage and generation, and medical applications.
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