magnetite – Page 2 – TechConnect Briefs

Destruction of Organophosphate Agents by Recyclable Catalytic Magnetic Nanoparticles

Bromberg L., Hatton T.A., Massachusetts Institute of Technology, US

Organophosphorus pesticides and warfare agents are not readily hydrolyzed in aqueous media without applying extremes of pH, heat, or bleach. We show that suspensions of magnetite (Fe3O4) nanoparticles modified with a common antidote, 2-pralidoxime (PAM), [...]

Synthesis and Characterization of Magnetite Powders

Silverman B.M., Parasher S., Milner B., Zhou B., Headwaters Technology Innovation Group, US

Low-cost magnetic powders have been synthesized by Headwaters Technology Innovation Group. These powders exhibit a strong magnetic susceptibility mainly due to magnetite formation. The potential applications for this product range from cancer treatment, ferrofluids, to [...]

Nanoscale Maghemite Iron Oxide Powders Prepared by Laser Pyrolysis

Morjan I., Dumitrache F., Alexandrescu R., Birjega R., Voicu I., Gavrila L., Soare I., Filotti G., Kuncser V., Ciupina V., National Institute for Lasers, Plasma and Radiation Physics, RO

Nano-sized maghemite particles (usually less than 15 nm diameter) have been directly synthesized by the laser induced pyrolysis of iron pentacarbonyl vapors. Ethylene was used as sensitizer of the induced reaction. By the controlled use [...]

Destruction of Organophosphate Agents by Recyclable Catalytic Magnetic Nanoparticles

Bromberg L., Hatton T.A., Massachusetts Institute of Technology, US

Organophosphorus pesticides and warfare agents are not readily hydrolyzed in aqueous media without applying extremes of pH, heat, or bleach. We show that suspensions of magnetite (Fe3O4) nanoparticles modified with a common antidote, 2-pralidoxime (PAM), [...]

Internalization of Nanoparticles in the Middle Ear Epithelium in Response to an External Magnetic Field: Generating a Force

Dormer K., Seeney C., Mamedov A., Mondalek F., University of Oklahoma, Coll. of Med., US

In this study we report the first generation of force by long-term intracellular magnetic nanoparticles (MNP) using a guinea pig middle ear model. Synthesis of magnetite nanoparticles was done using a modified precipitation technique. We [...]