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Technologies from wind turbines to electric vehicles rely on critical materials called rare-earth elements.
These elements, though often abundant, can be difficult and increasingly costly to come by. Now, scientists looking for alternatives have reported in ACS’ journal Chemistry of Materials a new way to make nanoparticles that could replace some rare-earth materials and help ensure the continued supply of products people have come to depend on.
Rare-earth elements have unique characteristics that make them very useful. For example, the world’s strongest magnets are made with neodymium. A little too powerful for your refrigerator, these magnets are incorporated into computer disk drives, power windows and wind turbines. But rare earths are challenging to mine and process, and prices can rise quickly in a short period of time. Given the increasing demand for rare earths, Alberto López-Ortega, Claudio Sangregorio and colleagues set out to find substitutes for use in strong magnets.
The researchers used a mixed iron-cobalt oleate complex in a one-step synthetic approach to produce magnetic core-shell nanoparticles. The resulting materials showed strong magnetic properties and energy-storing capabilities. Their approach could signal an efficient new strategy toward replacing rare earths in permanent magnets and keeping costs stable, the researchers say.
The Latest on: Magnetic core-shell nanoparticles
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The Latest on: Magnetic core-shell nanoparticles
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According to Alexander Germov, the obtained nanoparticles with a "core-carbon shell" structure with a magnetic core based on iron and cobalt, after appropriate functionalization, can be used as ...
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This innovative nanoscale structure, featuring a core of palladium and an outer shell of platinum, with the addition of cobalt atom into the platinum shell, provides these nanoparticles with ...
- Cobalt nanoparticles could become a significant player in the pursuit of clean energyon November 4, 2023 at 5:00 pm
This innovative nanoscale structure, featuring a core of palladium and an outer shell of platinum, with the addition of cobalt atom into the platinum shell, provides these nanoparticles with ...
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Magnetic nanoparticles (MNPs) are a recurrent and attractive choice within the biomedical field as imaging and therapeutic agents. Due to their size-dependent properties and multifunctionality, MNPs ...
- Magnetic Nanoparticles in Biosensing and Medicineon April 6, 2021 at 7:37 am
Zavadskiy, Sergey Pavlovich 2020. The classification and modern use of magnetic dosage forms in medicine. Farmacevticheskoe delo i tehnologija lekarstv (Pharmacy and Pharmaceutical Technology), p. 18.
- Ag@SiO2 Core-shell Nanoparticles for Probing Spatial Distribution of Electromagnetic Field Enhancement via Surface-Enhanced R...on August 18, 2020 at 12:03 pm
molecules as they diffuse into Ag@SiO2 core-shell nanoparticles. The porous silica shell limits the diffusion of R6G molecules towards inner Ag cores, thereby allowing direct observation and ...
- A pathway for the growth of Core-Shell Pt-Pd nanoparticles ...on September 30, 2015 at 5:00 pm
The aging of both Pt-Pd nanoparticles and core-shell Pt-Pd nanoparticles has been reported to result in alloying of Pt with Pd. In comparison to monometallic Pt catalysts, the growth of Pd-Pt ...
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