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Work toward a cleaner way to purify critical metals

ScienceDaily
Summary
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Researchers from Sandia National Laboratories have been pioneering an environmentally friendly method to separate critical rare-earth elements from watery mixtures.

The team's ultimate goal is to design sponges that selectively absorb one rare earth metal while excluding others.

Their findings were recently published in the scientific journal ACS Applied Materials and Interfaces .

Anastasia Ilgen used X-ray spectroscopy to examine the chemical environment of three rare-earth elements in zirconium-based MOFs.

Ilgen proposed that metal hubs with a mixture of metals could create MOF sponges that prefer to adsorb one rare earth over others.

The team has numerous avenues to explore in designing ion-selective MOFs, Ilgen said.

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