Spectroscopic Study into Lanthanide Speciation in Deep Eutectic Solvents.

ABSTRACT: Deep eutectic solvents are a new class of green solvents that are being explored as an alternative for used nuclear fuel and critical material recycling. However, there is a paucity of knowledge regarding metal behavior in them. This paper explores the underlying chemistry of rare-earth elements in choline chloride-based deep eutectic solvents by using a multi-technique spectroscopic methodology. Results show that speciation is highly dependent on the choice of the hydrogen-bond donor. Collected EXAFS data showed Ln³⁺ coordination with ethylene glycol and urea in their respective solvents and coordination with chloride in the lactic acid system. Generalized coordination environments were determined to be [LnL_4-5], [LnL_7-10], and [LnL_5-6] in the e

SUBMITTER: Amphlett JTM 

PROVIDER: S-EPMC8756809 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature