Polysubstituted guanidine-based receptors for the selective extraction of pertechnetate anions from high-level waste

2026/01/01 by Uliana M. Leksina, Vladimir Abramov, Petr I. Matveev +8 · 1 voice
Chemistry · Engineering · #Analytical chemistry methods development #Extraction and Separation Processes #Radioactive element chemistry and processing

paper · doi:10.1039/d6dt00057f

openalex publication_date 2026/01/01 · openalex created_date 2026/02/11 · openalex updated_date 2026/06/11

Abstract

back-extraction experiments, revealing the influence of nitric acid concentration, temperature, and alkaline stripping agents. The composition of the extracted species was confirmed by single-crystal X-ray diffraction (SC-XRD) and X-ray absorption spectroscopy (XAS), supporting the formation of discrete ion pairs between the guanidinium cation and pertechnetate anion. These results highlight the potential of guanidine-based receptors for targeted separation of Tc(VII) from complex nuclear waste matrices.

Discussions

• Our new Dalton Transactions paper reports polysubstituted “anglerfish” guanidine receptors that selectively extract TcO₄⁻ from nitric acid solutions and HLW simulants @daltontrans.rsc.org #technetium [bsky, 0 points, 0 comments]

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