Journal
MATERIALS
Volume 13, Issue 23, Pages -Publisher
MDPI
DOI: 10.3390/ma13235314
Keywords
rare earth ions; electrochemical recovery; amperometry electrodeposition; cyclic voltammetry; actinide ions
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Funding
- National Research Foundation of Korea (NRF) - Korea government (MEST) [2018M2B2A9065523, NRF-2018M2B2A9065523]
- National Research Foundation of Korea [2018M2B2A9065523] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The electrochemical behaviors of rare earth (RE) ions have extensively been studied because of their high potential applications to the reprocessing of used nuclear fuels and RE-containing materials. In the present study, we fully investigated the electrochemical behaviors of RE(III) (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb) ions over a Ni sheet electrode in 0.1 M NaClO4 electrolyte solution by cyclic voltammetry between +0.5 and -1.5 V (vs. Ag/AgCl). Amperometry electrodeposition experiments were performed between -1.2 and -0.9 V to recover RE elements over the Ni sheet. The successfully RE-recovered Ni sheets were fully characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. The newly reported recovery data for RE(III) ions over a metal electrode provide valuable information on the development of the treatment methods of RE elements.
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