Jump to main content
Jump to site search

Issue 47, 2018
Previous Article Next Article

Mechanism of phase transfer of uranyl ions: a vibrational sum frequency generation spectroscopy study on solvent extraction in nuclear reprocessing

Author affiliations

Abstract

Mechanistic understanding of solvent extraction of uranyl ions (UO22+) by tributyl phosphate (TBP) will help improve the technology for the treatment and disposal of spent nuclear fuels. So far, it has been believed that uranyl ions in the aqueous phase are adsorbed to a TBP-enriched organic/aqueous interface, form complexes with TBP at the interface, and are extracted into the organic phase. Here we show that uranyl–TBP complex formation does not take place at the interface using vibrational sum frequency generation (VSFG) spectroscopy and propose an alternative extraction mechanism that uranyl nitrate, UO2(NO3)2, passes through the interface and forms the uranyl–TBP complex, UO2(NO3)2(TBP)2, in the organic phase.

Graphical abstract: Mechanism of phase transfer of uranyl ions: a vibrational sum frequency generation spectroscopy study on solvent extraction in nuclear reprocessing

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Jul 2018, accepted on 12 Nov 2018 and first published on 21 Nov 2018


Article type: Communication
DOI: 10.1039/C8CP04558E
Citation: Phys. Chem. Chem. Phys., 2018,20, 29588-29590
  •   Request permissions

    Mechanism of phase transfer of uranyl ions: a vibrational sum frequency generation spectroscopy study on solvent extraction in nuclear reprocessing

    R. Kusaka and M. Watanabe, Phys. Chem. Chem. Phys., 2018, 20, 29588
    DOI: 10.1039/C8CP04558E

Search articles by author

Spotlight

Advertisements