abstract
- Raman spectra of uranium loaded Ag and Au colloidal particles have been measured. It was observed that Raman active symmetric stretching frequency of uranyl ion at 870cm-1 shifts to smaller wavenumber when adsorbed onto Ag and Au particles. The shift depends on pH of the solution for Ag particles, but not for Au particles. The notion that uranium adsorption involves ligand liberation was thus confirmed for Ag particles, while it was discounted for Au particles.