Transformation of Uranyl Peroxide Studtite, [(UO 2 )(O 2 )(H 2 O) 2 ](H 2 O) 2 , to Soluble Nanoscale Cage Clusters



The dissolution behavior of uranyl peroxide studtite, (UO2)(O2)(H2O)22, was examined under a wide range of alkaline aqueous environments with and without the addition of hydrogen peroxide. In the absence of added H2O2, studtite dissolved in aqueous solutions with a tetraethylammonium hydroxide to uranium molar ratio greater than 0.5, and the resulting species in solution characterized by Raman spectroscopy and electrospray ionization mass spectrometry (ESI-MS) is the uranyl peroxide nanocluster U24, [(UO2)(O2)(OH)]24(24-). This is the first demonstration of the formation of uranyl peroxide nanoclusters from studtite in a solution lacking additional hydrogen peroxide. In similar systems containing added hydrogen peroxide (0.01 M - 1.0 M), studtite dissolved in solutions with a TEAOH to uranium ratio greater than 0.1, and the resulting uranyl peroxide species in solution was U28, [(UO2)(O2)1.5]28(28-).


Attribute NameValues
  • Haylie Lobeck

  • Jordan Isner

  • Peter Burns

Journal or Work Title
  • Inorganic Chemistry

  • 58

First Page
  • 6781

Last Page
  • 6789

  • 0020-1669

Publication Date
  • 2019-06

  • Magellan SEM

  • American Chemical Society

Date Created
  • 2019-09-10

  • English

Departments and Units
Record Visibility Public
Content License
  • All rights reserved

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