Transformation of Uranyl Peroxide Studtite, [(UO2)(O2)(H2O)2](H2O)2, to Soluble Nanoscale Cage Clusters
| Autor: | Jordan K. Isner, Haylie L. Lobeck, Peter C. Burns |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
inorganic chemicals
Aqueous solution 010405 organic chemistry Chemistry Electrospray ionization chemistry.chemical_element Uranium 010402 general chemistry 01 natural sciences 0104 chemical sciences Nanoclusters Inorganic Chemistry chemistry.chemical_compound Uranyl peroxide Studtite Physical and Theoretical Chemistry Hydrogen peroxide Dissolution Nuclear chemistry |
| Zdroj: | Inorganic Chemistry. 58:6781-6789 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/acs.inorgchem.9b00230 |
| Popis: | The dissolution behavior of uranyl peroxide studtite, [(UO2)(O2)(H2O)2](H2O)2, 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)]2424–. 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]2828–. |
| Databáze: | OpenAIRE |
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