Photochemical reactions of aqueous plutonium systems |
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| Affiliation: | 1. Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China;2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;1. Research Centre for Radwaste Disposal and Williamson Research Centre for Molecular Environmental Science, School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Manchester M13 9PL, UK;2. Centre for Radiochemistry Research, School of Chemistry, The University of Manchester, M13 9PL, UK;3. Karlsruhe Institute of Technology, Institut Fur Nukleare Entsorgung, D-76021 Karlsruhe, Germany;1. Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland;2. Institute of Physics – CSE, Silesian University of Technology, Konarskiego 22B, 44-100 Gliwice, Poland |
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| Abstract: | Photochemical effects on four aqueous plutonium perchlorate solutions have been observed and reported. The photochemical reduction of PuO22+ and of Pu4+ to Pu3+ have been observed, and the quantum yields were determined to be 0·02 and 0·03, respectively. A reversible photochemical shift in the equilibrium of the Pu4+ disproportionation was observed, and the equilibrium coefficient increased by a factor of three when the sample was irradiated. Light has been observed to increase the rate and extent of depolymerization of Pu(IV) polymer. |
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