痕量铬对三过氧化铀酰络合物中超氧化物形成的影响。
Impacts of trace level chromium on formation of superoxide within uranyl triperoxide complexes.
作者信息
Scherrer Sarah K, Rajapaksha Harindu, Kravchuk Dmytro V, Mason Sara E, Forbes Tori Z
机构信息
Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA.
出版信息
Chem Commun (Camb). 2024 Sep 20;60(76):10584-10587. doi: 10.1039/d4cc03194f.
U(VI) peroxides are important within the nuclear fuel cycle, but reactive oxygen species (ROS) can form upon oxidation. Herein, we identified the spectral signatures of a U(VI) diperoxosuperoxide complex (KUPS-1) and observed that the transformation of U(VI) triperoxide (KUT-1) to superoxide forms occurred with trace-level Cr. U(VI) superoxide complexes were identified in EPR solution spectra without the use of spin-traps.
铀（VI）过氧化物在核燃料循环中很重要，但氧化时会形成活性氧物种（ROS）。在此，我们确定了一种铀（VI）双过氧超氧化物络合物（KUPS-1）的光谱特征，并观察到痕量铬会促使铀（VI）三过氧化物（KUT-1）向超氧化物形式转变。在不使用自旋捕获剂的情况下，在电子顺磁共振溶液光谱中鉴定出了铀（VI）超氧化物络合物。
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