Substitutional Disorder of SeO32-/IO3- in the Crystalline Solid Matrix: Insights into the Fate of Radionuclides Se-79 and I-129 in the Environment
Wang, YX; Wang, YM; Zhang, LJ; Chen, LH; Liu, ZY; Yin, XM; Sheng, DP; Diwu, J; Wang, JQ; Liu, N; Chai, ZF; Wang, S
2017
发表期刊INORGANIC CHEMISTRY
ISSN0020-1669
卷号56期号:6页码:3702-3708
文章类型期刊论文
摘要As the crucial soluble species of long-lived radionuclides 1291 and 79Se, iodate and selenite anions commonly share similar geometry of the trigonal pyramid XO3 (X = I, Se) but in different valence states. Although large amounts of investigations have been performed aiming at understanding the environmental behavior of these two anions individually, studies on cases when they coexist are extremely scarce. Structurally well-characterized natural/synthetic crystalline solids simultaneously incorporating these two anions as potential solubility-limiting products at the nuclear waste geological depository remain elusive. We report here a crystalline solid Th(IO3)(2)(Seo(3)) representing the first example of aliovalent substitution between IO3- and SeO32- sharing the same structural site, as demonstrated by single crystal X-ray diffraction, laser-ablation inductively coupled plasma mass spectrometry analysis, and spectroscopic techniques including infrared, Raman, and X-ray absorption spectroscopies. Sequentially, in the Eu(IO3)(3) solid matrix, we demonstrated that the IO3- site can be sufficiently substituted by SeO32- in the presence of Th4+ via simultaneous incorporation of Th4+ and SeO32- in a charge-balancing mechanism The obtained results provide insights into the environmental behavior of fission products Se-79 and I-129: they may cocrystallize in one solid matrix and may be efficiently immobilized by incorporation into each other's solid phase through solid solution.
DOI10.1021/acs.inorgchem.7b00236
收录类别SCI
语种英语
WOS记录号WOS:000397171100067
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27458
专题中科院上海应用物理研究所2011-2018年
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Wang, YX,Wang, YM,Zhang, LJ,et al. Substitutional Disorder of SeO32-/IO3- in the Crystalline Solid Matrix: Insights into the Fate of Radionuclides Se-79 and I-129 in the Environment[J]. INORGANIC CHEMISTRY,2017,56(6):3702-3708.
APA Wang, YX.,Wang, YM.,Zhang, LJ.,Chen, LH.,Liu, ZY.,...&Wang, S.(2017).Substitutional Disorder of SeO32-/IO3- in the Crystalline Solid Matrix: Insights into the Fate of Radionuclides Se-79 and I-129 in the Environment.INORGANIC CHEMISTRY,56(6),3702-3708.
MLA Wang, YX,et al."Substitutional Disorder of SeO32-/IO3- in the Crystalline Solid Matrix: Insights into the Fate of Radionuclides Se-79 and I-129 in the Environment".INORGANIC CHEMISTRY 56.6(2017):3702-3708.
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