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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
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
Volume56Issue:6Pages:3702-3708
Subtype期刊论文
AbstractAs 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
Indexed BySCI
Language英语
WOS IDWOS:000397171100067
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27458
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
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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