Substitutional Disorder of SeO32-/IO3- in the Crystalline Solid Matrix: Insights into the Fate of Radionuclides Se-79 and I-129 in the Environment

doi:10.1021/acs.inorgchem.7b00236

CAS OpenIR > 中科院上海应用物理研究所2011-2020年

	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 Publication	INORGANIC CHEMISTRY
ISSN	0020-1669
Volume	56 Issue:6 Pages:3702-3708
Subtype	期刊论文
Abstract	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.
DOI	10.1021/acs.inorgchem.7b00236
Indexed By	SCI
Language	英语
WOS ID	WOS:000397171100067
Citation statistics	Cited Times:7[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/27458
Collection	中科院上海应用物理研究所2011-2020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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