XAFS and LIBD Investigation of the Formation and Structure of Colloidal Pu(IV) Hydrolysis Products
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- 作者：Jö ; rg Rothe ; Clemens Walther ; Melissa A. Denecke ; and Th. Fanghä ; nel
- 刊名：Inorganic Chemistry
- 出版年：2004
- 出版时间：July 26, 2004
- 年：2004
- 卷：43
- 期：15
- 页码：4708 - 4718
- 全文大小：312K
- 年卷期：v.43,no.15(July 26, 2004)
- ISSN：1520-510X
文摘
Pu(IV) oxyhydroxide colloid growth is investigated with XAFS and LIBD. From combined results a model of colloidformation is proposed, which leads to a face-centered cubic Pu sublattice having cation defects, as observed withEXAFS, and a linear dependency of log [Pu(IV)] on -log [H+] with slope -2, in accord with LIBD. The solubility forPu(IV) measured with LIBD is close to the lower limit of the solubility curve from previously reported data.