Zr/Sn(IV) Phosphonates as Radiolytically Stable Ion-Exchange Materials

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• 作者：Rita Silbernagel ; Thomas C. Shehee ; Caroline H. Martin ; David T. Hobbs ; Abraham Clearfield
• 刊名：Chemistry of Materials
• 出版年：2016
• 出版时间：April 12, 2016
• 年：2016
• 卷：28
• 期：7
• 页码：2254-2259
• 全文大小：346K
• 年卷期：0
• ISSN：1520-5002

文摘

Zirconium and tin phosphonates were synthesized to determine ion-exchange preference and radiolytic stability. The Sn and Zr phosphonate materials were found to have preference for highly charged ions (3+) over lower charged ions (1+, 2+). The materials were exposed to 3.18 × 10⁶ Gray from a Co-60 gamma source and were shown to retain their structure and performance. Ion-exchange of radioactive Am-241 with varying pH was also explored. In this paper, we describe these unusual ion-exchangers that are simple to prepare, reproducible, and do not require phosphate addition.