乌兰酸与层状双氧化物纳米粒子之间的相互作用:对核废水管理的影响
Tamás Péter1,2, Dóra Takács1,2, Szilárd Sáringer1,2
1MTA-SZTE Lendület Biocolloids Research Group, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Hungary.
ACS ES&T water
|December 23, 2024
概括
研究了通过分层双氧化物 (LDH) 合体捕获 (U). 的存在改变了体的大小和聚合,影响了放射性废物整治策略.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 核化学 核化学 核化学
背景情况:
- 有效的捕获对于修复核燃料循环废物至关重要.
- 层状双氧化物 (LDH) 在放射性核素修复方面进行了研究.
- 了解基离子与LDH的相互作用对于废物管理至关重要.
研究的目的:
- 为了研究基离子和Mg-Al层状双氧化物 (LDHs) 之间的相互作用.
- 评估对LDH合物特性和聚合行为的影响.
- 评估对放射性废物处理和整治的影响.
主要方法:
- 合成了两种类型的含有乌拉尼尔的LDH合物:ULDH (共降) 和LDHU (合成后添加).
- 在各种电解质溶液 (NaCl,Na2CO3,Na2SiO3,Na3PO4) 中对合体大小,表面电荷和聚合物的表征.
- 在两个带U的LDH系统中观察到的schoepite (UO2) 8O2 ((OH) 12·12H2O) 的形成.
主要成果:
- 与参考LDH相比,的存在显著减少了ULDH和LDHU合体的大小.
- 在两种含有乌拉尼尔的LDH合体系统中都发生了斯科皮特的形成.
- ULDH和LDHU合物的聚合和恢复受溶液化学的影响,特别是Na2SiO3和Na3PO4.
结论:
- 乌拉尼尔,虽然没有纳入LDH结构,但影响纳米粒子的生长和表面特性.
- 含有乌拉尼尔的LDHs的修改聚合行为对其在放射性废物整治中的使用有直接影响.
- 低度放射体显示出核废物管理的潜力,考虑到它们与和其他放射性核素的相互作用.
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