构建一个全聚合物 S 方案的电子丰富的微环境,以加速从核废水中捕获
Qi Meng1,2, Linzhen Wu1, Tao Chen1
1State Key Laboratory of Environment-Friendly Energy Materials, CAEA Innovation Center of Nuclear Environmental Safety Technology, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
Environmental science & technology
|August 14, 2024
概括
研究人员开发了新的聚合物混合物,以有效地从放射性废水中捕获六价 (U(VI)). 这一突破为核废水处理提供了有希望的解决方案,即使在高辐射水平下也是如此.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 核化学 核化学 核化学
背景情况:
- 核燃料循环过程产生大量含有的放射性废水.
- 从复杂的废水 (酸性,放射性,有机丰富,高杂质) 中有效捕获六价 (U(VI)) 仍然是一个重大挑战.
研究的目的:
- 开发一种有效的材料来从核工业再处理废水中捕获U ((VI).
- 通过先进的材料设计,研究 (VI) 丰富和减少的机制.
主要方法:
- 制造以全聚合物为基础的0D/2D C4N/C6N7同型结构混合体,具有S型电子配置.
- 半导体的带工程,以提高种的缩.
- 使用密度函数理论 (DFT) 和X射线吸收光谱学 (XAS) 的表征.
主要成果:
- 制造的C4N/C6N7同质结构混合体从实际的核废水中捕获了97%以上的.
- 即使在辐射剂量高达100kGy (α,β,γ) 的情况下,也保持了高的U(VI) 丰富比率 (>95%).
- DFT和XAS证实,电荷载体聚合通过不成比例加快了U () 的减少.
结论:
- 开发的S-scheme聚合物混合体在从复杂的放射性废水中捕获U(VI) 方面表现出色.
- 该材料在高辐射下表现出强度,这对于核应用至关重要.
- 这项工作为开发用于核废水处理和去除的先进功能材料提供了洞察力.
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