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基于triazine的富含的多孔聚合物材料,用于选择性和有效的动态捕获低度蒸汽和甲基化物

Man He¹, Hui Zhu¹, Guoren Li¹

¹Nuclear Medicine and Radiation Safety Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, PR China; School of Physics and Astronomy, China West Normal University, Nanchong 637002, PR China.

Journal of hazardous materials

|December 27, 2025

概括

一种新的富含的多孔聚合物有效地从核废物中捕获放射性 (I2) 和甲基 (CH3I). 这种材料在恶劣条件下表现出高容量和稳定性,为环境修复提供了有希望的解决方案.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
核工程核工程是指核工程.

背景情况:

放射性 (I2) 和甲基 (CH3I) 是核废物中危险的挥发性裂变产物.
它们的长期放射性对环境和人类健康构成重大风险.
有效的捕获和封存策略对于核废物管理至关重要.

研究的目的:

合成一种新的富含的多孔有机聚合物 (CTP-BPA),用于共同捕获I2和CH3I.
评估材料在静态和动态条件下的性能.
评估材料在与核废物流相关的模拟恶劣环境中的稳定性.

主要方法:

通过使用基于三的前体的希夫基反应合成CTP-BPA.
使用各种技术进行材料表征,以确认多孔结构和活性部位.
气体吸附实验 (静态和动态) 来确定捕获能力.
在酸性,高温和高湿度条件下进行稳定性测试.
密度函数理论 (DFT) 用于捕获机制的理论分析.

主要成果:

CTP-BPA具有丰富的中孔结构,含有丰富的活性位点.
实现了高平衡能力:I2的4996.5 mg/g和CH3I的621.5 mg/g.
在低度下观察到显著的动态吸收能力:I2为1052.3 mg/g,CH3I为377.8 mg/g.
该材料在1M HNO3,高达500°C和80%的相对湿度下保持其捕获效果.
DFT分析证实了位和物种之间强烈的电荷转移相互作用.

结论:

CTP-BPA在共同捕获挥发性放射性物种方面表现出色.
该材料在恶劣条件下强大的稳定性使其适合于现实世界核废物整治.
该研究提出了一个有前途的战略和先进的材料,用于安全,长期管理放射性.

关键词:

有效的捕获方式 I2 和 CH3I 的时间.低度的动态条件低度的动态条件富含的活跃区域是富含的活跃区域.基于triazine的多孔聚合物.

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