使用现场准备的Cu0@ACF吸附剂从溶液中高效地去除放射性
Liang Jiang1, Xiaojiang Chen2, Jun Liao1
1Caea Innovation Center of Nuclear Environmental Safety Technology, Southwest University of Science and Technology, Mianyang 621010, China.
The Science of the total environment
|August 19, 2025
概括
一种新的纳米零价值铜改性活性碳纤维 (Cu0@ACF) 复合物有效地去除放射性物种. 这种吸附剂显示了核废水处理的高容量和潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术 纳米技术
背景情况:
- 在核事故发生后,放射性的去除对环境保护和人类健康至关重要.
- 现有的吸附剂往往缺乏有效的放射性整治所需的效率和容量.
研究的目的:
- 合成和评估一种新的纳米零价值铜改性活性碳纤维 (Cu0@ACF) 复合物,用于去除放射性.
- 调查Cu0@ACF对分子 (I2) 和离子 (I-) 的吸附性能和机制.
主要方法:
- 在Cu0@ACF复合材料的现场自我减少合成.
- 使用X射线衍射 (XRD),X射线光电子光谱 (XPS) 和能量分散光谱 (EDS) 的表征.
- 批量吸附实验用于研究各种参数 (修饰剂度,接触时间,pH,干扰离子) 对去除的影响.
主要成果:
- 该Cu0@ACF复合材料表现出高吸附能力:I2的980 mg/g和I-的358 mg/g.
- 吸附动力学遵循伪二次动力学,异热量数据符合兰迈尔模型,表明单层化学吸附.
- 主要吸附机制涉及化离子和纳米铜之间的化学相互作用,通过极性共价键形成CuI.
结论:
- 与其他吸附剂相比,Cu0@ACF在去除放射性方面表现出优越的性能.
- 该研究提出了一种开发高性能活性碳纤维基吸附剂的简单策略,用于核废水处理.
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