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在EDTA功能化的MIL-101-石墨烯氧化物上Gd(III) 的吸附行为和机制

Chaoke Bulin¹, Yuelong Ma¹, Ting Guo²

¹College of Material Science And Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; Inner Mongolia Key Laboratory of Advanced Ceramic Material and Devices, Baotou 014010, China; Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources (Inner Mongolia University of Science and Technology), Ministry of Education, Baotou 014010, China.

|May 20, 2025

概括

这项研究开发了EDTA功能化的MIL-101-石墨烯氧化物,用于从二次来源有效地回收加多. 该材料实现了99.50%的回收,为稀土元素回收和环境修复提供了可持续的解决方案.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
无机化学无机化学

背景情况:

稀土元素 (REEs) 对现代技术至关重要.
二级资源为REE获取提供了一个可持续的替代方案.
为了资源利用和环境保护,需要有效的回收方法.

研究的目的:

为了合成和描述EDTA功能化的MIL-101-石墨烯氧化物 (MIL-101-GO-EDTA).
通过使用MIL-101-GO-EDTA来研究加多的吸附回收.
为了阐明Gd的吸附机制 (III) 在开发的吸附剂上.

主要方法:

准备和描述MIL-101-GO-EDTA的方法.
为Gd(III) 恢复进行批量吸附实验.
使用统计力学,异热/动力学建模和光谱分析进行吸附机制研究.

主要成果:

MIL-101-GO-EDTA在Gd(III) 恢复方面表现出高效率 (99.50%在pH9下).
最大吸附能力达到了307.69mg·g−1 (Langmuir模型).
吸附是自发的,外热的和异质的,表面化学反应是限制速度的步骤.

结论:

MIL-101-GO-EDTA是一种高效的吸附剂,用于Gd (III) 恢复.
该研究提供了关于涉及电子捐赠的原子级吸附机制的见解.
这项工作为在REE回收中使用MOF基吸附剂提供了一个参考.

关键词:

艾达达 (EDTA) 是一个叫做EDTA的语言.在Gd(III) 中.石墨烯氧化物石墨烯氧化物在MIL-101中,MIL-101是MIL-101的版本.

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