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酸盐功能化分层双氧化物装饰木材气凝,以有效地回收La (III)
Jingbo Sun1, Xudong Zheng1, Youming Zhu1
1School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|October 4, 2025
概括
研究人员开发了一种新型的木材气凝,经过化层状双氧化物 (P-LDH/WA) 改性,用于高效的稀土元素回收. 这种P-LDH/WA材料显示了从二次资源中提取的高容量和可重复使用性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 循环经济原则需要有效地从二次资源中回收像兰他这样的有价值元素.
- 传统的粉末吸附剂面临的挑战包括聚合和难以分离,阻碍了实际应用.
- 开发具有增强吸附性质和可回收性的先进材料对于可持续的资源管理至关重要.
研究的目的:
- 为了合成和表征一种新型吸附材料,以有效地回收兰.
- 研究开发材料的吸附机制,性能和可重复使用性.
- 为了克服传统吸附剂在稀土元素回收方面的局限性.
主要方法:
- 化层状双氧化物 (P-LDH) 被制备并固定在脱木气凝 (WA) 基质上,形成P-LDH/WA.
- 在各种条件下 (pH,温度) 研究了P-LDH/WA对La(III的吸附行为.
- 分析了吸附动力学,同热量和热力学,以阐明吸附机制和容量.
主要成果:
- 这种P-LDH/WA吸附剂的最大La(III) 吸附能力为58.26毫克g-1,明显高于未经修改的WA (22.10毫克g-1).
- 吸附过程遵循伪二次动力学和兰木尔异热模型,表明化学吸附.
- 该材料在3个再生周期后保持了81.3%的吸附效率,显示出出色的可重复使用性和稳定性.
结论:
- P-LDH/WA是一种高效,可重复使用的吸附剂,用于从二次资源中回收兰,符合循环经济目标.
- WA的层次性多孔结构与P-LDH相结合,提供了卓越的吸附性能和易于分离.
- 开发的材料为可持续的稀土元素回收提供了一个有希望的解决方案,克服了传统吸附剂的局限性.
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