用硫增强的富含的聚合物,用于超快速吸附贵金属
Hao Li1, Erpan Qi1, Ziwei Ding1
1Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China.
Journal of colloid and interface science
|December 17, 2025
概括
我们开发了含硫吸附剂,以高效地回收贵金属. 该TPA@PEI吸附剂显示高容量和超快的金和动力学,证明了硫.
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:
- 对贵金属 (PMs) 的需求不断增长,需要有效地从二次资源中回收.
- 开发高性能吸附剂对于有效的贵金属回收至关重要.
- 基于聚乙烯胺 (PEI) 的材料具有金属离子吸附的潜力.
研究的目的:
- 设计和合成用于选择性回收黄金 (Au(III)) 和 (Pd(II)) 的新型吸附剂.
- 调查硫添加在增强吸附剂性能方面的作用.
- 评估开发材料的吸附能力,动力学,选择性和可重复使用性.
主要方法:
- 通过交叉链接PEI.合成两个吸附剂:TPA@PEI (含硫) 和SA@PEI (无硫).
- 吸附性能的表征,包括容量,动力学和选择性研究.
- 利用比较测试,理论模拟和四级离子混合物进行分析.
主要成果:
- TPA@PEI表现出异常的吸附能力:在pH值为3.3时,Au (III) 的吸附能力为2319.34毫克/克,Pd (II) 的吸附能力为572.81毫克/克.
- TPA@PEI表现出超快的吸附动力学,对于Au(III) 和Pd(II) 均在0.5分钟内达到平衡.
- 由于添加了硫,TPA@PEI显示出更高的选择性 (>99%的回收率) 和更好的性能指标.
结论:
- 含硫吸附剂,如TPA@PEI,显著提高贵金属回收效率.
- 该研究强调了硫在优化离子选择性,吸附能力和动力学方面的关键作用.
- 介绍了可持续的贵金属回收利用的实用吸附剂平台,并阐明了硫的功能重要性.
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