MIL-101-SO3H:功能化MOF用于增强离子吸附和环境修复
Abouzar Tahkor1, Seyed Dariush Taherzade2,3, Niloufar Akbarzadeh1
1Department of Chemistry, University of Sistan and Baluchestan P. O. Box 98135-674 Zahedan Iran.
RSC advances
|April 29, 2025
概括
硫化金属有机框架 (MIL-101-SO3H) 有效地从废水中去除有毒的离子. 这种先进的材料表现出优越的吸附能力,为环境修复和水净化提供了有前途的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 废水中的酸 (Ba2+) 污染对环境和健康造成重大危害.
- 现有的水处理方法难以有效地去除离子.
- 金属有机框架 (MOF) 显示了吸附性污染物去除的潜力.
研究的目的:
- 调查MIL-101 (((Cr) 和其硫化衍生物MIL-101-SO3H在从污染水中去除离子方面的有效性.
- 为了优化吸附条件,包括pH值,吸附剂剂量,初始度和接触时间.
- 评估MIL-101-SO3H在复杂水矩阵中的吸附机制和性能.
主要方法:
- 合成和特征的MIL-101 ((Cr) 和MIL-101-SO3H.
- 批量吸附实验以确定在不同条件下的Ba2+去除效率.
- 吸附异温研究 (Langmuir模型),以阐明吸附机制.
- 同时存在的离子和保留试验,以评估实际适用性.
主要成果:
- 硫化显著提高了MIL-101对Ba2+的吸附能力,MIL-101-SO3H的吸附能力达到141.9毫克g-1,而MIL-101的吸附能力为54毫克g-1.
- 最佳吸附发生在pH 4时,通过MIL-101-SO3H实现Ba2+的99%的去除效率.
- 吸附遵循兰格穆尔模型,表明同质单层吸附.
- 在存在并存离子和保留试验中,MIL-101-SO3H表现出色.
结论:
- MIL-101-SO3H是一种高效的吸附剂,可以从废水中去除离子.
- 增强的吸附能力归因于硫化修饰.
- MIL-101-SO3H显示了大规模环境修复应用的巨大潜力.
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