通过醇功能化有缺陷的Zr-MOF增强去除重金属离子的多联体策略
Yu Zhou1, Jiaxing Xiong1, Li Wang2
1Research Center of Lake Restoration Technology Engineering for Universities of Yunnan Province, School of Chemical Science and Technology, Yunnan University, No. 2, Cuihu North Road, Kunming 650091, China.
Journal of hazardous materials
|September 7, 2024
概括
一种新型的醇功能化缺陷材料,Zr-MSA-DMSA,有效地从废水中去除诸如,和等重金属. 这种吸附剂具有很高的容量和稳定性,为环境修复提供了一个有希望的解决方案.
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:
- 重金属污染对全球环境构成重大威胁.
- 开发高效的吸附剂来从废水中去除重金属至关重要.
研究的目的:
- 为了设计和合成一种醇功能化的缺陷材料,Zr-MSA-DMSA.
- 评估其在废水中去除重金属 (Pb (II),Hg (II),Cd (II)) 的效率.
主要方法:
- 合成Zr-MSA-DMSA通过混合2,3-二元酸和酸.
- 吸附实验以确定吸附能力和去除效率.
- 谱分析和密度函数理论 (DFT) 计算以阐明吸附机制.
- 固定床实验用于评估连续流系统中的性能.
主要成果:
- Zr-MSA-DMSA表现出高的最大吸附能力:Pb (II) 的715.2毫克g−1,Hg (II) 的862.7毫克g−1和Cd (II) 的450.5毫克g−1.
- 在实际废水中达到高达97%的M(II) 清除效率,具有出色的抗干扰能力.
- 在5个吸附/再生周期中保持结构稳定.
- DFT的计算和光谱分析证实了通过硫/氧协调,静电吸引和缺陷部位的吸附.
结论:
- Zr-MSA-DMSA在废水中去除重金属方面表现出色.
- 材料的缺陷工程,包括氧气空隙和不和部位,增强吸附.
- 在重金属废水处理和缺陷工程中展示了实际应用的潜力.
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