使用丝纤维素/MOF-2/酸盐复合物的高效Hg2+吸附:动力学和热力学
Asaad F Hassan1, Ahmed Elhassanein2, Walaa A Shaltout3
1Department of Chemistry, Faculty of Science, Damanhour University, Damanhour, Egypt.
International journal of biological macromolecules
|January 5, 2025
概括
一种新型复合材料有效地从水中去除离子 (Hg2+). 这种丝纤维素粉/金属有机框架/酸复合物 (ZSG) 显示出高吸附能力和重金属修复的可重复使用性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术 纳米技术
背景情况:
- (Hg2+) 是一种有毒的重金属污染物.
- 需要有效和可重复使用的吸附剂来去除.
研究的目的:
- 合成和描述一种用于Hg2+去除的新型复合吸附剂.
- 与单个组件相比,评估复合材料的吸附性能.
- 研究吸附机制和影响因素.
主要方法:
- 藻酸盐 (CG),金属有机框架 (MOF-2) 和丝纤维素粉末 (SF) 复合物 (ZSG) 的合成和表征.
- 使用诸如表面积分析,毛孔大小分析,膨胀比率和零电荷pH (pHPZC) 等技术进行物理化学表征.
- 吸附实验以确定Hg2+吸附能力,动力学和热力学,将数据与兰迈尔,伪二阶,埃洛维奇和范特霍夫模型相匹配.
主要成果:
- 该ZSG复合材料表现出优异的物理化学性能,包括298.6 m2/g的表面积和35.91 Å的孔径半径.
- ZSG最大的Hg2+吸附能力为453.67 mg/g,明显高于单个成分.
- 吸附遵循伪二次动力学,是内热,物理和自发的,总溶解的固体对容量产生负面影响.
结论:
- 开发的ZSG复合物是一种高效且可重复使用的吸收剂,用于去除离子.
- 该研究提供了对吸附机制和废水处理中的潜在应用的见解.
- 这种复合材料对重金属污染的环境补救有希望.
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