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采用多多巴胺表面功能化的Zwitterionic MOF嵌入式酸盐珠,以有效地去除多西环素:优化和机制研究

Mohammed Salah Ayoup¹, Abdelazeem S Eltaweil², Ahmed M Omer³

¹Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia; Department of Chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt.

International journal of biological macromolecules

|October 5, 2024

概括

一种新的zwitter吸附剂,ZIF-67/MIL-88A@Alg@PDA,通过克服静电排斥,有效地去除多西环林 (DOX). 这种吸附剂在从水中去除抗生素方面表现出高效和耐久性.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

像多克西环素 (DOX) 这样的两抗生素由于吸附剂的静电排斥而带来了去除的挑战.
开发有效的吸附剂对于减轻水生环境中制药污染至关重要.

研究的目的:

制造一种能够克服静电排斥的zwitter吸附剂,以提高多西环素的去除能力.
研究新型吸附剂的吸附性能,机制和耐久性.

主要方法:

使用二元MOF和酸盐矩阵制造一个zwitter吸附剂 (ZIF-67/MIL-88A@Alg@PDA),经过多多巴胺修饰.
批量吸附实验以评估DOX去除功效,等温和运动分析.
使用XPS和Zeta潜力的表征,以及耐用性和浸出测试.

主要成果:

在中性pH和25°C时,DOX的超高吸附能力为384.61 mg/g.
确定了一种物理吸收和化学吸收机制的组合,驱动DOX吸附.
经过证明的吸附剂耐用性与最小的容量下降 (12.22 mg/g) 和低金属浸出 (Co: 0.008 mg/L,Fe: 0.098 mg/L).
展示了增强的DOX去除 (83.51%至93.50%) 与增加的离子强度.

结论:

开发的ZIF-67/MIL-88A@Alg@PDA吸附剂有效地克服了电静电排斥,以消除两抗生素.
这项研究提出了一个可行的策略,用于设计zwitter吸收剂,以有效地去除充电污染物.
这些发现为废水处理应用提供了一个简单而有效的程序.

关键词:

酸的修饰方法是酸.静电相互作用静电相互作用机理机制机理机制金属的洗过程中,金属的洗过程中在Zwitter MOF中使用.

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