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生物基因衍生的共价有机框架:推进具有高吸附能力的PFAS去除技术

Amin Zadehnazari¹, Ahmadreza Khosropour¹, Amin Zarei¹

¹Department of Food Science, College of Agricultural and Life Sciences, Cornell University, Stocking Hall, Ithaca, NY, 14853, USA.

Small (Weinheim an der Bergstrasse, Germany)

|August 8, 2024

概括

新的纳米圈有效地从饮用水中去除有害的和多基物质 (PFAS). 这些新型材料具有高容量和快速吸附,为净化水提供了有前途的解决方案.

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:

饮用水中的和多基物质 (PFAS) 污染是一个日益严重的环境和公共卫生问题.
迫切需要各种PFAS化合物的有效和高效的去除技术.

研究的目的:

合成新的共价有机框架 (COF) 纳米球,以有效地从水中去除阳离子PFAS.
为了研究这些COF对多种PFAS污染物的吸附能力,动力学和去除效率.

主要方法:

基于viologen的共价有机框架纳米球的合成:MELEM-COF和MEL-COF.
纳米层形态和结晶性的表征.
吸附实验,以评估六种阳离子PFAS化合物的PFAS去除效率和能力.

主要成果:

在30分钟内,MEL和MELEM-COF显示了离子PFAS的高去除效率 (90.0-99.0%).
MELEM-COF具有2500mgg-1的异常吸附能力,超过了之前报告的COF.
观察到快速吸附动力学,在30分钟内达到平衡.

结论:

基于viologen的COF纳米球对于同时去除多种阳离子PFAS化合物非常有效.
通过静电和双极相互作用,MELEM-COF的阴离子表面和形态学有助于其卓越的吸附性能.
这些发现为开发用于水资源整治的先进COF基材料提供了有前途的战略.

关键词:

在PFAS中,有很多方法.吸附机制是一种吸附机制.协价有机框架协价有机框架微孔材料是一种微孔的材料.

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