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防水纤维素纳米纤维基气凝用于高效油水分离

Zixuan Wu¹, Shuzhen Shu¹, Xiaolei Hu¹

¹State Key Laboratory for Pollution Control, School of Environmental Science and Engineering, Shanghai Institute of Pollution Control and Ecological Security, Tongji University, 1239 Siping Road, Shanghai 200092, China.

International journal of biological macromolecules

|February 21, 2025

概括

这项研究开发了先进的纳米纤维素气凝以吸收油脂. TCNF-PEI气凝显示出卓越的去油能力和可重复使用性,使其成为石油泄漏清理的理想选择.

科学领域:

材料科学材料科学材料科学
环境科学环境科学

背景情况:

疏水性气凝对油脂吸收有效.
纳米纤维素 (NC) 为吸收材料提供了一个可持续的基础.

研究的目的:

制造和评估基于纳米纤维素的新型疏水性气凝,以提高脱油效果.
研究纳米纤维素功能化和交叉连接剂选择对气凝性能的影响.

主要方法:

制造四种类型的NC气凝,使用冷干燥和甲基trimethoxysilane (MTMS) 表面修饰.
调纳米纤维素 (纤维素纳米纤维 (CNF) 和TEMPO氧化纤维素纳米纤维素 (TCNF)) 和交叉连接剂 (聚乙烯胺 (PEI) 和酸 (TA)).
使用SEM,FTIR和XRD进行表征;评估油的吸收能力,动力学,可重复使用性和适用于各种油和溶剂.

主要成果:

TCNF-PEI气凝展示了一个具有高孔隙性的层次的3D支架.
TCNF-PEI具有最高的吸收能力 (112.30g/g),显著超过其他配方.
气凝显示出出色的可重复使用性 (在五个循环后保持超过74%的容量) 和广泛适用于油和有机溶剂.

结论:

由于其结构和特性,TCNF-PEI气凝是一种高度有效的吸油材料.
这种气凝显示出在海上和港口环境中紧急油污回收的巨大潜力.
该研究强调了材料设计在开发高效的环境修复解决方案方面的重要性.

关键词:

吸收方式吸收方式气凝是一种气凝.纳米纤维素的使用方法油油油油油废水是废水,废水就是废水.

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