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多功能细菌纤维素/共有机框架复合膜,具有抗和抗菌特性,用于染料分离

Guomeng Zhang^1,2, Guangkai Chen^1,2, Mei Dong³

¹State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.

ACS applied materials & interfaces

|June 28, 2023

概括

这项研究引入了一种新的细菌纤维素/共价有机框架复合膜,用于高效的废水处理. 膜表现出高染料排斥,优良的稳定性和显著的抗菌特性,扩大了COF材料的使用范围.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
纳米技术纳米技术

背景情况:

联有机框架 (COF) 对废水处理具有前景,但由于不可溶性,将其加工成膜具有挑战性.
高温和高压合成方法导致无法加工的COF粉末,阻碍了膜制造.

研究的目的:

使用细菌纤维素 (BC) 和基于氨酸的COF开发一个连续且无缺陷的复合膜.
为了评估膜在染料去除,稳定性,抗和抗菌活性中的性能,用于水处理应用.

主要方法:

通过将细菌纤维素 (BC) 与基于氨酸的共价有机框架 (COF) 结合而制造复合膜.
利用BC和COF之间独特的结构性质和键相互作用来形成膜.
经过测试的染料排斥 (甲基绿色,刚果红色),透性,在各种条件下的稳定性,抗污染和抗菌功效.

主要成果:

在甲基绿色和刚果红色的染料排斥率达到了99%,通透度为195 L m-2 h-1 bar-1.1.
在不同的pH值,长时间的过和循环条件下表现出极好的稳定性.
呈现出显著的抗物特性 (93.72%的流回收率) 和强烈的抗菌活性,在可见光下将*Escherichia coli*和*Staphylococcus aureus*的生存率降至<1%.

结论:

开发的自支持BC/COF复合膜提供了卓越的染料分离,抗和抗菌性能.
这一战略有效地克服了COF的加工挑战,大大扩大了它们在先进水处理中的应用潜力.
复合膜代表了有效和可持续的废水净化有前途的解决方案.

关键词:

抗和抗菌性能抗和抗菌性能细菌纤维素的细菌纤维素.复合膜是复合膜的一种.共价有机框架是共价有机框架.染料分离器染料分离器

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