在聚偏二氟乙烯纤维上喷涂制作 ZIF-8/PVA 膜,用于高效分离水包油型乳液

IF 8.3 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Fuqiang Fan, Lin Zhao, Yan Guo, Hang Xu, Tieqiang Wang, Yu Fu
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引用次数: 0

摘要

在人类生活和生产中,含有洗涤剂的含油废水大量产生和排放,造成了严重的环境污染和水资源问题。基于金属有机框架(MOF)的膜是一种经济环保的乳液分离工具,但受制于复杂的制备工艺和较差的灵活性。在此,我们开发了一种通过喷雾合成基于 MOF 的混合基质膜(MMM)的简单方法,并通过后沉积和原位生长方式在聚(偏氟乙烯)(PVDF)纤维上制备了该膜。制备的 ZIF-8/PVA MMM 在 PVDF 纤维上均匀分布着 ZIF-8 颗粒和聚(乙烯醇)(PVA)。PVA 改善了 ZIF-8 颗粒之间以及 MOF 层与 PVDF 纤维之间的粘附性,使分离膜具有很高的柔韧性和可弯曲性。制备的 ZIF-8/PVA 膜具有亲水性和水下超疏水性,对乳液、含染料乳液和表面活性剂稳定乳液具有较高的分离效率和较大的水通量。此外,制备的 ZIF-8/PVA/PVDF 纤维具有良好的防污性能和柔韧性,在多次工作甚至弯曲后仍能保持稳定的分离效率,这表明 ZIF-8/PVA/PVDF 纤维具有良好的稳定性和实际应用潜力。这项工作为基于 MOF 的 MMM 的合成和应用开辟了一条新途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Fabrication of a ZIF-8/PVA Membrane on PVDF Fiber by Spray for the Highly Efficient Separation of Oil-in-Water Emulsions

Fabrication of a ZIF-8/PVA Membrane on PVDF Fiber by Spray for the Highly Efficient Separation of Oil-in-Water Emulsions
In human life and production, excessive oily wastewaters containing detergents are produced and discharged, causing severe environmental pollution and water resource problems. A metal–organic framework (MOF)-based membrane is an economical and environmentally friendly tool for emulsion separation but is limited by a complex preparation process and poor flexibility. Herein, we developed a simple method to synthesize a MOF-based mixed-matrix membrane (MMM) by spray and fabricated the membrane on poly(vinylidene fluoride) (PVDF) fibers via postdeposition and in situ growth manners. The prepared ZIF-8/PVA MMMs have uniform distribution of ZIF-8 particles and poly(vinyl alcohol) (PVA) on the PVDF fibers. PVA improved the adhesion between the ZIF-8 particles and between the MOF layer and PVDF fiber, endowing the separation membrane with high flexibility and bendability. The prepared ZIF-8/PVA membrane exhibited hydrophilicity and underwater superoleophobicity, which showed high separation efficiency and considerable water flux for emulsions, emulsion containing dye, and surfactant-stabilized emulsion. In addition, the fabricated ZIF-8/PVA/PVDF fibers exhibited good antifouling property and flexibility and can maintain stable separation efficiency after working several times and even under bending, demonstrating the stability and potentiality of the ZIF-8/PVA/PVDF fibers in practical applications. This work paves a new avenue for the synthesis and application of MOF-based MMMs.
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来源期刊
ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces 工程技术-材料科学:综合
CiteScore
16.00
自引率
6.30%
发文量
4978
审稿时长
1.8 months
期刊介绍: ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.
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