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High-performance filters from biomimetic wet-adhesive nanoarchitectured networks
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-08-22 , DOI: 10.1039/d0ta06886a
Hui Liu 1, 2, 3, 4, 5 , Shichao Zhang 3, 5, 6, 7 , Lifang Liu 1, 2, 3, 4, 5 , Jianyong Yu 3, 5, 6, 7 , Bin Ding 1, 2, 3, 4, 5
Affiliation  

Two-dimensional (2D) networks assembled by nanoscale fibers are attractive for the design of equipment for personal and environmental protection, but are limited by insufficient structural and performance control. We report a facile route, based on blend electrospinning/netting technology, for the preparation of a hybrid biologically inspired nanofiber network (nanofiber-net) filter with nanoscale fiber diameters (∼27 nm), a 2D stable spider-web-like structure, and mussel-mimetic wet-adhesive surfaces. Manipulating the formation and phase separation of the charged droplets ejected from a Taylor cone by controlling the mussel-mimetic adhesive molecules, enabled the generation of biomimetic nanofiber-nets on a large scale. The resulting filters show the remarkable nanostructural properties of small pore size (∼0.28 μm), high specific area, enhanced surface adhesion and wettability, high-performance applications in air filtration (>99.99% PM0.3 efficiency under >90% humidity, ∼0.13% of atmosphere pressure) and water purification (>99.9% efficiency, 453 L m−2 h−1 gravity-driven flux). This work offers an innovative design of high-performance nanofiber filters for a broad range of applications.

中文翻译:

仿生湿粘合纳米体系结构网络的高性能过滤器

由纳米级纤维组装的二维(2D)网络对于个人和环境保护设备的设计很有吸引力,但由于结构和性能控制不足而受到限制。我们报告了一种基于混合电纺/网状技术的简便路线,该路线可用于制备具有纳米级纤维直径(〜27 nm),二维稳定的蜘蛛网状结构的混合生物启发性纳米纤维网络(nanofiber-net)过滤器,和类似贻贝的湿粘合剂表面。通过控制贻贝模拟粘合剂分子来控制从泰勒锥喷射的带电液滴的形成和相分离,可以大规模产生仿生物纳米纤维网。所得的滤光片显示出显着的纳米结构特性,即小孔径(〜0.28μm),高比表面积,在> 90%的湿度,〜0.13%的大气压下)和水净化(> 99.9%的效率,453 L m -2 h -1重力驱动的通量)下的效率为0.3。这项工作为各种应用提供了高性能纳米纤维过滤器的创新设计。
更新日期:2020-09-22
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