DataVXACS Applied Materials & InterfacesPaper
journal article·2022-08-17

Biomimetic Fibrous Leaf-Vein Membrane Enabling Unidirectional Water Penetration and Effective Antibacterial PM Filtration

Ting Dong, Yue Hua, Guangting Han, Yuanming Zhang, Shan Chi, Yanming Liu, Cui Liu, Ching-Wen Lou, Jia-Horng Lin

ACS Applied Materials & Interfaces· Volume 14· Issue 32
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Source abstract

Abstract

Air pollution induced by pathogenic particulate matter (PM) has posed a serious threat to public health worldwide. Advanced air filters are thus required, not only exhibiting high PM capture efficiency, low breathing resistance, and high internal moisture transferring performance but also isolating and inactivating external pathogenic aerosols. In this study, we demonstrated a facile approach to construct a biomimetic fibrous leaf-vein membrane with unidirectional water penetration and effective antibacterial PM filtration by one-step electrospinning of poly(vinylidene fluoride) (PVDF)-based multilayer nanofibers. With ultrathin fibers penetrating the skeletal framework of bimodal thick fibers, the membranes showed gradient interconnected porous structures and achieved a highly efficient and stable (in an acid and alkali environment) PM0.3 interception (>99.98%) with low air drag (51–71 Pa). In addition, the gradient narrow pores of the membranes contributed to a gradient higher hydrophilicity. The subsequent unidirectional water motion effectively isolates pathogenic aerosols typically generated by external individuals or ultrafast water penetration from the inverse face. Moreover, the membranes demonstrated an antibacterial efficacy (>99.99%) in a 5 min contact, inactivating the intercepted airborne pathogens efficiently. The test results proved that the proposed membranes were promising advanced air filters for respirator applications.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Electrospun Nanofibers in Biomedical Applications · Wound Healing and Treatments · Solar-Powered Water Purification Methods

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Textile and Clothing, Qingdao University, #308, Ningxia Road, Qingdao 266071, P. R. China

Advanced Medical Care and Protection Technology Research Center, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China

Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, #308 Ningxia Road, Qingdao 266071, P. R. China

Bestee Material Co., Ltd., Qingdao, Shandong 266001, P. R. China

Sinotech Academy of Textile Co., Ltd., Qingdao, Shandong 266001, P. R. China

Qingdao Byherb New Material Co., Ltd., Qingdao, Shandong 266001, P. R. China

Department of Bioinformatics and Medical Engineering, Asia University, Taichung City 413305, Taiwan

Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 404333, Taiwan

Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, P. R. China

Advanced Medical Care and Protection Technology Research Center, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 407102, Taiwan

Funding

State Key Laboratory of Bio-Fibers and Eco-Textiles · Natural Science Foundation of Shandong Province · Qingdao Shinan District Science and technology planning project

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