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Highly Efficient,Dual‑Functional Self‑Assembled Electrospun Nanofiber Filters for Simultaneous pm removal and On‑Site Eye‑Readable Formaldehyde Sensing

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Advanced Fiber Materials 2023年第3期5卷 1088-1103页

作者： Jin Yeong Song Seongmin Kim Jaeseong Park Sang Min Park School of Mechanical Engineering Pusan National University63‑2 Busan University‑RoGeumjeong‑GuBusan 46241South Korea

Air pollution containing particulate matter(pm)and volatile organic compounds has caused magnificent burdens on indi-vidual health and global *** advances in highly efficient or multifunctional nanofiber filters have been achieved,many existing filters can only deal with one type of air pollutant,such as capturing pm or absorbing and detecting toxic ***,highly efficient,dual-functional,self-assembled electrospun nanofiber(SAEN)filters were developed for simultaneous pm removal and onsite eye-readable formaldehyde sensing fabricated on a commercial fabric *** the use of an electrolyte solution containing a formaldehyde-sensitive colorimetric agent as a collector during electrospinning,the one-step fabrication of the dual-functional SAEN filter on commercial masks,such as a fabric mask and a daily dispos-able mask,was *** electrolyte solution also allowed the uniform deposition of electrospun nanofibers,thereby achieving the high efficiency of pm filtration with an increased quality factor up to twice that of commercial *** SAEN filter enabled onsite and eye-readable formaldehyde gas detection by changing its color from yellow to red under a 5 ppm concentrated formaldehyde gas *** repetitive fabrication and detachment of the SAEN filter on a fabric mask minimized the waste of the mask while maintaining high filtration efficiency by replenishing the SAEN filters and reusing the fabric *** the dual functionality of SAEN filters,this process could provide new insights into design-ing and developing high performance and dual-functional electrospun nanofiber filters for various applications,including individual protection and indoor purification applications.

关键词： Electrospinning Nanofiber Self-assembly pm removal Formaldehyde sensing

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