In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers

Zhang, Rufan; Liu, Bofei; Yang, Ankun; Zhu, Yangying; Liu, Chong; Zhou, Guangmin; Sun, Jie; Hsu, Po-Chun; Zhao, Wenting; Lin, Dingchang; Liu, Yayuan; Pei, Allen; Xie, Jin; Chen, Wei; Xu, Jinwei; Jin, Yang; Wu, Tong; Huang, Xuanyi; Cui, Yi

doi:10.1021/acs.nanolett.7b04673

Title: In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers

Journal Article · Wed Jan 03 00:00:00 EST 2018 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.7b04673· OSTI ID:1471524

^[1]; Liu, Bofei ^[1];

^[1]; Zhu, Yangying ^[1]; Liu, Chong ^[1]; Zhou, Guangmin ^[1]; Sun, Jie ^[1]; Hsu, Po-Chun ^[1]; Zhao, Wenting ^[1];

^[1]; Liu, Yayuan ^[1];

^[1];

^[1]; Xu, Jinwei ^[1]; Jin, Yang ^[1]; Wu, Tong ^[1]; Huang, Xuanyi ^[1];

^[2]

Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
Stanford Univ., CA (United States). Dept. of Materials Science and Engineering; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Inst. for Materials and Energy Sciences

Aerosol-induced haze problem has become a serious environmental concern. Filtration is widely applied to remove aerosols from gas streams. Despite classical filtration theories, the nanoscale capture and evolution of aerosols is not yet clearly understood. In this paper, we report an in situ investigation on the nanoscale capture and evolution of aerosols on polyimide nanofibers. We discovered different capture and evolution behaviors among three types of aerosols: wetting liquid droplets, nonwetting liquid droplets, and solid particles. The wetting droplets had small contact angles and could move, coalesce, and form axisymmetric conformations on polyimide nanofibers. In contrast, the nonwetting droplets had a large contact angle on polyimide nanofibers and formed nonaxisymmetric conformations. Different from the liquid droplets, the solid particles could not move along the nanofibers and formed dendritic structures. Finally, this study provides an important insight for obtaining a deep understanding of the nanoscale capture and evolution of aerosols and benefits future design and development of advanced filters.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Stanford Univ., CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1471524

Journal Information:: Nano Letters, Vol. 18, Issue 2; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 55 works

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