In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers
Abstract
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.
- Authors:
-
[1];
[1];
[1];
[1];
[1];
[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
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1471524
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Nano Letters
- Additional Journal Information:
- Journal Volume: 18; Journal Issue: 2; Journal ID: ISSN 1530-6984
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; aerosol; capture; filtration; in situ; nanofibers; PM2.5
Citation Formats
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, and Cui, Yi. In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers. United States: N. p., 2018.
Web. doi:10.1021/acs.nanolett.7b04673.
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. In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers. United States. doi:10.1021/acs.nanolett.7b04673.
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, and Cui, Yi. Wed .
"In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers". United States. doi:10.1021/acs.nanolett.7b04673. https://www.osti.gov/servlets/purl/1471524.
@article{osti_1471524,
title = {In Situ Investigation on the Nanoscale Capture and Evolution of Aerosols on Nanofibers},
author = {Zhang, Rufan and Liu, Bofei and Yang, Ankun and Zhu, Yangying and Liu, Chong and Zhou, Guangmin and Sun, Jie and Hsu, Po-Chun and Zhao, Wenting and Lin, Dingchang and Liu, Yayuan and Pei, Allen and Xie, Jin and Chen, Wei and Xu, Jinwei and Jin, Yang and Wu, Tong and Huang, Xuanyi and Cui, Yi},
abstractNote = {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.},
doi = {10.1021/acs.nanolett.7b04673},
journal = {Nano Letters},
issn = {1530-6984},
number = 2,
volume = 18,
place = {United States},
year = {2018},
month = {1}
}
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Figures / Tables:
Figure 1: Schematic illustration of the in situ investigation on the nanoscale capture and evolution of aerosols on polyimide nanofibers and the typical images of different types of aerosols. (a) Illustration of the experimental setup. (b-d) Images of the in situ capture of (b) wetting droplets, (c) nonwetting droplets, andmore »
Figures / Tables found in this record: