skip to main content

DOE PAGESDOE PAGES

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

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:
ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [1] ;  [1] ; ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [2]
  1. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
  2. 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:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 18; Journal Issue: 2; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; aerosol; capture; filtration; in situ; nanofibers; PM2.5
OSTI Identifier:
1471524

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., 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. 2018. "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},
number = 2,
volume = 18,
place = {United States},
year = {2018},
month = {1}
}