Air Filtration in the Free Molecular Flow Regime: A Review of High-Efficiency Particulate Air Filters Based on Carbon Nanotubes

• Published in: Small (Weinheim an der Bergstrasse, Germany) Vol. 10; no. 22; pp. 4543 - 4561
• Main Authors: Li, Peng, Wang, Chunya, Zhang, Yingying, Wei, Fei
• Format: Journal Article
• Language: English
• Published: Germany Blackwell Publishing Ltd 01.11.2014; Wiley Subscription Services, Inc
• Subjects: Air filters; air filtration; Carbon nanotubes; Efficiency; Filtration; Free molecular flow; free molecular flow regime; Indoor air quality; Mean free path; Molecular structure; Nanostructure; Nanotechnology; particulates; Pressure drop; air filtration; free molecular flow regime; air filters; carbon nanotubes; particulates

Air filtration in the free molecular flow (FMF) regime is important and challenging because a higher filtration efficiency and lower pressure drop are obtained when the fiber diameter is smaller than the gas mean free path in the FMF regime. In previous studies, FMF conditions have been obtained by...