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Open AccessArticle

Filtration of Sub-3.3 nm Tungsten Oxide Particles Using Nanofibrous Filters

1
Department of Mechanical & Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
2
Tsinghua University—University of Waterloo Joint Research Centre for Micro/Nano Energy & Environment Technology, Tsinghua University, Beijing 100084, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(8), 1277; https://doi.org/10.3390/ma11081277
Received: 27 June 2018 / Revised: 22 July 2018 / Accepted: 23 July 2018 / Published: 25 July 2018
(This article belongs to the Special Issue Micro/Nano Materials for Clean Energy and Environment)
This work aims to understand the effects of particle concentration on the filtration of nanoparticles using nanofibrous filters. The filtration efficiencies of triple modal tungsten oxide (WOx) nanoparticles were experimentally determined at three different concentrations for the size range of 0.82–3.3 nm in diameter. All tests were conducted using polyvinyl alcohol (PVA) nano-fibrous filters at an air relative humidity of 2.9%. Results showed that the filtration efficiencies of sub-3.3 nm nanoparticles depended on the upstream particle concentration. The lower the particle concentration was, the higher the filtration efficiency was. View Full-Text
Keywords: air filtration; airborne nanoparticle; particle concentration; nanofibers air filtration; airborne nanoparticle; particle concentration; nanofibers
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MDPI and ACS Style

Givehchi, R.; Li, Q.; Tan, Z. Filtration of Sub-3.3 nm Tungsten Oxide Particles Using Nanofibrous Filters. Materials 2018, 11, 1277.

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