Carbon nanotubes / activated carbon fiber based air filter media for simultaneous removal of particulate matter and ozone. (15th November 2017)

• Record Type: Journal Article
• Authors: Yang, Shen; Zhu, Zhenxing; Wei, Fei; Yang, Xudong
• Is Part Of: Building and environment. Volume 125(2017)
• Page Start: 60
• Page End: 66
• Publication Date: 2017-11-15
• Subjects: Particulate matter -- Ozone -- Carbon nanotubes -- Activated carbon fiber -- Air cleaning; Buildings -- Environmental engineering -- Periodicals; Building -- Research -- Periodicals; Constructions -- Technique de l'environnement -- Périodiques; Electronic journals; 696
• DOI: 10.1016/j.buildenv.2017.08.040
• Languages: English
• ISSNs: 0360-1323

Abstract

Abstract: Indoor environment is faced with complex pollution by particulate matter (PM) and ozone. In this study, we proposed to use carbon nanotubes/activated carbon fiber (CNTs/ACF) to remove both PM and ozone with high removal efficiencies, high quality factor and low pressure resistance. The CNTs/ACF filter media were fabricated through growth of CNTs upon pristine ACF using chemical vapor deposition method. The PM filtration efficiencies of the CNTs/ACF and pristine ACF were measured for different particle sizes. The quality factors of these two media were calculated and compared. The ozone removal efficiency of the CNTs/ACF and ACF were tested as well. Results indicate that growth of CNTs on ACF elevated the media for PM filtration, and increased the quality factor by 48%. The CNTs/ACF presented >99% ozone removal, as high as the ACF. Compared with other CNTs-based filter media that have been proposed in previous studies, the CNTs/ACF exhibited higher quality factor, much lower pressure resistance, higher ozone removal efficiency, and upper-middle PM filtration efficiency. Highlights: A filter medium was obtained by carbon nanotubes on activated carbon fiber. The filter medium could remove particulate matter at the H11 level. The filter medium presented >99% ozone removal efficiency. The quality factor of the material was higher than other CNTs-based filter media.