| Title: | Continuous Monitoring of Air Purification: A Study on Volatile Organic Compounds in a Gas Cell |
| Author(s): | Fathy A; Le Pivert M; Kim YJ; Ba MO; Erfan M; Sabry YM; Khalil D; Leprince-Wang Y; Bourouina T; Gnambodoe-Capochichi M; |
| Address: | "ESYCOM Lab, UMR 9007 CNRS, Universite Gustave Eiffel, ESIEE Paris, 77454 Marne-la-Vallee, France. Si-Ware Systems, 3 Khalid Ibn Al-Waleed St., Heliopolis, Cairo 11361, Egypt. Faculty of Engineering, Ain-Shams University, 1 Elsarayat St. Abbassia, Cairo 11535, Egypt" |
| ISSN/ISBN: | 1424-8220 (Electronic) 1424-8220 (Linking) |
| Abstract: | "Air pollution is one of the major environmental issues that humanity is facing. Considering Indoor Air Quality (IAQ), Volatile Organic Compounds (VOCs) are among the most harmful gases that need to be detected, but also need to be eliminated using air purification technologies. In this work, we tackle both problems simultaneously by introducing an experimental setup enabling continuous measurement of the VOCs by online absorption spectroscopy using a MEMS-based Fourier Transform infrared (FTIR) spectrometer, while those VOCs are continuously eliminated by continuous adsorption and photocatalysis, using zinc oxide nanowires (ZnO-NWs). The proposed setup enabled a preliminary study of the mechanisms involved in the purification process of acetone and toluene, taken as two different VOCs, also typical of those that can be found in tobacco smoke. Our experiments revealed very different behaviors for those two gases. An elimination ratio of 63% in 3 h was achieved for toluene, while it was only 14% for acetone under same conditions. Adsorption to the nanowires appears as the dominant mechanism for the acetone, while photocatalysis is dominant in case of the toluene" |
| Keywords: | MEMS-FTIR spectroscopy Voc ZnO nanowires array air purification process gas capturing online analysis photocatalysis; |
| Notes: | "PubMed-not-MEDLINEFathy, Alaa Le Pivert, Marie Kim, Young Jai Ba, Mame Ousmane Erfan, Mazen Sabry, Yasser M Khalil, Diaa Leprince-Wang, Yamin Bourouina, Tarik Gnambodoe-Capochichi, Martine eng ANR-16-IDEX-0003/Agence Nationale de la Recherche/ Switzerland 2020/02/14 Sensors (Basel). 2020 Feb 10; 20(3):934. doi: 10.3390/s20030934" |
