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Cited by 59TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesIndoor Air Quality and Microbial Exposure

Simultaneous photodegradation of VOC mixture by TiO2 powders

Stucchi, Marta, Galli, Federico, Bianchi, Claudia L., Pirola, Carlo, Boffito, Daria C., Biasioli, Franco, Capucci, Valentino·2018·Chemosphere
DOI 10.1016/j.chemosphere.2017.11.003
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Abstract

Volatile and semi volatile organic compounds' concentration have dramatically increased in indoor environments in recent years. UV light promotes titanium dioxide, which oxidises various molecules; however, most of the studies report the degradation of a single VOC. Here, we investigate the photo-oxidation of 17 molecules in mixture to have a realistic test of TiO 2 efficacy. We compare P25, a nanometric catalyst, and 1077, a micrometric sample, that poses less health concerns. A proton-transfer-reaction mass spectrometer measured online the concentration of all the pollutants simultaneously. Aldehydes compete for the adsorption on both the catalyst's active sites and thus they degrade 70% and 55% with P25 and 1077 respectively. Considering the single pollutant oxidation, instead, aldehydes fully oxidize. Even though benzene is recalcitrant to degradation, P25 and 1077 reduced toluene's concentration to 97% and 96% in 55 min, respectively. Acetonitrile is refractory to photocatalysis.

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Authors
Stucchi, M., Galli, F., Bianchi, C. L., Pirola, C., Boffito, D. C., Biasioli, F., & Capucci, V.
Affiliations
  • Polytechnique Montréal (CA)
  • University of Milan (IT)
Corresponding author
Galli, Federico
ORCID
Venue
Chemosphere
Publisher
Elsevier BV
Published
2018-02
Volume
193
Pages
198-206
ISSN
0045-6535 (ISSN-L)
DOI
10.1016/j.chemosphere.2017.11.003
OpenAlex
W2765841961
Cited by
59
References
0
Citations by year
2026: 2 · 2025: 1 · 2024: 9 · 2023: 5 · 2022: 8 · 2021: 11 · 2020: 8 · 2019: 14 · 2018: 1
FWCI
1.69
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutional Research Information System (Fondazione Edmund Mach) (submittedVersion)
  • PolyPublie (École Polytechnique de Montréal) (submittedVersion)
Funders
  • Canada Research Chairs
  • Natural Sciences and Engineering Research Council of Canada
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
Keywords
photodegradation, volatile organic compounds, titanium dioxide, photocatalysis, ultraviolet radiation, indoor air pollution, aldehydes, benzene, toluene, acetonitrile, competitive adsorption, p25, proton transfer reaction mass spectrometry
MeSH terms
Adsorption, Air Pollutants, Aldehydes, Benzene, Catalysis, Models, Chemical, Oxidation-Reduction, Photolysis, Titanium, Toluene, Ultraviolet Rays, Volatile Organic Compounds, Photochemical Processes

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