Toluene Oxidation by Photocatalytic Paint Under Different Indoor Environmental Conditions and Its Competitive Effect in the Presence of Another VOC
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10258157" target="_blank" >RIV/61989100:27710/25:10258157 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/tqem.70141" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/tqem.70141</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/tqem.70141" target="_blank" >10.1002/tqem.70141</a>
Alternative languages
Result language
angličtina
Original language name
Toluene Oxidation by Photocatalytic Paint Under Different Indoor Environmental Conditions and Its Competitive Effect in the Presence of Another VOC
Original language description
A photocatalytic paint based on carbon-doped titanium dioxide as a pigment replacement was tested for the oxidation of volatile organic compounds (VOCs) under visible-light illumination in indoor environments. The photocatalytic paint was characterized by X-ray photoelectron spectroscopy, scanning and transmission electron microscopy, and diffuse reflectance and transmittance spectral measurements. The effects of environmental conditions, including inlet concentration, relative humidity (RH), incident radiation flux, and residence time, on the degradation of toluene, an aromatic VOC, were investigated. At certain operating conditions, toluene degradation efficiency increased, from 38% to 61%, with the rise in the incident radiation flux from 6.86 to 42.34 W/m2, while it declined with increasing RH from 10% to 70%. A one-directional heterogeneous model predicted these trends, highlighting the opposing effects of incident radiation flux and humidity on toluene oxidation kinetics. In binary mixtures of toluene and acetaldehyde, representing aromatic and aliphatic VOCs, respectively, the presence of acetaldehyde had a negligible effect on toluene conversion, whereas acetaldehyde degradation was significantly reduced—by 36% and 65%—when co-fed with 3.5 and 6.5 ppmv of toluene, respectively, indicating a strong competitive effect between pollutants. This study highlights the benefit of using photocatalytic paint for indoor air decontamination and provides new insights into its performance under more realistic environmental conditions, particularly in the presence of mixed VOCs. © 2025 Elsevier B.V., All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Quality Management
ISSN
1088-1913
e-ISSN
1520-6483
Volume of the periodical
35
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
"e70141"
UT code for WoS article
001572687300013
EID of the result in the Scopus database
2-s2.0-105011494193