Metal-Doped TiO2 Optical Fiber Textiles for Concurrent Removal of Airborne Bacteria and Volatile Organic Compounds
Abstract
This study focuses on the application of photocatalysis for air pollution, targeting both chemical and biological contaminants. The selected target compounds were 3-methylbutan-1-ol (C5H12O), a volatile organic compound abundantly generated in the food industry, and Escherichia coli, representing a relevant bacterial indicator commonly encountered in such industrial environments and effectively embodying a biological threat. In this work, a series of experiments was conducted in a batch reactor using a novel TiO2-based photocatalytic system integrating metal wires, namely copper (Cu) and silver (Ag), woven into an optical fiber support. A comparative evaluation of photocatalytic performance across different media was carried out for the removal of 3-methylbutan-1-ol, as well as for E. coli deactivation. The results demonstrated notable performance of the TiO2-Cu medium for chemical treatment, achieving 97% removal efficiency after 85 min at an inlet concentration of 28 mg·m−3. Similarly, significant antibacterial activity was observed with 5.50 log reduction in colony-forming units (CFU) after 2.5 h. The photocatalytic performance of TiO2-Cu supports was further validated under different operating conditions, including relative humidity levels ranging from 20% to 60% and concentration range from 5–30 mg·m−3. Finally, this study also includes a comparison between the TiO2-Cu support and conventional photocatalytic systems based on TiO2, particularly for simultaneous (combined) treatment of chemical and biological contaminants, with promising and encouraging outcomes.
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BibTeX
@article{assadi2026metaldoped,
title = {{Metal-Doped TiO2 Optical Fiber Textiles for Concurrent Removal of Airborne Bacteria and Volatile Organic Compounds}},
author = {Aymen Amine Assadi and Youcef Serhane and Mohammod Hafizur Rahman and Mohamed Aziz Hajjaji and Abdelkrim Bouzaza and Hichem Tahraoui and Jie Zhang and Abdeltif Amrane},
journal = {Catalysts},
year = {2026},
month = may,
doi = {10.3390/catal16050465},
url = {https://hal.science/hal-05645687v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Metal-Doped TiO2 Optical Fiber Textiles for Concurrent Removal of Airborne Bacteria and Volatile Organic Compounds
AU - Aymen Amine Assadi
AU - Youcef Serhane
AU - Mohammod Hafizur Rahman
AU - Mohamed Aziz Hajjaji
AU - Abdelkrim Bouzaza
AU - Hichem Tahraoui
AU - Jie Zhang
AU - Abdeltif Amrane
PY - 2026
DA - 2026/05/16
JO - Catalysts
DO - 10.3390/catal16050465
UR - https://hal.science/hal-05645687v1
AB - This study focuses on the application of photocatalysis for air pollution, targeting both chemical and biological contaminants. The selected target compounds were 3-methylbutan-1-ol (C5H12O), a volatile organic compound abundantly generated in the food industry, and Escherichia coli, representing a relevant bacterial indicator commonly encountered in such industrial environments and effectively embodying a biological threat. In this work, a series of experiments was conducted in a batch reactor using a novel TiO2-based photocatalytic system integrating metal wires, namely copper (Cu) and silver (Ag), woven into an optical fiber support. A comparative evaluation of photocatalytic performance across different media was carried out for the removal of 3-methylbutan-1-ol, as well as for E. coli deactivation. The results demonstrated notable performance of the TiO2-Cu medium for chemical treatment, achieving 97% removal efficiency after 85 min at an inlet concentration of 28 mg·m−3. Similarly, significant antibacterial activity was observed with 5.50 log reduction in colony-forming units (CFU) after 2.5 h. The photocatalytic performance of TiO2-Cu supports was further validated under different operating conditions, including relative humidity levels ranging from 20% to 60% and concentration range from 5–30 mg·m−3. Finally, this study also includes a comparison between the TiO2-Cu support and conventional photocatalytic systems based on TiO2, particularly for simultaneous (combined) treatment of chemical and biological contaminants, with promising and encouraging outcomes.
SN - 2073-4344
ER -