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Search Results (3)

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Keywords = luminous textile photocatalysis

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15 pages, 3388 KB  
Article
Unlocking the Synergy of Coupled Cold Plasma and Luminous Textile Photocatalysis for Indoor Air Purification: Simultaneous Elimination of Ethyl Acetate and Microorganisms
by Sarra Karoui, Mohamed Aziz Hajjaji, Ahmed Amine Azzaz, Oussama Baaloudj, Mohamed el Kebir, Mohammod Hafizur Rahman and Amine Aymen Assadi
Catalysts 2026, 16(6), 541; https://doi.org/10.3390/catal16060541 - 10 Jun 2026
Viewed by 393
Abstract
This study investigates the simultaneous elimination of ethyl acetate (EA), a representative volatile organic compound (VOC), and Escherichia coli aerosols from indoor air using a continuous-flow dielectric barrier discharge (DBD) plasma reactor coupled with a photocatalytic luminous textile system (Cu/TiO2-coated fibers). [...] Read more.
This study investigates the simultaneous elimination of ethyl acetate (EA), a representative volatile organic compound (VOC), and Escherichia coli aerosols from indoor air using a continuous-flow dielectric barrier discharge (DBD) plasma reactor coupled with a photocatalytic luminous textile system (Cu/TiO2-coated fibers). The effects of applied voltage, relative humidity, and air-flow rate on pollutant removal and disinfection performance were systematically evaluated. Optimal DBD operation at 18 kV, 1 m3 h−1 airflow, and 70% relative humidity achieved single-process removal efficiencies of 77% for EA and 2 log reduction (CFU mL−1) for E. coli. When photocatalysis was coupled with DBD plasma, a significant combined effect was observed, increasing EA degradation to 87% and bacterial inactivation to 3.8 log (CFU mL−1). The coupling enhanced active-species generation, improved CO2 selectivity (up to 53%), and reduced residual ozone concentration. Humidity positively affected microbial inactivation due to °OH radical formation but slightly decreased VOC degradation by limiting ozone regeneration. Results demonstrate the efficiency and scalability of the DBD–photocatalysis hybrid system for multi-pollutant indoor air purification, offering rapid, low-temperature treatment suitable for industrial-scale applications. Full article
(This article belongs to the Special Issue Catalytic Applications of Nanomaterials in Air Pollutant Degradation)
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15 pages, 3642 KB  
Article
Photocatalytic Luminous Textiles for the Treatment of Wastewater Issued from Petroleum Activity: Photocatalytic Process Extrapolation
by Achraf Amir Assadi, Hicham Zeghioud, Nacer Belkessa, Amina Rabahi, Atef EL Jery, Moutaz Aldrdery and Aymen Amine Assadi
Catalysts 2024, 14(10), 663; https://doi.org/10.3390/catal14100663 - 24 Sep 2024
Viewed by 2640
Abstract
In this study, the degradation of naphthalene in water was performed via photocatalysis with two different configurations: UV-irradiated TiO2 deposited on cellulosic tissue and photocatalytic luminous textiles. The photocatalytic performance of these configurations was evaluated in terms of pollutant removal and mineralization [...] Read more.
In this study, the degradation of naphthalene in water was performed via photocatalysis with two different configurations: UV-irradiated TiO2 deposited on cellulosic tissue and photocatalytic luminous textiles. The photocatalytic performance of these configurations was evaluated in terms of pollutant removal and mineralization yield. Moreover, the influence of key operating parameters, such as the initial pollutant concentration, solution turbidity, the number of tissues, and the type of irradiation, was investigated. The results showed a complete removal of 8 mg/L of naphthalene with photocatalytic luminous textiles after 4 h of UV irradiation, with a mineralization yield of 80%. The impact of the turbidity shows that at 90 NTU, reductions in photocatalytic activity of 30% and 10% were recorded for the UV-irradiated TiO2 deposed on cellulosic tissue and photocatalytic luminous textiles, respectively. The reactive oxygen species (ROS) concentrations were monitored during photocatalysis to better understand the contribution of each active species in the mechanism reaction of naphthalene oxidation. The results show that the hydroxyl radical (•OH) is responsible for 70% of pollutant oxidation. A scaling up of the water treatment with photocatalytic luminous textiles was performed. The extrapolation confirmed the same trends observed at the laboratory scale in terms of degradation and mineralization. Full article
(This article belongs to the Special Issue Recent Advances in Photocatalytic Degradation of Pollutants in Wastewater)
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15 pages, 3756 KB  
Article
Efficient Photocatalytic Luminous Textile for Simulated Real Water Purification: Advancing Economical and Compact Reactors
by Amin Aymen Assadi
Materials 2024, 17(2), 296; https://doi.org/10.3390/ma17020296 - 7 Jan 2024
Cited by 10 | Viewed by 2048
Abstract
The growing worldwide problem of wastewater management needs sustainable methods for conserving water supplies while addressing environmental and economic considerations. With the depletion of freshwater supplies, wastewater treatment has become critical. An effective solution is needed to efficiently treat the organic contaminants departing [...] Read more.
The growing worldwide problem of wastewater management needs sustainable methods for conserving water supplies while addressing environmental and economic considerations. With the depletion of freshwater supplies, wastewater treatment has become critical. An effective solution is needed to efficiently treat the organic contaminants departing from wastewater treatment plants (WWTPs). Photocatalysis appears to be a viable method for eliminating these recalcitrant micropollutants. This study is focused on the degradation of Reactive Black 5 (RB5), a typical contaminant from textile waste, using a photocatalytic method. Titanium dioxide (TiO2) was deposited on a novel luminous fabric and illuminated using a light-emitting diode (LED). The pollutant degrading efficiency was evaluated for two different light sources: (i) a UV lamp as an external light source and (ii) a cold LED. Interestingly, the LED UV source design showed more promising results after thorough testing at various light levels. In fact, we note a 50% increase in mineralization rate when we triple the number of luminous tissues in the same volume of reactor, which showed a clear improvement with an increase in compactness. Full article
(This article belongs to the Special Issue New Trends of Functional Materials for Wastewater Treatment Applications)
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