Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

Serhane, Youcef; Belkessa, Nacer; Bouzaza, Abdelkrim; Wolbert, Dominique; Assadi, Aymen Amin

doi:10.1016/j.chemosphere.2022.133809

Cited by 17 publications

(8 citation statements)

References 51 publications

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“…In the past decade, titanium dioxide (TiO 2 ) has been one of the most studied materials thanks to its unique chemical and physical properties, including its high chemical stability, high resistance to photo corrosion, and its low cost [11]. Nanostructured TiO 2 has also been used in many applications such as sensors [12], photocatalysis [13][14][15][16], and solar energy conversion [17]. TiO 2 nanotubes have attracted particular attention because of their high specific surface area [18], high photoactivity [19], and the rapid transfer rate of holes and electron-hole pairs (e − /h + ) photogenerated along the nanotubes [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of TiO2 Nanotubes (TiO2-NTs) with Ag Silver Nanoparticles (Ag-NPs): Photocatalytic Performance for Wastewater Treatment under Visible Light

et al. 2022

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In this work, we present the influence of the decoration of TiO2 nanotubes (TiO2-NTs) with Ag silver nanoparticles (Ag-NPs) on the photocatalysis of emerging pollutants such as the antibiotic diclofenac sodium. The Ag-NPs were loaded onto the TiO2-NTs by the anodization of metallic titanium foils. Diclofenac sodium is an emerging pollutant target of the pharmaceutical industry because of its negative environmental impact (high toxicity and confirmed carcinogenicity). The obtained Ag-NP/TiO2-NT nanocomposites were characterized by X-ray diffraction (XRD), photoluminescence spectroscopy (PL), scanning electron microscopy (SEM), transmission spectroscopy (TEM), and X-ray photoelectron spectroscopy (XPS). In order to study the photocatalytic behavior of Ag-NPs/TiO2-NTs with visible cold LEDs, the possible photocatalytic mechanism of antibiotic degradation with reactive species (O2°− and OH°) was detailed. Moreover, the Langmuir–Hinshelwood model was used to correlate the experimental results with the optimized catalyst. Likewise, reuse tests showed the chemical stability of the catalyst.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of TiO2 Nanotubes (TiO2-NTs) with Ag Silver Nanoparticles (Ag-NPs): Photocatalytic Performance for Wastewater Treatment under Visible Light

et al. 2022

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“…Thus, this compact configuration presents excellent performances in terms of pollutant removal with less energy consumption, compared to the classical configuration [33].…”

Section: Comparison Of the Photocatalytic Reactor Configurationsmentioning

confidence: 96%

“…The titanium dioxide then forms agglomerates of varying size (0.1 to 1 μm). More details on this photocatalytic media have been presented in our previous publications [31][32] [33].…”

Section: Photocatalytic Supportmentioning

confidence: 99%

New UV-LED frontal flow photocatalytic reactor for VOCs treatment: Compactness, intensification and optimization studies

Serhane

Bouzaza

Wolbert

et al. 2023

Chemical Engineering Journal

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“…The photo-excited electron is reduced to form the superoxide radical anion (O 2 •− ). These radicals are keys to the degradation of organic compounds [ 35 ].…”

Section: Photocatalysis and Mass Transfermentioning

confidence: 99%

“…Among all semiconductors, Titanium dioxide (TiO 2 )-based materials have received particular attention in the photocatalysis field for their light absorption ability and high-efficiency treatment for both water and air; it was discovered by Fujishima and Honda in 1972 [ 36 ]. According to previous investigations, TiO 2 -based photocatalysts also provide the advantages of high stability, availability, nontoxicity, excellent photoactivity, and low cost [ 35 ]. The photocatalysis of TiO 2 depends on variables such as specific surface area, crystallinity and surface hydroxyl groups of the TiO 2 [ 37 ].…”

Section: Photocatalysis and Mass Transfermentioning

confidence: 99%

An Overview of Recent Developments in Improving the Photocatalytic Activity of TiO2-Based Materials for the Treatment of Indoor Air and Bacterial Inactivation

et al. 2023

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Indoor air quality has become a significant public health concern. The low cost and high efficiency of photocatalytic technology make it a natural choice for achieving deep air purification. Photocatalysis procedures have been widely investigated for environmental remediation, particularly for air treatment. Several semiconductors, such as TiO2, have been used for photocatalytic purposes as catalysts, and they have earned a lot of interest in the last few years owing to their outstanding features. In this context, this review has collected and discussed recent studies on advances in improving the photocatalytic activity of TiO2-based materials for indoor air treatment and bacterial inactivation. In addition, it has elucidated the properties of some widely used TiO2-based catalysts and their advantages in the photocatalytic process as well as improved photocatalytic activity using doping and heterojunction techniques. Current publications about various combined catalysts have been summarized and reviewed to emphasize the significance of combining catalysts to increase air treatment efficiency. Besides, this paper summarized works that used these catalysts to remove volatile organic compounds (VOCs) and microorganisms. Moreover, the reaction mechanism has been described and summarized based on literature to comprehend further pollutant elimination and microorganism inactivation using photocatalysis. This review concludes with a general opinion and an outlook on potential future research topics, including viral disinfection and other hazardous gases.

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Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

Cited by 17 publications

References 51 publications

Synthesis and Characterization of TiO2 Nanotubes (TiO2-NTs) with Ag Silver Nanoparticles (Ag-NPs): Photocatalytic Performance for Wastewater Treatment under Visible Light

Synthesis and Characterization of TiO2 Nanotubes (TiO2-NTs) with Ag Silver Nanoparticles (Ag-NPs): Photocatalytic Performance for Wastewater Treatment under Visible Light

New UV-LED frontal flow photocatalytic reactor for VOCs treatment: Compactness, intensification and optimization studies

An Overview of Recent Developments in Improving the Photocatalytic Activity of TiO2-Based Materials for the Treatment of Indoor Air and Bacterial Inactivation

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