Anodic TiO2 Nanotube Layers for Wastewater and Air Treatments: Assessment of Performance Using Sulfamethoxazole Degradation and N2O Reduction

Šihor, Marcel; Gowrisankaran, Sridhar; Martaus, Alexandr; Motola, Martin; Mailhot, Gilles; Brigante, Marcello; Monfort, Olivier

doi:10.3390/molecules27248959

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…At present, coagulation and adsorption, membrane separation and advanced oxidation techniques [7][8][9] are often used to treat antibiotic wastewater. Coagulation adsorption and membrane separation are only physical processes that achieve the transfer of antibiotics but not the degradation of antibiotics [10][11] .…”

Section: Introductionmentioning

confidence: 99%

Construction of TiO2/g-C3N5 S-scheme heterojunction for enhanced photocatalytic degradation of organic pollutants: DFT calculation and mechanism study

Liu,

Zhang,

Hong

et al. 2024

Preprint

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The g-C3N5 has been widely used in the field of environmental remediation because of its narrow band gap energy and good visible light absorption. It is an excellent semiconductor photocatalytic material, but the recombination of photogenerated carriers greatly limits the photocatalytic performance of g-C3N5. Construction of heterojunctions is an efficient method to regulate the band gap structure, which can achieve efficient separation of photogenerated carriers and improve photocatalytic performance. In this study, the TiO2/g-C3N5 heterojunction materials with high specific surface area were constructed, and the S scheme charge transfer mechanism led to efficient photogenerated carrier separation, excellent redox activity, improved visible light absorption and broadened spectral response range. After visible light irradiation for 30 minutes, the TiO2/g-C3N5 (1:2) showed excellent photocatalytic activity, and the degradation rate of sulfamethylthiazole (STZ) reached 98.8%. STZ was degraded to small inorganic molecules such as H2O, CO2 and inorganic acids by a complex bond-breaking hydroxylation reaction under the attack of reactive groups such as ·O2−,·OH and h+. The S scheme charge transfer mechanism of TiO2/g-C3N5 heterojunction material was proposed through band potential analysis and density functional function (DFT) calculation.

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Section: Introductionmentioning

confidence: 99%

Construction of TiO2/g-C3N5 S-scheme heterojunction for enhanced photocatalytic degradation of organic pollutants: DFT calculation and mechanism study

Liu,

Zhang,

Hong

et al. 2024

Preprint

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“…Titanium dioxide (TiO 2 ) a nontoxic material, due to its great chemical stability, high resistance to photo corrosion, and inexpensive cost, has been one of the most investigated materials in the past few years [20,21]. TiO 2 photocatalysts that are efficient and stable can be developed out of nanomaterials with morphologies ranging from 0D to 3D [22] and among all these forms, TiO 2 nanotubes (NTs) are a part of 1D titanium nanostructures and are remarkable nanostructured photocatalysts, in large part due to their exceptional electron transport capabilities [3,23,24]. While nanostructured TiO 2 possesses remarkable properties, it is not without its limitations.…”

Section: Introductionmentioning

confidence: 99%

Photocatalyst Based on Nanostructured TiO2 with Improved Photocatalytic and Antibacterial Properties

Irodia,

Ungureanu,

Sătulu

et al. 2023

Materials

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This study shows an easy way to use electrochemistry and plasma layering to make Cobalt-Blue-TiO2 nanotubes that are better at catalysing reactions. Once a titanium plate has been anodized, certain steps are taken to make oxygen vacancies appear inside the TiO2 nanostructures. To find out how the Co deposition method changed the final catalyst’s properties, it was put through electrochemical tests (to find the charge transfer resistance and flat band potential) and optical tests (to find the band gap and Urbach energy). The catalysts were also described in terms of their shape, ability to stick to surfaces, and ability to inhibit bacteria. When Cobalt was electrochemically deposited to Blue-TiO2 nanotubes, a film with star-shaped structures was made that was hydrophilic and antibacterial. The band gap energy went down from 3.04 eV to 2.88 eV and the Urbach energy went up from 1.171 eV to 3.836 eV using this electrochemical deposition method. Also, photodegradation tests with artificial doxycycline (DOX) water were carried out to see how useful the study results would be in real life. These extra experiments were meant to show how the research results could be used in real life and what benefits they might have. For the bacterial tests, both gram-positive and gram-negative bacteria were used, and BT/Co-E showed the best response. Additionally, photodegradation and photoelectrodegradation experiments using artificial doxycycline (DOX) water were conducted to determine the practical relevance of the research findings. The synergistic combination of light and applied potential leads to 70% DOX degradation after 60 min of BT/Co-E irradiation.

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“…Titanium 2 dioxide (TiO2) a nontoxic material, due to its great chemical stability, high resistance to photo corrosion, and inexpensive cost, has been one of the most investigated materials in the past few years [20,21]. TiO2 photocatalysts most efficient and stable can be developed out of nanomaterials with morphologies ranging from 0D to 3D and among all these forms, TiO2 nanotubes (NT) are a part of 1D titanium nanostructures and are remarkable nanostructured photocatalysts, in large part due to their exceptional electron transport capabilities [22]. While nanostructured TiO2 possesses remarkable properties, it is not without its limitations.…”

Section: Introductionmentioning

confidence: 99%

Exploring Cobalt Doping Methods for Enhancing Blue-TiO2 Catalyst Efficiency

Irodia¹,

Ungureanu²,

Satulu³

et al. 2023

Preprint

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This study presents a straightforward electrochemical and plasma deposition method for producing Cobalt-doped Blue-TiO2 nanotubes with enhanced catalytic properties. After a titanium plate has been anodized, specific procedures are carried out that cause oxygen vacancies to form inside the TiO2 nanostructures. The obtained catalysts were subjected to electrochemical tests (to identify charge transfer resistance and flat band potential), optical analysis (to determine the band gap and Urbach energy) and also characterized in terms of morphology, wettability and antibacterial effect in order to understand and analyze the impact of the Co doping method on the final catalyst characteristics. A hydrophilic film with star-shaped structures and with antibacterial effect was created when cobalt was electrochemically doped to Blue-TiO2 nanotubes. By using this electrochemical doping technique, the Urbach energy was raised from 1.171 to 3.836 eV while the band gap energy was decreased from 3.04 to 2.88 eV. Additionally, photodegradation experiments using artificial doxycycline (DOX) water were conducted to determine the practical relevance of the research findings. In areas like antimicrobial applications and photodegradation of DOX, these extra experiments aimed to show the practical applicability and potential advantages of the research findings.

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Anodic TiO2 Nanotube Layers for Wastewater and Air Treatments: Assessment of Performance Using Sulfamethoxazole Degradation and N2O Reduction

Cited by 6 publications

References 35 publications

Construction of TiO2/g-C3N5 S-scheme heterojunction for enhanced photocatalytic degradation of organic pollutants: DFT calculation and mechanism study

Construction of TiO2/g-C3N5 S-scheme heterojunction for enhanced photocatalytic degradation of organic pollutants: DFT calculation and mechanism study

Photocatalyst Based on Nanostructured TiO2 with Improved Photocatalytic and Antibacterial Properties

Exploring Cobalt Doping Methods for Enhancing Blue-TiO2 Catalyst Efficiency

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