Influence of oxygen pressure to photoelectrochemical oxidation C.I. direct black 22 on TiO2 nanotube array photoanode

Исаев, А. Б.; Shabanov, N. S.; Orudzhev, Farid

doi:10.1007/s13762-017-1523-8

Cited by 7 publications

(4 citation statements)

References 40 publications

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“…An increase in the aeration rate leads to an increase the solubility of oxygen with a corresponding increase to the yield of hydrogen peroxide [89,90]. To increase the yield of hydrogen peroxide during the photo-electrochemical oxidation of the direct black dye 22 are shown in works (Isaev et al 2013;Isaev et al 2018), photoelectrolysis is carried out at elevated oxygen pressures of 0.1 to 0.7 MPa.…”

Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Исаев

Shabanov

Rabadanov

et al. 2023

Preprint

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Azo dyes are one of the large classes of water soluble synthetic dyes with a wide range of colors and can be released into the environment when used. Azo dyes belong to one of the most numerous groups of synthetic dyes and are characterized by the presence of an azo group (-N=N-) with two or more symmetrical or asymmetrical aromatic radicals. Processes of photoelectrochemical oxidation using various approaches have been developed for the removal of azo dyes from wastewater. The fundamentals of different photoelectrochemical oxidation processes for azo dyes, such as photoelectrocatalytic oxidation (PEC), photoelectro-Fenton (PEF), and solar photoelectro-Fenton (SPEF) processes, are discussed. The use of different semiconductor materials as electrode materials in photoelectrocatalysis and PEF for azo dye removal, the influence of different parameters on the removal of azo dyes from wastewater, reactor design, combined photoelectrochemical oxidation, including the use of fuel cells, are also considered. The anodic, electrochemical, and photoelectrochemical oxidation processes for azo dye removal is compared. Also shows what products are mainly formed during photoelectrochemical oxidation of azo dyes and how photoelectrochemical oxidation affects the toxicity of azo dye solutions under different conditions.

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Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Исаев

Shabanov

Rabadanov

et al. 2023

Preprint

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“…Advanced oxidation processes (AOPs), particularly photocatalysis (PC), are considered some of the most effective tools for decomposing aqueous organic pollutants [3,4]. This is due to the relative simplicity of the process, its low labor requirements, its cost-effectiveness, and absence of secondary pollutants resulting from complete mineralization [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

et al. 2023

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The creation of multi-stimuli-sensitive composite polymer–inorganic materials is a practical scientific task. The combination of photoactive magneto-piezoelectric nanomaterials and ferroelectric polymers offers new properties that can help solve environmental and energy problems. Using the doctor blade casting method with the thermally induced phase separation (TIPS) technique, we synthesized a hybrid polymer–inorganic nanocomposite porous membrane based on polyvinylidene fluoride (PVDF) and bismuth ferrite (BiFeO3/BFO). We studied the samples using transmission and scanning electron microscopy (TEM/SEM), infrared Fourier spectroscopy (FTIR), total transmission and diffuse reflection, fluorescence microscopy, photoluminescence (PL), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), vibrating-sample magnetometer (VSM), and piezopotential measurements. Our results demonstrate that the addition of BFO increases the proportion of the polar phase from 76.2% to 93.8% due to surface ion–dipole interaction. We also found that the sample exhibits laser-induced fluorescence, with maxima at 475 and 665 nm depending on the presence of nanoparticles in the polymer matrix. Furthermore, our piezo-photocatalytic experiments showed that under the combined actions of ultrasonic treatment and UV–visible light irradiation, the reaction rate increased by factors of 68, 13, 4.2, and 1.6 compared to sonolysis, photolysis, piezocatalysis, and photocatalysis, respectively. This behavior is explained by the piezoelectric potential and the narrowing of the band gap of the composite due to the mechanical stress caused by ultrasound.

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“…Synthetic dyes used in the textile industry heavily pollute water. During textile dyeing, the dyes do not attach firmly to the fabric and are discharged with wastewater into the environment [1–4] . The presence of dyes in the environment has serious negative consequences for nature and human health, as dyes can be toxic to aquatic organisms that are part of the food chain [5,6] .…”

Section: Introductionmentioning

confidence: 99%

“…During textile dyeing, the dyes do not attach firmly to the fabric and are discharged with wastewater into the environment. [1][2][3][4] The presence of dyes in the environment has serious negative consequences for nature and human health, as dyes can be toxic to aquatic organisms that are part of the food chain. [5,6] To avoid the negative impact on the environment and human health, the treatment of dyes wastewater should be carried out using environmentally friendly technologies, such as adsorption, membrane filtration etc.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of Superparamagnetic Fe₃O₄ Nanoparticles for the Photo‐Fenton oxidation of Rhodamine B

et al. 2023

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Magnetite (Fe3O4) is one of the widely used materials as a catalyst in the photo‐Fenton process for the oxidation of dyes. We report about the electrochemical synthesis of the superparamagnetic Fe3O4 nanoparticles. The structure, morphology, chemical composition, and chemical state of the catalyst were characterized. The synthesized samples of superparamagnetic Fe3O4 nanoparticles were characterized using scanning electron microscopy, X‐ray diffraction spectroscopy (XRD), Raman shift spectroscopy, and vibrating magnetometer (VSM). The diffraction peaks and Raman shift spectra confirm the formation of Fe3O4. Superparamagnetic Fe3O4 nanoparticles were used as a catalyst for the oxidation of Rhodamine B (RhB) in a photo‐Fenton‐like process. The effect of operating parameters, including H2O2 concentration, catalyst concentration, and RhB concentration, on the RhB decomposition efficiency was investigated. The rate of color removal was 85 % after 12 minutes at RhB concentration of 2 mg/L, H2O2 concentration of 0.18 mM, and Fe3O4 concentration of 0.2 g/L. In addition, electrochemically synthesized superparamagnetic Fe3O4 nanoparticles showed that the catalyst activity decreased by only 7 % during recycling experiments, indicating long‐term stability of the sample.

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Influence of oxygen pressure to photoelectrochemical oxidation C.I. direct black 22 on TiO2 nanotube array photoanode

Cited by 7 publications

References 40 publications

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

Electrochemical Synthesis of Superparamagnetic Fe₃O₄ Nanoparticles for the Photo‐Fenton oxidation of Rhodamine B

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Influence of oxygen pressure to photoelectrochemical oxidation C.I. direct black 22 on TiO2 nanotube array photoanode

Cited by 7 publications

References 40 publications

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Porous Hybrid PVDF/BiFeO3 Smart Composite with Magnetic, Piezophotocatalytic, and Light-Emission Properties

Electrochemical Synthesis of Superparamagnetic Fe3O4 Nanoparticles for the Photo‐Fenton oxidation of Rhodamine B

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Electrochemical Synthesis of Superparamagnetic Fe₃O₄ Nanoparticles for the Photo‐Fenton oxidation of Rhodamine B