SnO2-BiVO4 mixed catalyst: Characterization and kinetics study of the photodegradation of phenazopyridine

Yousefi, Ailin; Nezamzadeh‐Ejhieh, Alireza; Mirmohammadi, Mehrosadat

doi:10.1016/j.eti.2021.101433

Cited by 9 publications

(2 citation statements)

References 51 publications

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“…The photocatalytic ability of semiconductors is related to the excitation of electrons from the valence band to the conduction band caused by the absorption of a photon with an appropriate wavelength. The photoexcited electrons and holes are good reductant and powerful oxidant species, respectively [6][7][8]. In this scenario, the application of semiconductor materials for environmental remediation in large scale will depend, among other factors, on its activation in an effective way by solar radiation.…”

Section: Introductionmentioning

confidence: 99%

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

Landi

Segundo

Freitas

et al. 2022

Solid State Communications

256

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Section: Introductionmentioning

confidence: 99%

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

Landi

Segundo

Freitas

et al. 2022

Solid State Communications

256

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“…Undesirably, the photogenerated e – and h + have a thermodynamic tendency to recombine, giving rise to a lower quantum efficiency and photocatalytic activity . To overcome this drawback, various modification strategies have been applied, such as doping elements, modulating morphologies, designing defects, constructing heterojunctions, combining multiple semiconductors, introducing anion vacancies, and so on. − These strategies aim to speed up the transfer of photogenerated e – and h + from the bulk of a semiconductor to the surface or interface before their recombination. Among them, constructing a heterojunction is regarded as a promising approach .…”

Section: Introductionmentioning

confidence: 99%

Constructing a Z-Scheme Co₃O₄/BiOBr Heterojunction to Enhance Photocatalytic Peroxydisulfate Oxidation of High-Concentration Rhodamine B: Mechanism, Degradation Pathways, and Toxicological Evaluations

Zhang,

Xu,

et al. 2024

Inorg. Chem.

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Photocatalytic coupling technologies have emerged as popular strategies to increase the treatment efficiency of dyecontaining wastewater. Herein, the Z-scheme Co 3 O 4 /BiOBr heterojunction (Z-CBH) was constructed and developed as a photocatalytic peroxydisulfate (PDS) activator for the degradation of high-concentration Rhodamine B (RhB). Multiple testing techniques were employed to confirm the formation of Z-CBHs. When 0.1 g•L −1 of Z-CBH20 and 1.0 mmol•L −1 of PDS were added simultaneously under simulated sunlight irradiation, the RhB degradation efficiency could approach 91.3%. Its reaction rate constant (0.01231 min −1 ) was much beyond the sum of those in the Z-CBH20/light system (0.00436 min −1 ) and the PDS/light system (0.0062 min −1 ). h + , • OH, • O 2 − , SO 4•− , and 1 O 2 were detected as the dominant reactive species for RhB degradation. The potential mechanism of photocatalytic PDS oxidation was proposed. The possible intermediates were determined by highperformance liquid chromatography-quadrupole time-of-flight mass spectrometry assisted with density functional theory and Fukui theory. The possible degradation pathways of RhB degradation were put forward. The toxicological properties of RhB and its intermediates were evaluated by quantitative structure−activity relationship prediction. This work will not only provide a reference for developing photocatalytic persulfate activators but also gain an insight into the degradation pathways of RhB and the toxicity of its intermediates.

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Photocatalytic performance of textiles coated with titanium dioxide-reduced graphene oxide system for degradation of crude petroleum under similar solar irradiation

et al. 2022

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The pollution caused by oil and its toxic derivatives presents a considerable risk to the public health and the environment. This work is devoted to the study of the influence of TiO 2 nanoparticles immobilized on three types of textiles materials (Cotton, Entretela, and Polylactic Acid-PLA) coated with reduced graphene oxide (RGO) to be used for degradation of crude petroleum under simulated solar irradiation. The morphological studies of the functionalized textiles substrates were performed by using Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy, which indicated an excellent dispersion and adhesion of nanoparticles of about 60% (atomic %Ti) on the textile fibers covered with RGO after washing. Ultraviolet-visible Diffuse Reflectance spectra suggest a reduction in the band gap energy of TiO 2 up to 2.86 eV due to the presence of RGO. The functionalized textiles presented at least 60% of photocatalytic efficiency measured by Rhodamine B degradation, decreasing less than 12% after the rigorous washing. The excitation/emission Synchronous Fluorescence Spectroscopy and Fourier-transform Infrared spectroscopies demonstrated a great potential for photocatalytic degradation of the functionalized textiles substrates as the appearance of the hydroxyl, carboxyl, and the C-O bands confirm the photoinduced oxidation of the organic compounds implying with high prospects in petroleum and wastewater treatment areas. Moreover, this environmentally friendly, sustainable, and inclusive research work can be

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SnO2-BiVO4 mixed catalyst: Characterization and kinetics study of the photodegradation of phenazopyridine

Cited by 9 publications

References 51 publications

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

Constructing a Z-Scheme Co₃O₄/BiOBr Heterojunction to Enhance Photocatalytic Peroxydisulfate Oxidation of High-Concentration Rhodamine B: Mechanism, Degradation Pathways, and Toxicological Evaluations

Photocatalytic performance of textiles coated with titanium dioxide-reduced graphene oxide system for degradation of crude petroleum under similar solar irradiation

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SnO2-BiVO4 mixed catalyst: Characterization and kinetics study of the photodegradation of phenazopyridine

Cited by 9 publications

References 51 publications

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

Use and misuse of the Kubelka-Munk function to obtain the band gap energy from diffuse reflectance measurements

Constructing a Z-Scheme Co3O4/BiOBr Heterojunction to Enhance Photocatalytic Peroxydisulfate Oxidation of High-Concentration Rhodamine B: Mechanism, Degradation Pathways, and Toxicological Evaluations

Photocatalytic performance of textiles coated with titanium dioxide-reduced graphene oxide system for degradation of crude petroleum under similar solar irradiation

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Constructing a Z-Scheme Co₃O₄/BiOBr Heterojunction to Enhance Photocatalytic Peroxydisulfate Oxidation of High-Concentration Rhodamine B: Mechanism, Degradation Pathways, and Toxicological Evaluations