Enhanced photocatalytic degradation of ciprofloxacin by black Ti3+/N-TiO2 under visible LED light irradiation: Kinetic, energy consumption, degradation pathway, and toxicity assessment

Sarafraz, Mansour; Sadeghi, Morteza; Yazdanbakhsh, Ahmadreza; Amini, Mostafa M.; Sadani, Mohsen; Eslami, Akbar

doi:10.1016/j.psep.2020.02.030

Cited by 71 publications

(44 citation statements)

References 48 publications

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“…A similar inverse relationship between the photodegradation efficiency and antibiotic concentration was observed and reported by Alfred et al [73], Ioannidou et al [74], Cai and Hu [75], Sarafraz et al [24], Karim and Shriwastav [76], Wu et al [77] and Hassani et al [78], who used different photocatalyst systems for removal of different target antibiotics.…”

Section: Effect Of Antibiotic Concentrationsupporting

confidence: 82%

“…Obviously, increased catalyst concentration results in improved photocatalytic performance only up to a point, and any catalyst dosage beyond the optimal value leads to a decrease in removal efficiency. Such results were obtained also in the works of Ioannidou et al [74], Kim and Kan [81], Chiang and Doong [82], Sarafraz et al [24], Karim and Shriwastav [76], Hassani et al [78] and Abellan et al [83].…”

Section: Effect Of Catalyst Concentrationsupporting

confidence: 63%

“…This happens because these antibiotics are widely used in human and veterinary medicine, have the largest numbers of manufacturers [22], are toxic and persistent in the aquatic environment [4,16]. 3.2; 6.7 [23] 5.9; 8.9 [24] Solubility in water (mg/L) [8] 610 400 30000…”

Section: Sulfamethoxazole Trimethoprim and Ciprofloxacin As Antibiotics Of Great Concernmentioning

confidence: 99%

“…As a result, generation of reactive species is suppressed [75]. Secondly, as antibiotic concentration increases, more byproducts and intermediates are produced that compete with antibiotic molecules for a limited number of active sites on photocatalyst surface and reactive species present [24,73,77,78]. In addition, solution transmittance might be reduced when pharmaceutical concentration in the solution is increased.…”

Section: Effect Of Antibiotic Concentrationmentioning

confidence: 99%

“…Weaker transmittance results in longer pathways for photons to get to photocatalyst, so that lower number of photons is adsorbed on photocatalyst surface and, therefore, a lower number of reactive species are generated [77,78]. Moreover, some antibiotics (for example, CIP) adsorb photons themselves, so that a lower number of photons are available for the photocatalyst [24].…”

Section: Effect Of Antibiotic Concentrationmentioning

confidence: 99%

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Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

2021

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The extensive application of antibiotics in human and veterinary medicine has led to their widespread occurrence in a natural aquatic environment. Global health crisis is associated with the fast development of antimicrobial resistance, as more and more infectious diseases cannot be treated more than once. Sulfamethoxazole, trimethoprim and ciprofloxacin are the most commonly detected antibiotics in water systems worldwide. The persistent and toxic nature of these antibiotics makes their elimination by conventional treatment methods at wastewater treatment plants almost impossible. The application of advanced oxidation processes and heterogeneous photocatalysis over TiO2-based materials is a promising solution. This highly efficient technology has the potential to be sustainable, cost-efficient and energy-efficient. A comprehensive review on the application of various TiO2-based photocatalysts for the degradation of sulfamethoxazole, trimethoprim and ciprofloxacin is focused on highlighting their photocatalytic performance under various reaction conditions (different amounts of pollutant and photocatalyst, pH, light source, reaction media, presence of inorganic ions, natural organic matter, oxidants). Mineralization efficiency and ecotoxicity of final products have been also considered. Further research needs have been presented based on the literature findings. Among them, design and development of highly efficient under sunlight, stable, recyclable and cost-effective TiO2-based materials; usage of real wastewaters for photocatalytic tests; and compulsory assessment of products ecotoxicity are the most important research tasks in order to meet requirements for industrial application.

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Section: Effect Of Antibiotic Concentrationsupporting

confidence: 82%

Section: Effect Of Catalyst Concentrationsupporting

confidence: 63%

Section: Sulfamethoxazole Trimethoprim and Ciprofloxacin As Antibiotics Of Great Concernmentioning

confidence: 99%

Section: Effect Of Antibiotic Concentrationmentioning

confidence: 99%

Section: Effect Of Antibiotic Concentrationmentioning

confidence: 99%

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Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

2021

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S‐g‐C₃N₄/N−TiO₂ @PTFE Membrane for Photocatalytic Degradation of Tetracycline

et al. 2022

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Herein we synthesized S‐g‐C3N4 and N−TiO2 catalysts by hydrothermal and calcination technologies and SCN/NT@PTFE membrane by a vacuum filtration method. The morphology and composition of the synthesized materials were analyzed by different characterization methods (SEM/HRTEM/XRD/XPS/UV‐vis et.). The effects of different catalysts, pollutant concentrations, mass of catalyst and pH on the photo‐degradation of tetracycline were investigated. The degradation rate of tetracycline by SCN/NT‐2@PTFE membrane was as high as 99.9 % after 2 h of illumination. This was mainly because heterogeneous structure between S‐g‐C3N4 and N−TiO2 broadened the light absorption range and suppressed the carrier complex. Superoxide radicals (⋅O2−) were proved to play a dominant role in the degradation reaction. After 20 days of stirring in water, the photocatalytic performance of membrane decreased slightly, demonstrating its good stability. The study of SCN/NT‐2@PTFE membrane provides a new direction for the development of photocatalysis and membrane.

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The Z‐Scheme MIL‐88B(Fe)/BiOBr Heterojunction Promotes Fe(III)/Fe(II) Cycling and Photocatalytic‐Fenton‐Like Synergistically Enhances the Degradation of Ciprofloxacin

Liu,

Hu,

et al. 2024

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The Z‐scheme MIL‐88B/BiOBr (referred to as MxBy, whereas x and y are the mass of MIL‐88B(Fe) and BiOBr) heterojunction photocatalysts are successfully prepared by a facile ball milling method. By adding low concentration H2O2 under visible light irradiation, the Z‐scheme heterojunction and photocatalytic‐Fenton‐like reaction synergistically enhance the degradation and mineralization of ciprofloxacin (CIP). Among them, M50B150 showed efficient photodegradation efficiency and excellent cycling stability, with 94.6% removal of CIP (10 mg L−1) by M50B150 (0.2 g L−1) under 90 min of visible light. In the MxBy heterojunctions, the rapid transfer of photo‐generated electrons not only directly decomposed H2O2 to generate ·OH, but also improved the cycle of Fe3+/Fe2+ pairs, which facilitated the reaction with H2O2 to generate ·OH and ·O2− radicals. In addition, the effects of photocatalyst dosages, pH of CIP solution, and coexisting substances on CIP removal are systematically investigated. It is found that the photocatalytic‐ Fenton‐like reaction can be carried out at a pH close to neutral conditions. Finally, the charge transfer mechanism of the Z‐scheme is verified by electron spin resonance (ESR) signals. The ecotoxicity of CIP degradation products is estimated by the T.E.S.T tool, indicating that the constructed photocatalysis‐Fenton‐like system is a green wastewater treatment technology.

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Enhanced photocatalytic degradation of ciprofloxacin by black Ti3+/N-TiO2 under visible LED light irradiation: Kinetic, energy consumption, degradation pathway, and toxicity assessment

Cited by 71 publications

References 48 publications

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

S‐g‐C₃N₄/N−TiO₂ @PTFE Membrane for Photocatalytic Degradation of Tetracycline

The Z‐Scheme MIL‐88B(Fe)/BiOBr Heterojunction Promotes Fe(III)/Fe(II) Cycling and Photocatalytic‐Fenton‐Like Synergistically Enhances the Degradation of Ciprofloxacin

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Enhanced photocatalytic degradation of ciprofloxacin by black Ti3+/N-TiO2 under visible LED light irradiation: Kinetic, energy consumption, degradation pathway, and toxicity assessment

Cited by 71 publications

References 48 publications

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

Application of TiO2-Based Photocatalysts to Antibiotics Degradation: Cases of Sulfamethoxazole, Trimethoprim and Ciprofloxacin

S‐g‐C3N4/N−TiO2 @PTFE Membrane for Photocatalytic Degradation of Tetracycline

The Z‐Scheme MIL‐88B(Fe)/BiOBr Heterojunction Promotes Fe(III)/Fe(II) Cycling and Photocatalytic‐Fenton‐Like Synergistically Enhances the Degradation of Ciprofloxacin

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S‐g‐C₃N₄/N−TiO₂ @PTFE Membrane for Photocatalytic Degradation of Tetracycline