Insights into the formation of environmentally persistent free radicals during photocatalytic degradation processes of ceftriaxone sodium by ZnO/ZnIn2S4

Yang, Jianhua; Liu, Feng; Li, Zhengkui; Jia, Yong; Jiang, Yongbin; Lian, Jing; Gan, Xinhong

doi:10.1016/j.chemosphere.2022.137618

Cited by 15 publications

(3 citation statements)

References 75 publications

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“…ZnO photocatalyst was made through hydrothermal calcination using the following two-step method (Nemiwal et al, 2021). Using the hydrothermal method, we produced the flower-like ZnO/ZIS further (Yang et al, 2023). The methods are stated in Supplementary Text S1.…”

Section: Synthesis Of Photocatalystmentioning

confidence: 99%

The efficient degradation and mechanism of sulfamethoxazole using ZnO/ZnIn2S4 heterojunction under visible light

Gan,

Song,

Liu

et al. 2023

Front. Environ. Sci.

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We hydrothermally synthesized a flower-shaped ZnO/ZnIn2S4(ZnO/ZIS) Z-scheme heterojunction, which could decompose antibiotics efficiently. Meanwhile, the photocatalysts degradation of sulfamethoxazole (SMX) as the representative pollutant by ZnO/ZIS were studied deeply. When irradiated by a xenon lamp (500 W), ZnO/ZIS (0.20 g/L) degraded SMX (2.5 mg/L) in 6.5 h with an efficiency of 74.9%. The O2− and h+ played key roles in the visible light-assisted decomposition of SMX by ZnO/ZIS, while the role of OH was supplementary. Additionally, we investigated the mechanism of the generation of active species environmentally persistent free radicals (PFRs) within the SMX degradation using ZnO/ZIS by performing computations and experimental analyses based on density functional theory. Besides, PFRs (predominantly oxygen-centered) generated during the visible light-assisted SMX degradation by ZnO/ZIS had a concentration of 1011 spin/mm3. The generation of PFRs involves two major events, i.e., chemical adsorption and electron transfer. To adsorb the precursor F9a on ZnO, the energy required was −2.03 eV, and the electrons were transferred to the ZnO/ZnIn2S4 heterojunction from the precursor F9a. The PFRs only had minor negative impacts on the SMX degradation through ZnO/ZIS.

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Section: Synthesis Of Photocatalystmentioning

confidence: 99%

The efficient degradation and mechanism of sulfamethoxazole using ZnO/ZnIn2S4 heterojunction under visible light

Gan,

Song,

Liu

et al. 2023

Front. Environ. Sci.

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“…4 Furthermore, it has been known that the photocatalytic methods proficiently degrade the refraining antibiotics into smaller molecules like CO 2 , H 2 O, etc. 5 To date, several photocatalysts have been used for the degradation of several organic pollutants. However, incompetent utilization of solar energy, high market value, and less biodegradable nature are a few of the fundamental traits that limit their applicability on a large scale.…”

Section: Introductionmentioning

confidence: 99%

“…The benefits offered by photocatalysts for which their utilization has increased are attributable to their biocompatibility, utilization of renewable solar energy, and generation of less hazardous byproducts . Furthermore, it has been known that the photocatalytic methods proficiently degrade the refraining antibiotics into smaller molecules like CO 2 , H 2 O, etc . To date, several photocatalysts have been used for the degradation of several organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Combinatorial Photoactivity Enhancement of Ternary Nanohybrids: Ag Cocatalyst-Dispersed Monoclinic Bi₂O₃/g-C₃N₄ through the Synergistic Action of Induced Oxygen Defect and Porosity for Abatement of Fluoroquinolones and Boosted Antimicrobial Activity

Aparajita,

Das,

Sahoo

et al. 2024

ACS Appl. Eng. Mater.

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The synergistic regulation of the generated surface oxygen vacancies and induced porosity leading to an alteration in morphology, and subsequently their overall impact on changing the dynamics of charge transfer, has not received much attention yet. Herein, strategically introduced surface defects and ultraporosity in the fabricated nanohybrids result in a multifold enhancement in their photoactivity (8-to 10-fold more than the respective precursors) to combat the bioresistance of fluoroquinolones. Additionally, the process shows that the addition of silver enhances the light-harvesting capacity due to the localized surface plasmonic resonance effect. The formulated nanohybrid 15 wt % ABOG has high photodegradation efficiencies of 93.65, 92.52, and 90.55% for the photodegradation of environmentally persistent antibiotics tetracycline, norfloxacin, and isoniazid, respectively, at a time interval of 75 min. In addition, the generated heterojunctions' antimicrobial activity against DH5-α has been surveyed and exhibits promising outcomes. Through measures of surface wettability, the hydrophilic nature has also been validated. The work illustrates how synergistic regulation converts a typical Type-II charge transfer scheme into a more advanced S scheme. Studies on the reusability of synthesized nanocomposites further reveal their potential in multimodal applications.

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Green synthesis of AgCoFe2O4@Ch/AC as a recyclable, magnetic nanohybrid heterogeneous catalyst in photodegradation of ceftriaxone from aqueous solutions with effluent bioassay

Amiri Fard,

Nasiri,

Daraei

2023

Appl Water Sci

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Ceftriaxone (CFTR) is among the most commonly used antibiotics in the treatment of different types of bacterial infections and widespread pneumonias. It was also known as one of the most frequently prescribed antibiotics during the Corona pandemic. This drug has a longer half-life than other antibiotics. In this research, the heterogeneous magnetic nanophotocatalyst AgCoFe2O4@Chitosan(Ch)/activated carbon (AC) was synthesized by co-precipitation method under microwave waves. The catalyst structure was characterized by XRD, FTIR, FESEM, EDS, mapping, line scan, BET, VSM and DRS analyzers. Then, the effect of pH, CFTR concentration, nanophotocatalyst dose and irradiation time on the photocatalytic process efficiency was investigated. The analyses showed that the catalyst was synthesized on a nanometer scale, high surface area (60.044 m2/g), high magnetic strength (Ms = 10.39 emu/g) and appropriate optical activity with band gap (3.1 eV). The highest removal efficiency at pH = 3, CFTR concentration of 5 mg/L, dose of 0.24 g/L, and irradiation time of 60 min was obtained at 98.8% and 79.01% for synthetic and real wastewater samples, respectively. The reaction kinetics followed the pseudo-first-order and Langmuir–Hinshelwood kinetic models with KC = 0.23 mg/L min and KL−H = 0.168 L/mg. The recovered catalyst was able to remove CFTR with an efficiency of 80.16% after 4 reuse cycles. The results of scavenger radical tests showed that the main active radical species was $$^{ \cdot } {\text{OH}}$$ · OH . The obtained results from the effluent toxicity on the germination index of lettuce, watercress, radish and tomato seeds showed a significant reduction in the environmental hazards of the effluent. Due to the high efficiency, this nanophotocatalyst can be used for the treatment of pharmaceutical and hospital wastewaters, and the effluent has the least toxicity for the environment.

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Insights into the formation of environmentally persistent free radicals during photocatalytic degradation processes of ceftriaxone sodium by ZnO/ZnIn2S4

Cited by 15 publications

References 75 publications

The efficient degradation and mechanism of sulfamethoxazole using ZnO/ZnIn2S4 heterojunction under visible light

The efficient degradation and mechanism of sulfamethoxazole using ZnO/ZnIn2S4 heterojunction under visible light

Combinatorial Photoactivity Enhancement of Ternary Nanohybrids: Ag Cocatalyst-Dispersed Monoclinic Bi₂O₃/g-C₃N₄ through the Synergistic Action of Induced Oxygen Defect and Porosity for Abatement of Fluoroquinolones and Boosted Antimicrobial Activity

Green synthesis of AgCoFe2O4@Ch/AC as a recyclable, magnetic nanohybrid heterogeneous catalyst in photodegradation of ceftriaxone from aqueous solutions with effluent bioassay

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Insights into the formation of environmentally persistent free radicals during photocatalytic degradation processes of ceftriaxone sodium by ZnO/ZnIn2S4

Cited by 15 publications

References 75 publications

The efficient degradation and mechanism of sulfamethoxazole using ZnO/ZnIn2S4 heterojunction under visible light

The efficient degradation and mechanism of sulfamethoxazole using ZnO/ZnIn2S4 heterojunction under visible light

Combinatorial Photoactivity Enhancement of Ternary Nanohybrids: Ag Cocatalyst-Dispersed Monoclinic Bi2O3/g-C3N4 through the Synergistic Action of Induced Oxygen Defect and Porosity for Abatement of Fluoroquinolones and Boosted Antimicrobial Activity

Green synthesis of AgCoFe2O4@Ch/AC as a recyclable, magnetic nanohybrid heterogeneous catalyst in photodegradation of ceftriaxone from aqueous solutions with effluent bioassay

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Combinatorial Photoactivity Enhancement of Ternary Nanohybrids: Ag Cocatalyst-Dispersed Monoclinic Bi₂O₃/g-C₃N₄ through the Synergistic Action of Induced Oxygen Defect and Porosity for Abatement of Fluoroquinolones and Boosted Antimicrobial Activity