Electrochemical degradation of doxycycline hydrochloride on Bi/Ce co-doped Ti/PbO2 anodes: Efficiency and mechanism

Gao, Guangfei; Zhang, Xuan; Wang, Pengqi; Ren, Yi; Meng, Xiangxin; Ding, Yue; Zhang, Tao; Jiang, Wenqiang

doi:10.1016/j.jece.2022.108430

Cited by 22 publications

(3 citation statements)

References 72 publications

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“…The diffraction peaks of Pb-O and 2PbCO 3 -Pb(OH) 2 appeared in the XPS pattern of the Pb electrodes ( Figure 4 b). This included intermediate products and by-products of the electrodeposition process, confirmed by the findings of Gao et al [ 33 ].…”

Section: Resultssupporting

confidence: 81%

Ti/PbO2 Electrode Efficiency in Catalytic Chloramphenicol Degradation and Its Effect on Antibiotic Resistance Genes

Líu

Zhai

Wang

et al. 2022

IJERPH

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Livestock farming has led to the rapid accumulation of antibiotic resistance genes in the environment. Chloramphenicol (CAP) was chosen as a model compound to investigate its degradation during electrochemical treatment. Ti/PbO2 electrodes were prepared using electrodeposition. The prepared Ti/PbO2-La electrodes had a denser surface and a more complete PbO2 crystal structure. Ti/PbO2-Co electrodes exhibited improved electrochemical catalytic activity and lifetime in practice. The impact of different conditions on the effectiveness of CAP electrochemical degradation was investigated, and the most favorable conditions were identified (current density: I = 15.0 mA/cm, electrolyte concentration: c = 0.125 mol/L, solution pH = 5). Most importantly, we investigated the effects of the different stages of treatment with CAP solutions on the abundance of resistance genes in natural river substrates (intI1, cmlA, cmle3, and cata2). When CAP was completely degraded (100% TOC removal), no effect on resistance gene abundance was observed in the river substrate; incomplete CAP degradation significantly increased the absolute abundance of resistance genes. This suggests that when treating solutions with antibiotics, they must be completely degraded (100% TOC removal) before discharge into the environment to reduce secondary pollution. This study provides insights into the deep treatment of wastewater containing antibiotics and assesses the environmental impact of the resulting treated wastewater.

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Section: Resultssupporting

confidence: 81%

Ti/PbO2 Electrode Efficiency in Catalytic Chloramphenicol Degradation and Its Effect on Antibiotic Resistance Genes

Líu

Zhai

Wang

et al. 2022

IJERPH

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“…Titanium anode is a dimensionally stable anode composed of a titanium metal substrate and a surface active coating. Since its discovery in 1968, titanium anode has been widely used in various fields such as chemical industry, environmental protection, water electrolysis, water treatment, electrometallurgy, electroplating, and metal foil production [1][2][3][4][5][6]. The main process of preparing titanium anode is to coat the pre-treated titanium plate surface with a prepared coating solution, followed by sintering to form a conductive titanium plate surface coating.…”

Section: Introductionmentioning

confidence: 99%

Effects of different pretreatments on Ti/RuO₂-TiO₂ anode

Li,

Xu,

Han

et al. 2024

Mater. Res. Express

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In this study, H2C2O4, H2SO4, HNO3, and HCl were used to etch the TA2 titanium matrix at the same concentration and temperature, and the effects of different acid etching methods on the properties of the titanium matrix and Ru-Ti electrode were investigated. The surface morphology of the titanium substrate and anode after acid etching was observed by scanning electron microscopy (SEM), while the electrochemical performance of the anode was determined by cyclic voltammetry (CV), linear sweep voltammetry (LSV), and tafel plots. SEM observations showed that H2C2O4 had the best etching effect on the titanium substrate, as the scratches were uniform, and the surface cracks of the prepared anode reached 4-6 µm; Analysis of the CV curves revealed that the Ti/RuO2-TiO2 anode prepared by H2C2O4 etching had the highest surface charge capacity (172 mC) compared to the anodes prepared by other acid etchings, while the LSV curves showed that the Ti/RuO2-TiO2 anode after H2C2O4 etching had the lowest polarization potential (1.232 V). Tafel curve analysis revealed that the corrosion potential of the Ti anode prepared by H2C2O4 etching was 0.203 V, and the self-corrosion current density was -5.11 A/cm2, indicating that the corrosion resistance of the Ti anode prepared by H2C2O4 treatment is the weakest. X-ray photoelectron spectroscopy analysis showed that the electrode surface changed from Ru4+ to Ru3+ after corrosion, with the Ti2p spectra showing similar transition from Ti4+ to Ti3+.

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“…Doxycycline (DOX) and tetracycline (TTC) are two kinds of TTCs that are among the largest groups of antibiotics widely used in agriculture and as growth promoters in livestock farming, leading to water pollution and the emergence of antibiotic resistance genes . A variety of methods, including sedimentation, ion exchange, reverse osmosis, , electrochemistry, , membrane separation, photodegradation, – biodegradation, and adsorption, have been employed for the treatment of wastewater containing DOX and TTC. Among them, adsorption and photodegradation are the most proper approaches for isolating these TTC-class pollutants from water resources. , However, in the adsorption method, the adsorbents will be contaminated after the process, and various integration schemes are needed to isolate TTC-class pollutants effectively.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Degradation of Tetracycline-Class Pollutants in Water Using a Dendritic Mesoporous Silica Nanocomposite Modified with UiO-66

Deymeh,

Ahmadpour,

Allahresani

et al. 2023

Ind. Eng. Chem. Res.

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Tetracyclines (TTCs), a widely used group of antibiotics in agriculture and animal husbandry, cause water pollution and the emergence of antibiotic-resistance genes. This study reports the synthesis of a metal–organic framework nanocomposite of UiO-66 based on modified dendritic fibrous nanosilica to act as a photocatalyst for the degradation of doxycycline (DOX) and TTC as drug model pollutants in water. This nanocomposite demonstrated about three times better photodegradation performance than UiO-66 due to a decreased electron–hole recombination rate, increased conductivity, and decreased band gap, leading to the higher pollutant reduction efficiency. Structural and morphological analyses were performed on the nanocomposite, and various influencing parameters, including sample pH, catalyst dose, and irradiation time, were studied on the photocatalytic degradation of DOX and TTC to optimize the photodegradation process. At the optimum condition, the maximum photodegradation of 97.2 ± 3.1% was achieved for solutions containing 200 mg·L–1 each drug. The results showed that the proposed photocatalyst is stable and effective in eliminating TTC-class pollutants from water and wastewater with high efficiency and fast kinetics. The reusability of the catalyst was examined, and no significant decrease in the efficiency of the catalyst was observed after five times.

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Electrochemical degradation of doxycycline hydrochloride on Bi/Ce co-doped Ti/PbO2 anodes: Efficiency and mechanism

Cited by 22 publications

References 72 publications

Ti/PbO2 Electrode Efficiency in Catalytic Chloramphenicol Degradation and Its Effect on Antibiotic Resistance Genes

Ti/PbO2 Electrode Efficiency in Catalytic Chloramphenicol Degradation and Its Effect on Antibiotic Resistance Genes

Effects of different pretreatments on Ti/RuO₂-TiO₂ anode

Enhanced Photocatalytic Degradation of Tetracycline-Class Pollutants in Water Using a Dendritic Mesoporous Silica Nanocomposite Modified with UiO-66

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Electrochemical degradation of doxycycline hydrochloride on Bi/Ce co-doped Ti/PbO2 anodes: Efficiency and mechanism

Cited by 22 publications

References 72 publications

Ti/PbO2 Electrode Efficiency in Catalytic Chloramphenicol Degradation and Its Effect on Antibiotic Resistance Genes

Ti/PbO2 Electrode Efficiency in Catalytic Chloramphenicol Degradation and Its Effect on Antibiotic Resistance Genes

Effects of different pretreatments on Ti/RuO2-TiO2 anode

Enhanced Photocatalytic Degradation of Tetracycline-Class Pollutants in Water Using a Dendritic Mesoporous Silica Nanocomposite Modified with UiO-66

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Effects of different pretreatments on Ti/RuO₂-TiO₂ anode