Construction of layered embedding dual Z-Scheme Bi2O2CO3/g-C3N4/Bi2O3: Tetracycline degradation pathway, toxicity analysis and mechanism insight

Wu, Chenyu; Zuo, Huiru; Du, Haoyu; Zhang, Siyu; Wang, Lingrui; Yan, Qishe

doi:10.1016/j.seppur.2021.120096

Cited by 36 publications

(4 citation statements)

References 67 publications

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“…Considering the presence of hydrolysis of TCH under strong alkali conditions, only the initial pH values of 3, 5, 7, 9 were discussed . We know that TCH is sensitive to pH due to the carbonyl and tricarbonyl amides in its chemical structure, so it exists in solution in three forms: cationic (pH < 3.3), zwitterionic (3.3 ≤ pH ≤ 7.7), and anionic (pH > 7.7). − The zeta potential of IB-7% at different pH values was measured and displayed in Figure S6. When pH < 9.24, the IB-7% surface was positively charged.…”

Section: Resultsmentioning

confidence: 99%

In₂O₃ Nanoparticle/Bi₄O₅Br₂ Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

Zhang

Zha

Luo

et al. 2023

ACS Appl. Nano Mater.

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The development of highly efficient photocatalysts for antibiotics contamination in water remains a severe challenge. In this study, In2O3 nanoparticle/Bi4O5Br2 nanosheet S-scheme heterojunction with interface oxygen vacancies (OVs) was constructed by a hydrothermal-calcination approach and a simple chemical precipitation process. Under simulated sunlight, this composite showed enhanced degradation efficiency for tetracycline hydrochloride (TCH) with 92.4%, which was much higher than those of pure Bi4O5Br2 (50.2%) and In2O3 (28.6%). The excellent removal efficiency was mainly attributed to the synergistic effect of S-scheme heterojunctions and interface OVs accelerating the complexation of unwanted electrons (e–) and holes (h+), thus retaining e– with the strong oxidizing ability and h+ with the strong reducing ability to participate in the reaction. In addition, the abundant OVs in In2O3 nanoparticles/Bi4O5Br2 nanosheets could enhance the adsorption of O2 and promote the generation of superoxide radicals (·O2 –). The toxicity of the tetracycline degradation products and the catalyst was evaluated by E. coli growth inhibition experiments. Based on the TCH intermediates detected by HPLC-MS, three possible TCH degradation pathways were proposed. This study shows that the construction of S-scheme heterojunctions with interfacial defects is an effective strategy for the preparation of efficient photocatalysts.

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Section: Resultsmentioning

confidence: 99%

In₂O₃ Nanoparticle/Bi₄O₅Br₂ Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

Zhang

Zha

Luo

et al. 2023

ACS Appl. Nano Mater.

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“…In addition, the BiOBr/Bi 2 O 2 CO 3 heterojunction complex catalyst studied in this paper has a relatively better TC degradation efficiency compared with the bismuth-based catalyst reported in the literature (Table S2). ,− …”

Section: Resultsmentioning

confidence: 99%

BiOBr/Bi₂O₂CO₃ Heterojunction Photocatalyst for the Degradation of Tetracycline

Jv,

Wu,

et al. 2024

ACS Appl. Nano Mater.

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In the past few decades, photocatalytic technology has made significant contributions to addressing the environmental pollution and energy crisis faced by the human society in the 21st century. The key to photocatalytic technology lies in the development of efficient photocatalysts, with the short lifetime of photogenerated charge carriers posing a major bottleneck to photocatalytic efficiency. This work presents the fabrication of a BiOBr/Bi 2 O 2 CO 3 heterojunction photocatalyst with an efficient charge transfer interface through the incorporation of surfactants and calcination treatment during the BiOBr synthesis process. The in situ construction strategy enables efficient charge transfer between BiOBr and Bi 2 O 2 CO 3 , thereby prolonging the lifetime of photogenerated carriers. By incorporating surfactants alone, the degradation rate of tetracycline by the BiOBr/Bi 2 O 2 CO 3 heterojunction photocatalyst with optimal activity is increased by over two times compared with that by BiOBr alone. Furthermore, LC−MS and quantitative structure−activity relationship analysis confirmed a significant reduction in the toxicity of intermediates generated during the photocatalytic process in the environment. Detailed analysis of the mechanism behind the enhanced photocatalytic activity is provided in this study. This research offers a novel approach for the in situ construction of heterojunction interfaces with efficient charge transfer capabilities.

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“…1 TC exposure can cause toxic effects on organisms, such as developmental toxicity 2 and genotoxicity. 3 It is reported that the concentration of TC in medical wastewater can reach 0.66 mmol L −1 . 4 In view of the growing contradiction between medical needs and eco-environmental protection, it is urgent to remove the existing TC in medical wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…As a widely used antibiotic drug (the second commonest in the world), tetracycline (TC) has high chemical stability, and is difficult to metabolize and easy to bio‐accumulate 1 . TC exposure can cause toxic effects on organisms, such as developmental toxicity 2 and genotoxicity 3 . It is reported that the concentration of TC in medical wastewater can reach 0.66 mmol L −1 4 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a novel MMK/β‐CD‐A material and its tetracycline removal efficiency

Guo

Liu

Jin

et al. 2023

J of Chemical Tech & Biotech

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Background: As one of the modal antibiotics in life, the abuse of tetracycline (TC) caused great risks to the ecological environment and health. Cost-effective removal method of TC in the medical wastewater was a developmental research direction with great potential.Results: In this work, a novel material, modified kaolin/β-cyclodextrin (β-CD) coated A (A is a special oxidant made from our laboratory, which is mainly composed of potassium ferrate) was synthesized and characterized. Meanwhile, the removal efficiencies and influencing factors of TC in novel material activation reaction systems were systematically studied. The specific surface area of modified kaolin (MMK) can reach up to 431.82 m 2 /g after acid and calcination modification. The results of SEM, TEM, XRD, and FT-IR showed the significant increase in specific surface area of MMK was the complete destruction of kaolin structure and the leaching of aluminum. β-CD was selected to coat A to attenuate the rapid release of A in water. The optimal coat molar ratio of β-CD and A was 10: 1 (β-CD:A). MMK/β-CD-A was used to treat the simulated TC wastewater, the removal efficiency was 95.6 % within 90 min when the concentration of TC was 0.22 mmol/L. The removal mechanism of TC with MMK/β-CD-A was the adsorption effect from MMK and the oxidation effect from β-CD-A. Conclusion:This work could provide useful information for developing a simple and effective technology to treat TC in medical wastewater.

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Construction of layered embedding dual Z-Scheme Bi2O2CO3/g-C3N4/Bi2O3: Tetracycline degradation pathway, toxicity analysis and mechanism insight

Cited by 36 publications

References 67 publications

In₂O₃ Nanoparticle/Bi₄O₅Br₂ Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

In₂O₃ Nanoparticle/Bi₄O₅Br₂ Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

BiOBr/Bi₂O₂CO₃ Heterojunction Photocatalyst for the Degradation of Tetracycline

Synthesis of a novel MMK/β‐CD‐A material and its tetracycline removal efficiency

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Construction of layered embedding dual Z-Scheme Bi2O2CO3/g-C3N4/Bi2O3: Tetracycline degradation pathway, toxicity analysis and mechanism insight

Cited by 36 publications

References 67 publications

In2O3 Nanoparticle/Bi4O5Br2 Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

In2O3 Nanoparticle/Bi4O5Br2 Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

BiOBr/Bi2O2CO3 Heterojunction Photocatalyst for the Degradation of Tetracycline

Synthesis of a novel MMK/β‐CD‐A material and its tetracycline removal efficiency

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In₂O₃ Nanoparticle/Bi₄O₅Br₂ Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

In₂O₃ Nanoparticle/Bi₄O₅Br₂ Nanosheet S-Scheme Heterojunctions with Interfacial Oxygen Vacancies for Photocatalytic Degradation of Tetracycline

BiOBr/Bi₂O₂CO₃ Heterojunction Photocatalyst for the Degradation of Tetracycline