Carbon quantum dots decorated heteroatom co-doped core-shell Fe0@POCN for degradation of tetracycline via multiply synergistic mechanisms

Peng, Xiaoming; Luo, Wendong; Wu, Jianqun; Hu, Fengping; Hu, Yuying; Xu, Lihua; Xu, Gaoping; Jian, Yan; Hirata, Dai

doi:10.1016/j.chemosphere.2020.128806

Cited by 23 publications

(6 citation statements)

References 49 publications

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“…Antibiotics are one of the most emergent pollutants in natural aqueous environments worldwide due to the increased antibiotic abuse, resulting from the increased demand of the pharmaceuticals and the rapid development of the drug and medical industry (Akhil et al 2021 ; Kumar et al 2021 ; Madhura et al 2018 ; Shi et al 2019 ; Wei et al 2020 ; Yang et al 2021b ). Tetracycline, one of the highly effective broad-spectrum prescribed antibiotics, is extensively used in the therapeutic treatment, and livestock and poultry industry (Daghrir and Drogui 2013 ; Peng et al 2021 ; Zheng et al 2021 ). Nevertheless, tetracycline gets into the environment through urine and feces since it is incompletely absorbed in the body and has poor metabolic transformation (Barhoumi et al 2017 ; Guo et al 2019a ).…”

Section: Introductionmentioning

confidence: 99%

“…Light-activated semiconductor-based photocatalysis represents the most promising green and eco-friendly technique for wastewater treatment (Liu et al 2019a ; López et al 2021 ; Saravanan et al 2020 ). It has received a lot of attention due to its high efficiency, low-cost, and outstanding stability (Peng et al 2021 ; Zhou et al 2019 ). Electrons (e − ) and holes (h + ) are generated under light irradiation and migrate to the surface of photocatalyst (López et al 2021 ; Soni et al 2021 ), inducing redox reactions and forming of reactive oxygen species, such as superoxide radical (O 2 · − ), singlet oxygen ( 1 O 2 ), hydroxyl radical (OH · ), hydroperoxyl radical (HOO · ), and hydroperoxide (H 2 O 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

2021

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Antibiotic pollution is a major health issue inducing antibiotic resistance and the inefficiency of actual drugs, thus calling for improved methods to clean water and wastewater. Here we review the recent development of heterojunction photocatalysis and application in degrading tetracycline. We discuss mechanisms for separating photogenerated electron–hole pairs in different heterojunction systems such as traditional, p–n, direct Z-scheme, step-scheme, Schottky, and surface heterojunction. Degradation pathways of tetracycline during photocatalysis are presented. We compare the efficiency of tetracycline removal by various heterojunctions using quantum efficiency, space time yield, and figures of merit. Implications for the treatment of antibiotic-contaminated wastewater are discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

2021

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“…This might be due to the reaction of S 2 O 8 2− with electrons to produce •SO 4 − , which then reacted with water to form more •OH (Equations 3-5). [57][58][59] In Figure 10c − production (Equations 6 and 7). [52] As illustrated in Figure 10d and Figure S5 (Supporting Information), in the absence of PS, both with and without light generated very little 1 O 2 , while in the presence of PS, a significant signal of 1 O 2 could be observed.…”

Section: Mechanism Analysismentioning

confidence: 99%

Spherical Bi₄O₅I₂/MoS₂ QDs Nanocomposites Activate Persulfate to Degrade Tetracycline Under Visible Light

Zhang,

Huang,

Zheng

et al. 2023

Advanced Sustainable Systems

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Photocatalytic activation of persulfate is considered to be a promising purification technology. In this study, a novel nanospherical composite material is synthesized by loading MoS2 Quantum Dots on Bi4O5I2. MoS2 Quantum Dots enhance the activity of the composite material and separation efficiency of electrons and holes. Meanwhile the composite material demonstrates a strong photocurrent response by optoelectronic analysis. In addition, the light absorption range is further expanded. Based on the improvement of photoelectric properties and light absorption performance, the BM0.5%/PS/Vis system exhibits the most excellent performance with a degradation rate of 69.7% for tetracycline within 60 min. The degradation mechanism is verified through free radical capture experiments, the radicals involve in degradation are ·OH, ·SO4−, ·O2− and 1O2. The possible degradation pathway of tetracycline is proposed by liquid chromatography‐mass spectrometry (LC‐MS). This work is expected to provide a research direction for the application of modified bismuth halide in PS activation.

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“…The photocatalysis reaction involves the absorption of photons with energy greater than that of the semiconductor band gap. This process produces electron-hole pairs, which then migrate to the surface to form active substances [9], such as •O 2 − , •OH, etc. This may lead to two main bottlenecks.…”

Section: Introductionmentioning

confidence: 99%

MOF-Derived Spindle-Shaped Z-Scheme ZnO/ZnFe2O4 Heterojunction: A Magnetic Recovery Catalyst for Efficient Photothermal Degradation of Tetracycline Hydrochloride

Suo,

Ma,

Zhang

et al. 2023

Materials

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The development of photocatalysts with a wide spectral response and effective carrier separation capability is essential for the green degradation of tetracycline hydrochloride. In this study, a magnetic recyclable Z-scheme ZnO/ZnFe2O4 heterojunction (ZZF) was successfully constructed via the solid phase method, using MIL-88A(Fe)@Zn as the precursor. An appropriate band gap width and Z-scheme charge transfer mechanism provide ZZF with excellent visible light absorption performance, efficient charge separation, and a strong redox ability. Under visible light irradiation, the degradation efficiency of tetracycline hydrochloride for the optimal sample can reach 86.3% within 75 min in deionized water and 92.9% within 60 min in tap water, exhibiting superior stability and reusability after five cycles. Moreover, the catalyst in the water can be conveniently recovered by magnetic force. After visible light irradiation for 70 min, the temperature of the reaction system increased by 21.9 °C. Its degradation constant (35.53 × 10−3 min−1) increased to 5.1 times that at room temperature (6.95 × 10−3 min−1). Using thermal energy enhances the kinetic driving force of the reactants and facilitates carrier migration, meaning that more charge is available for the production of •O2− and •OH. This study provides a potential candidate for the efficient degradation of tetracycline hydrochloride by combining thermal catalysis with a photocatalytic heterojunction.

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Carbon quantum dots decorated heteroatom co-doped core-shell Fe0@POCN for degradation of tetracycline via multiply synergistic mechanisms

Cited by 23 publications

References 49 publications

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

Spherical Bi₄O₅I₂/MoS₂ QDs Nanocomposites Activate Persulfate to Degrade Tetracycline Under Visible Light

MOF-Derived Spindle-Shaped Z-Scheme ZnO/ZnFe2O4 Heterojunction: A Magnetic Recovery Catalyst for Efficient Photothermal Degradation of Tetracycline Hydrochloride

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Carbon quantum dots decorated heteroatom co-doped core-shell Fe0@POCN for degradation of tetracycline via multiply synergistic mechanisms

Cited by 23 publications

References 49 publications

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

Spherical Bi4O5I2/MoS2 QDs Nanocomposites Activate Persulfate to Degrade Tetracycline Under Visible Light

MOF-Derived Spindle-Shaped Z-Scheme ZnO/ZnFe2O4 Heterojunction: A Magnetic Recovery Catalyst for Efficient Photothermal Degradation of Tetracycline Hydrochloride

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Spherical Bi₄O₅I₂/MoS₂ QDs Nanocomposites Activate Persulfate to Degrade Tetracycline Under Visible Light