3D hierarchical H2-reduced Mn-doped CeO2 microflowers assembled from nanotubes as a high-performance Fenton-like photocatalyst for tetracycline antibiotics degradation

Wang, Anqi; Zheng, Zhikeng; Wang, Hui; Chen, Yu‐Wen; Luo, Cheng-Hui; Liang, Dingjun; Hu, Bowen; Qiu, Rongliang; Yan, Kai

doi:10.1016/j.apcatb.2020.119171

Cited by 280 publications

(72 citation statements)

References 62 publications

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“…Besides, ·OH also contributed in a certain way to the degradation of BPA. The existence of ·OH and ·

was further confirmed using the ESR technique with DMPO as the spin trap (Wang et al, 2020a ). As shown in Figure 9 , the characteristic peaks of DMPO-·OH and DMPO-·

are obviously detected under simulated sunlight irradiation, while no signal is found in the dark.…”

Section: Resultsmentioning

confidence: 94%

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Wang

Kang

Yang

et al. 2021

Front. Bioeng. Biotechnol.

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Bisphenol A (BPA) produced from biomass is a typical endocrine disrupting compound that is carcinogenic and genotoxic and can be accumulated in water due to its extensive use and difficult degradation. In this study, the porous ZnO photocatalyst with core-shell structure and large surface area was successfully developed for the efficient photocatalytic degradation of BPA. The various effects of calcination temperatures, BPA concentrations, ZnO dosages, pH and inorganic ions on the degradation performance were systemically studied. The results showed that 99% degradation of BPA was achieved in 1 h using the porous ZnO calcined at 550°C under the conditions of 30 mg/L BPA, 1 g/L ZnO, and pH of 6.5. Besides, the inhibition effects of anions for the photocatalytic removal of BPA decreased in the order of H2PO4- > HCO3- > SO42- > Cl−, while the cations K+, Ca2+, and Na+ had little effect on the photocatalytic degradation of BPA. The results of scavenging experiments showed that h+, ·O2-, and e− played the key role in the photocatalytic degradation process. Finally, the main pathways of BPA degradation were proposed based on ten intermediates found in the degradation process. This work may provide a good guideline to degrade various endocrine disrupting compounds in wastewater treatment.

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“…Besides, ·OH also contributed in a certain way to the degradation of BPA. The existence of ·OH and ·

was further confirmed using the ESR technique with DMPO as the spin trap (Wang et al, 2020a ). As shown in Figure 9 , the characteristic peaks of DMPO-·OH and DMPO-·

are obviously detected under simulated sunlight irradiation, while no signal is found in the dark.…”

Section: Resultsmentioning

confidence: 94%

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Wang

Kang

Yang

et al. 2021

Front. Bioeng. Biotechnol.

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“…Based on previous related reports and analysis results, three possible degradation pathways were presented in Figure 4 . The typical functional groups of double bond, phenolic group and amine group in TCH were possess high electron density, which were easily attacked by the active species [ 38 , 39 ]. For pathway 1: the transformation (m/z = 445) from TCH to intermediate product (m/z = 433) was started by dealkylation reaction under the h + attack.…”

Section: Resultsmentioning

confidence: 99%

“…For pathway 1: the transformation (m/z = 445) from TCH to intermediate product (m/z = 433) was started by dealkylation reaction under the h + attack. Then, the product (m/z = 346) was resulted from the deamination reaction [ 39 , 40 ]. For pathway II: the intermediate product (m/z = 427) could be attributed to the loss of hydroxyl groups.…”

Section: Resultsmentioning

confidence: 99%

“…Then, the intermediate product further transformed into product (m/z = 433) by dehydration and product (m/z =352) via oxidation. As the photocatalytic degradation proceeding, these intermediates were further oxidized to low molecular weight organics through a series of dissociating functional groups and ring opening processes, including m/z = 257, 246, 242, 184 [ 39 ]. Finally, the above-mentioned products were mineralized into harmless inorganic substances, which completely destroyed the TCH structure.…”

Section: Resultsmentioning

confidence: 99%

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Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Jiang

Huang

Wei³

et al. 2021

Nanomaterials

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The rational design of direct Z-scheme heterostructural photocatalysts using solar energy is promising for energy conversion and environmental remediation, which depends on the precise regulation of redox active sites, rapid spatial separation and transport of photoexcited charge and a broad visible light response. The Bi2WO6 materials have been paid more and more attention because of their unique photochemical properties. In this study, S2− doped Bi2WO6-x coupled with twin crystal ZnIn2S4 nanosheets (Sov−BWO/T−ZIS) were prepared as an efficient photocatalyst by a simple hydrothermal method for the removal of tetracycline hydrochloride (TCH). Multiple methods (XRD, TEM, XPS, EPR, UV vis DRS, PL etc.) were employed to systematically investigate the morphology, structure, composition and photochemical properties of the as-prepared samples. The XRD spectrum indicated that the S2− ions were successfully doped into the Sov−BWO component. XPS spectra and photoelectrochemical analysis proved that S2− served as electronic bridge and promoted captured electrons of surface oxygen vacancies transfer to the valence band of T−ZIS. Through both experimental and in situ electron paramagnetic resonance (in situ EPR) characterizations, a defined direct Z-scheme heterojunction in S-BWO/T−ZIS was confirmed. The improved photocatalytic capability of S-BWO/T−ZIS results ascribed that broadened wavelength range of light absorption, rapid separation and interfacial transport of photoexcited charge, precisely regulated redox centers by optimizing the interfacial transport mode. Particularly, the Sov−50BWO/T−ZIS Z-scheme heterojunction exhibited the highest photodegradation rate was 95% under visible light irradiation. Moreover, this heterojunction exhibited a robust adsorption and degradation capacity, providing a promising photocatalyst for an organic pollutant synergistic removal strategy.

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“…Therefore, it is significant to explore an effective antibiotics removal technology for environmental and ecological health. Over the past few decades, scientists have conducted extensive research on advanced oxidation process (AOP) to remove contaminants, including ozonation, photocatalysis, Fenton reaction, sono-hybrid advanced oxidation process, non-thermal plasma, and other combination technologies (Chakma & Moholkar 2016;Hama Aziz et al 2017;Wang et al 2020;Chauhan et al 2021;Guo et al 2021). Due to the advantages of effective degradation, simple operation, and low cost, these technologies are expected to be an alternative strategy for some traditional wastewater treatment methods (Chakma & Moholkar 2016;Hama Aziz 2019;Ren et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of tetracycline by Phosphorus-doped carbon nitride tube combined with peroxydisulfate under visible light irradiation

Zheng

Chen

Gao

et al. 2021

Water Science and Technology

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Photocatalysis has been regarded as a kind of environmentally friendly advanced oxidation process to eliminate pollutants. In this work, Phosphorus-doped carbon nitride tube (PCN) was synthesized via a hydrothermal calcination method and applied to degrade tetracycline (TC) through combing with peroxydisulfate (PDS) under visible light irradiation. Experimental results showed that the optimized catalysts PCN-5 exhibited superior degradation performance and reusability for TC degradation. 96.4% TC could be degraded for optimal PCN-5 with 0.3 g·L−1 catalysts and 1.0 g·L−1 PDS under visible light within 60 min. In addition, the degradation rate constant for TC of PCN + PDS + Vis system was still above 85% after five uses. Radical trapping experiment indicating that O2·− is the dominant radical for TC degradation. The findings of this work revealed the potential application of the PCN + PDS + Vis system toward degrading contaminants in wastewater.

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3D hierarchical H2-reduced Mn-doped CeO2 microflowers assembled from nanotubes as a high-performance Fenton-like photocatalyst for tetracycline antibiotics degradation

Cited by 280 publications

References 62 publications

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Photocatalytic degradation of tetracycline by Phosphorus-doped carbon nitride tube combined with peroxydisulfate under visible light irradiation

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