Applications of periodate activation for emerging contaminants treatment in water: Activation methods, reaction parameters and mechanism

Environmental Research, Journal Year: 2025, Volume and Issue: 271, P. 121088 - 121088

Published: Feb. 10, 2025

Language: Английский

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MXene-based composite photocatalysts for efficient degradation of antibiotics in wastewater

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Dec. 28, 2024

Abstract MXene-based (nano)materials have recently emerged as promising solutions for antibiotic photodegradation from aquatic environments, yet they are limited by scalability, stability, and selectivity challenges in practical settings. We formulated Fe 2 O 3 -SiO /MXene ternary nano-photocomposites via coupled wet impregnation sonochemistry approach optimised tetracycline (TC) removal (the second most used worldwide) water using response surface methodology-central composite design (RSM-CCD). The photocatalysts containing various loading of /SiO (5–45 wt%) on the MXene with a range calcination temperatures (300–600 °C) RSM optimisation were synthesised, characterised regarding crystallinity properties, morphology, binding energy, light absorption capability, analysed TC degradation efficiency. 25FeS/MX-450 among all samples demonstrated superior efficiency photocatalytic (98%) under conditions (TC degradation: 39.75 mg/L, time: 68.28 min, pH: 5.57, catalyst dosage: 0.75 g/L). developed area, reduced band gap due to FeS nanoparticles incorporation improved within visible spectrum, played crucial role heterostructure matrix, enhancing photogenerated carriers’ separation transportation capabilities. photoreduction mechanism involved electron transfer MXene, engaging produce •O −, attributed high mobility MXene. Our findings such materials can underscore considerable potential nanomaterials pharmaceutical waterways.

Language: Английский

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Visible light assisted periodate activation with porous C3N5 for tetracycline degradation: Enhanced electron-hole separation and reactive oxygen species formation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155739 - 155739

Published: Sept. 1, 2024

Language: Английский

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Understanding the variations in degradation pathways and generated by-products of antibiotics in modified TiO2 and ZnO photodegradation systems: A comprehensive review

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 370, P. 122402 - 122402

Published: Sept. 6, 2024

Language: Английский

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UV activated peroxymonosulfate synergistically removes Microcystis aeruginosa and Chlorella vulgaris

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 115379 - 115379

Published: Jan. 8, 2025

Language: Английский

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An S-Scheme MOF-on-MXene Heterostructure for Enhanced Photocatalytic Periodate Activation

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Fully understanding the periodate (PI) activation system is still a great challenge, which calls for efficient heterogeneous catalysts with sophisticated structure. Herein, we developed "MOF-on-MXene" heterostructures. By constructing S-scheme heterostructures MXene/Z67450, internal electric field generated via Ti-O-Co bonds at interface, favoring excitation of photogenerated electrons, providing driving force accelerating charge transfer, and enhancing redox performances. Further contributed by synergy Co-N4 bonds, MXene/Z67450 composites exhibit enhanced ability activating to degrade organic pollutants building donor-catalyst-acceptor system. In presence light, degraded ∼100% tetracycline hydrochloride (TCH) in only 10 min. The active sites can react give intermediate MXene/Z67450-PI (*PI). As result, it efficiently reduced PI adsorption energy promoted decomposition formation holes/electrons, singlet oxygen (1O2) as well hydroxyl radical (•OH). addition, high stability, reusability, selectivity, environmental robustness. Our study provides research direction rationally designing MXene-based heterojunctions applying them

Language: Английский

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Degradation of levofloxacin using electro coagulation residuals-alginate beads as a novel heterogeneous electro-fenton composite

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 359, P. 120972 - 120972

Published: April 27, 2024

Language: Английский

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Persulfate assisted photocatalytic and antibacterial activity of TiO2–CuO coupled with graphene oxide and reduced graphene oxide

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: May 31, 2024

Abstract Photocatalysts of TiO 2 –CuO coupled with 30% graphene oxide (GO) were hydrothermally fabricated, which varied the to CuO weight ratios 1:4, 1:2, 1:1, 2:1 and 4:1 reduced form –CuO/reduced (rGO) photocatalysts. They characterized using XRD, TEM, SEM, XPS, Raman, DRS technologies. composites –CuO/GO degrade methylene blue when persulfate ions are present. Persulfate concentration ranged from 1, 2, 4 8 mmol/dm −3 in highest activity 4.4 × 10 –2 7.35 min −1 was obtained for (1:4) (1:1), respectively. The presence EDTA isopropyl alcohol photodegradation. rGO coagulates such coagulation is independent light. catalyst dosage dye best-performing samples. antibacterial synthesized samples evaluated against growth Escherichia coli , Staphylococcus aureus Pseudomonas aeruginosa Klebsiella pneumonia . Ti:Cu (1:2)-GO (1:4)-GO had K pneumoniae (16.08 ± 0.14 mm), P (22.33 0.58 E (16.17 0.29 mm) S 0.88).

Language: Английский

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Novel nanostructure approach for antibiotic decomposition in a spinning disc photocatalytic reactor

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: May 8, 2024

Abstract Conventional wastewater treatment processes are often unable to remove antibiotics with resistant compounds and low biological degradation. The need for advanced sustainable technologies from water sources seems essential. In this regard, the effectiveness of a spinning disc photocatalytic reactor (SDPR) equipped visible light-activated Fe 3 O 4 @SiO 2 -NH @CuO/ZnO core–shell (FSNCZ CS) thin film photocatalyst was investigated decomposition amoxicillin (AMX), representative antibiotic. Various characterization techniques, such as TEM, FESEM, EDX, AFM, XRD, UV–Vis-DRS, were employed study surface morphology, optoelectronic properties, nanostructure FSNCZ CS. Key operating parameters irradiation time, pH, initial AMX concentration, rotational speed, solution flow rate fine-tuned optimization. results indicated that highest (98.7%) attained under optimal conditions 60 min speed 350 rpm, 0.9 L/min, pH 5, an concentration 20 mg/L. Moreover, during more than 69.95% chemical oxygen demand 61.2% total organic carbon removed. After AMX, there is substantial increase in average oxidation state SDPR 1.33 1.94 3.2, respectively. Active species tests confirmed ·OH ·O − played dominant role decomposition. developed SDPR, which incorporates reusable robust CS photocatalyst, demonstrates promising potential compounds.

Language: Английский

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Chemically engineered CoO -doped flower-like NiO nanoparticles for photodegradation of Bisphenol A and Orange II Dye, and genetic screening of toxicity via Caenorhaditis elegans

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113677 - 113677

Published: July 31, 2024

Language: Английский

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