Fabrication and characterization of a Bi2O3-modified chitosan@ZIF-8 nanocomposite for enhanced drug loading-releasing efficacy

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 263, P. 130295 - 130295

Published: Feb. 19, 2024

Language: Английский

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Optimizing the efficient removal of ibuprofen from water environment by magnetic carbon aerogel: kinetics, isotherms, and thermodynamic studies

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 408, P. 125337 - 125337

Published: June 22, 2024

Language: Английский

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Collaborative adsorption and photocatalytic degradation of high concentration pharmaceutical pollutants in water using a novel dendritic fibrous nano-silica modified with chitosan and UiO-66

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 275, P. 133534 - 133534

Published: June 29, 2024

This study presents a novel hybrid mesoporous material for degrading drug pollutants in water. The materials, derived from UiO-66 metal-organic framework and chitosan, coated on nano-silica, showed excellent adsorption through hydrogen-bonding interactions efficient photodegradation of antibiotics. material's enhanced conductivity reduced band gap significantly improved pollution reduction by minimising electron-hole recombination. allows more charge transport better light absorption, boosting the ability to break down pollutants. Structural morphological analyses were conducted using various techniques, including scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, transmission Brunauer-Emmett-Teller analysis, photoelectron thermogravimetric analysis. Optimising adsorption-photodegradation process involved investigating pH, catalyst dose, radiation time. Non-linear optimisation revealed an efficiency exceeding 85 % 400 mg/L tetracycline doxycycline, model optimal parameters maximal elimination determined as pH = 4.3, mesosphere dose 4.0 mg/mL, time 10 min. Kinetic studies favored pseudo-second-order diffusion models over pseudo-first-order models. sustained after three cycles performed well real aqueous samples, removing 80 each antibiotic. demonstrates potential pharmaceutical water systems.

Language: Английский

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

Industrial & Engineering Chemistry Research, Journal Year: 2023, Volume and Issue: 62(39), P. 15940 - 15952

Published: Sept. 20, 2023

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

Language: Английский

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Machine Learning Assisted Imprinted Ag@PANI/CoFe2O4/C Heterojunction with Simultaneous Improvement of Selectivity and Activity for Antibiotic Photodegradation

Water Air & Soil Pollution, Journal Year: 2024, Volume and Issue: 235(11)

Published: Sept. 26, 2024

Language: Английский

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