Evaluation of the impact of photodegradation processes on the environmental persistence of amoxicillin

Rocha, Hugo F.; Silva, Valentina; Lima, Diana L.D.; Calisto, Vânia

doi:10.1016/j.cscee.2024.100724

Case Studies in Chemical and Environmental Engineering

2024

DOI: 10.1016/j.cscee.2024.100724

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Evaluation of the impact of photodegradation processes on the environmental persistence of amoxicillin

Hugo F. Rocha,

Valentina Silva,

Diana L.D. Lima

et al.

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Cited by 3 publications

References 43 publications

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Synergistic magnetic field effect to enhance photocatalytic effect for pharmaceutics degradation by Ti3C2 MXene/GQDs@ZnO

Nugroho,

Joo,

Cho

et al. 2025

Journal of Photochemistry and Photobiology A: Chemistry

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Synergistic magnetic field effect to enhance photocatalytic effect for pharmaceutics degradation by Ti3C2 MXene/GQDs@ZnO

Nugroho,

Joo,

Cho

et al. 2025

Journal of Photochemistry and Photobiology A: Chemistry

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Synthesis of Fe2O3/TiO2 Photocatalytic Composites for Methylene Blue Degradation as a Novel Strategy for High-Value Utilisation of Iron Scales

Liu,

Cui,

Feng

et al. 2024

Materials

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In this study, novel Fe2O3/TiO2 photocatalytic composites were synthesised by combining traditional oxidation roasting with the sol-gel method, using low-cost metallurgical waste (iron scales) as the raw material. The characterisation results revealed that the oxidised iron scales could be transformed into high-purity and porous Fe2O3 particles through oxidation roasting, thereby providing additional sites for the adsorption process and thus serving as an effective carrier for TiO2-based photocatalytic materials. During the sol-gel process, TiO2 was loaded onto the synthesised Fe2O3 particles, generating core-shell heterostructure Fe2O3/TiO2 photocatalytic composites. Under visible light irradiation for 90 min, the Fe2O3/TiO2 photocatalytic composites achieved a remarkable methylene blue removal rate (97.71%). This reaction process followed the quasi-first-order kinetic model with a rate constant of 0.038 min−1. The results have demonstrated that this combination of various components in the Fe2O3/TiO2 photocatalytic composites improved the adsorption, light utilisation, and charge separation effect of the photocatalysts. Moreover, the material exhibited favourable stability and recyclability, making it a decent candidate for the treatment of wastewater from the biochemical industry. Therefore, this study provides a new strategy for improving the photocatalytic activity of TiO2 and expanding the high value-added utilisation of iron scales.

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Electrospun Nanofiber Dopped with TiO2 and Carbon Quantum Dots for the Photocatalytic Degradation of Antibiotics

Silva,

Lima,

de Matos Gomes

et al. 2024

Polymers

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Novel photocatalysts were synthesized through the association of carbon quantum dots (CQDs) with commercial (P25) titanium dioxide (TiO2) by sonication. The resulting TiO2/CQDs composite was then incorporated into the polyamide 66 (PA66) biopolymer nanofibers using the electrospinning technique, considering a composite nanoparticles-to-polymer ratio of 1:2 in the electrospinning precursor solution. The produced nanofibers presented suitable morphology and were tested for the photocatalytic degradation under simulated solar radiation of 10 mg L−1 of amoxicillin (AMX) and sulfadiazine (SDZ), in phosphate buffer solution (pH 8.06) and river water, using 1.5 g L−1 of photocatalyst. The presence of the photocatalyst increased the removal of AMX in phosphate buffer solution by 30 times, reducing the AMX degradation half-life time from 62 ± 1 h (without catalyst) to 1.98 ± 0.06 h. Moreover, SDZ degradation half-life time in phosphate buffer solution was reduced from 5.4 ± 0.1 h (without catalyst) to 1.87 ± 0.05 h in the presence of the photocatalyst. Furthermore, the PA66/TiO2/CQDs were also efficient in river water samples and maintained their performance in at least three cycles of SDZ photodegradation in river water. The presented results evidence that the produced photocatalyst can be a promising and sustainable solution for antibiotics’ efficient removal from water.

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Evaluation of the impact of photodegradation processes on the environmental persistence of amoxicillin

Cited by 3 publications

References 43 publications

Synergistic magnetic field effect to enhance photocatalytic effect for pharmaceutics degradation by Ti3C2 MXene/GQDs@ZnO

Synergistic magnetic field effect to enhance photocatalytic effect for pharmaceutics degradation by Ti3C2 MXene/GQDs@ZnO

Synthesis of Fe2O3/TiO2 Photocatalytic Composites for Methylene Blue Degradation as a Novel Strategy for High-Value Utilisation of Iron Scales

Electrospun Nanofiber Dopped with TiO2 and Carbon Quantum Dots for the Photocatalytic Degradation of Antibiotics

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