Sunlight-Activated Nanocomposites for Antibiotic Degradation: How NiFe₂O₄@TiO₂@Au Tackles Tigecycline and Its Biotoxicity

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 105889 - 105889

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhanced Luminescence and Photocatalytic Activity in Highly Inverted Spinel ZnGa₂O₄ Nanoplates

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Zinc gallate (ZnGa2O4) has recently emerged as a promising wide-band-gap material for light-emitting and power electronic devices. This study investigates the impact of cation site inversion on luminescence photocatalytic properties ZnGa2O4. High-quality nanoplates ZnGa2O4 with pure spinel phase, lateral dimensions up to 10 μm, thicknesses around 40 nm are synthesized via hydrothermal reaction. Photoemission Raman spectroscopies reveal significant inversion, where Ga3+ ions occupy tetrahedral sites (GaZn) Zn2+ octahedral (ZnGa), forming antisite defects. The parameters measured 0.36 ± 0.04 GaZn 0.25 0.02 ZnGa. exhibit stable, bright broad-band featuring an ultraviolet (UV) band at 3.2 eV associated self-trapped holes three visible bands attributed Furthermore, demonstrate superior efficiency in degrading Rhodamine B (RhB) under A (UVA) irradiation compared Ga2O3. Band structure analysis reveals strong tail states extending valence conduction edges Ga2O3, reducing gap 3.9 eV, facilitating hydroxyl radical production enhanced photocatalysis.

Язык: Английский

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Engineering a ZnO/Ag₂CO₃/Ag₂O Ternary Heterojunction: Dual Z-Scheme Photocatalytic Pathway for Enhanced Pollutants Degradation

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

As the widespread discharge of antibiotics, pesticides, and dyes exacerbates water pollution, development efficient photocatalytic materials has become crucial for addressing this challenge. In study, a new paradigm n-p-p ternary heterojunction photocatalyst composed ZnO nanospindle, Ag2CO3, Ag2O nanoparticles was synthesized via hydrothermal coprecipitation method followed by calcination. By adjusting calcination time, phase transition from Ag2CO3 to precisely controlled, leading enhanced charge separation, transition, improved light absorption properties. The prepared ZnO/Ag2CO3/Ag2O (Z/AC/A) exhibited outstanding performance degradation typical pollutants, including 2,4-dichlorophenol (2,4-D), tetracycline (TC), malachite green (MG) under simulated sunlight irradiation. And efficiencies reached 90.8, 94.8, 97.4%, respectively, with photocatalyst, which calcined at 195 °C 12 min, abbreviated as Z/AC/A-3, demonstrating highest activity. Radical scavenging experiments electron spin resonance (ESR) tests revealed that superoxide radicals (•O2-) serve dominant active species, while holes (h+) hydroxyl (•OH) play secondary roles in process. Additionally, mechanism confirmed follow dual Z-scheme transfer pathway, effectively separation performance. also excellent structural stability reusability over five consecutive cycles. These results suggest Z/AC/A holds promising potential practical applications environmental remediation.

Язык: Английский

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Bamboo-Derived Carbon Supported Plasmonic Ag Nanoparticles for Visible-Light-Driven Photocatalytic Degradation of Tetracycline

Опубликована: Янв. 1, 2025

Язык: Английский

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