Preparation and Antibacterial Performance Study of CeO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Nanocomposite Materials
In response to the challenges of food spoilage and water pollution caused by pathogenic microorganisms, CeO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites were synthesized via one-step calcination using thiourea and urea as precursors. Steady-state photol...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/29/23/5557 |
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| Summary: | In response to the challenges of food spoilage and water pollution caused by pathogenic microorganisms, CeO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites were synthesized via one-step calcination using thiourea and urea as precursors. Steady-state photoluminescence (PL) spectroscopy analysis demonstrated that 8 wt% CeO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> exhibited superior electron–hole separation efficiency. Quantitative antimicrobial assays demonstrated that the nanocomposites displayed enhanced bactericidal activity against <i>Escherichia coli</i>, <i>Ralstonia solanacearum</i>, and <i>Staphylococcus aureus</i>. Electron paramagnetic resonance (EPR) spectroscopy analysis verified the generation of hydroxyl radicals (·OH) and superoxide radicals (·O<sub>2</sub><sup>−</sup>) during the photo-Fenton process utilizing CeO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites. Additionally, 8 wt% CeO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites demonstrated enhanced photocatalytic degradation of rhodamine B (RhB) and tetracycline hydrochloride (TC) under photo-Fenton conditions. |
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| ISSN: | 1420-3049 |