Synthesis and Characterization of Se<sup>4+</sup>@TiO<sub>2</sub>/PET Composite Photocatalysts with Enhanced Photocatalytic Activity by Simulated Solar Irradiation and Antibacterial Properties
To fabricate recyclable catalytic materials with high catalytic activity, Se<sup>4+</sup>@TiO<sub>2</sub> photocatalytic materials were synthesized by the sol–gel method. By introducing free radicals on the surface of polyester (PET) fabrics through plasma technology, Se<s...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/6/1306 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | To fabricate recyclable catalytic materials with high catalytic activity, Se<sup>4+</sup>@TiO<sub>2</sub> photocatalytic materials were synthesized by the sol–gel method. By introducing free radicals on the surface of polyester (PET) fabrics through plasma technology, Se<sup>4+</sup>@TiO<sub>2</sub>/PET composite photocatalytic materials with high photocatalytic activity were prepared. The surface morphology, crystal structure, chemical composition, and photocatalytic performance were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet–visible absorption spectroscopy (UV–Vis), and photoluminescence spectroscopy (PL), respectively. The photocatalytic degradation performance was determined by assessing the degradation of azo dye methyl orange under simulated solar irradiation. The results demonstrated that Se<sup>4+</sup>@TiO<sub>2</sub>/PET exhibited a superior degradation rate of methyl orange, reaching up to 81% under simulated sunlight. The PL spectra indicated that the electron–hole pair separation rate of Se<sup>4+</sup>@TiO<sub>2</sub>/PET was higher than that of TiO<sub>2</sub>/PET. Furthermore, UV–Vis spectroscopy demonstrated that the relative forbidden band gap of Se<sup>4+</sup>@TiO<sub>2</sub>/PET was determined to be 2.9 eV. The band gap of Se<sup>4+</sup>@TiO<sub>2</sub>/PET was narrower, and the absorption threshold shifted toward the visible region, indicating a possible increase in its catalytic activity in simulated solar irradiation. In addition, the antibacterial properties of Se<sup>4+</sup>@TiO<sub>2</sub>/PET were subsequently investigated, achieving 99.99% and 98.47% inhibition against <i>S. aureus</i> and <i>E. coli</i>, respectively. |
|---|---|
| ISSN: | 1420-3049 |