Multifunctional TiO2/polyacrylonitrile nanofibers for high efficiency PM2.5 capture, UV filter, and anti-bacteria activity
| Autor: | Kuan Nien Chen, Fitri Nur Indah Sari, Jyh-Ming Ting |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Composite number General Physics and Astronomy UV filter 02 engineering and technology Bead 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Filtration Polyacrylonitrile Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrospinning 0104 chemical sciences Surfaces Coatings and Films chemistry Chemical engineering Filter (video) visual_art Nanofiber visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Applied Surface Science. 493:157-164 |
| ISSN: | 0169-4332 |
| Popis: | In this work we present a multifunctional filter having polyacrylonitrile (PAN) nanofibers with embedded commercial P25 and/or TiO 2 bead filler. The composite nanofibers were synthesized through a green method of electrospinning. The properties of the filters having single- and/or binary-filler composite fibers were investigated. It was found that TiO 2 beads have higher electrostatic attraction to capture PM2.5 than P25. Binary-filler nanofiber filter having a higher beads/P25 ratio shows an excellent filtration efficiency of 96.75% with a low pressure drop of 88 Pa. As a result, a high quality factor of 0.039 has been obtained. This is 177% enhancement as compared to the PAN-only filter. Furthermore, the composite filters also exhibit antibacterial activity of 5.5 under 30 min UV irradiation, which is 9 times higher than that of the PAN-only filter. These results indicate that PAN-based composite filter with commercial P25 and/or TiO 2 beads fillers is excellent material for making facial mask. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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