Comparative Study on the Influence of Noble Metal Nanoparticles (Ag, Au, Pd) on the Photocatalytic Activity of ZnO NPs Embedded in Renewable Castor Oil Polymer Matrices
| Autor: | Daniel Timpu, Violeta Melinte, Andreea L. Chibac-Scutaru, Viorica E. Podasca |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Materials science Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences lcsh:Technology Article chemistry.chemical_compound Methyl orange castor oil General Materials Science Fourier transform infrared spectroscopy lcsh:Microscopy lcsh:QC120-168.85 Nanocomposite nanocomposite lcsh:QH201-278.5 lcsh:T nanoparticle 021001 nanoscience & nanotechnology 0104 chemical sciences Photopolymer chemistry Chemical engineering lcsh:TA1-2040 photopolymerization engineering Photocatalysis Noble metal lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) photocatalysis lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 3468, p 3468 (2020) Materials Volume 13 Issue 16 |
| ISSN: | 1996-1944 |
| Popis: | Hybrid polymeric materials, due to the unique combination of properties that can be obtained by the convenient variation of organic and inorganic components, represent an attractive alternative for many applications, especially photocatalysis. Herein, we report the preparation of nanocomposite films containing functionalized ZnO nanoparticles, as well as in situ photogenerated noble metal nanoparticles (Ag, Au, Pd), for the achieving of materials with enhanced photocatalytic activity under visible light. The flexible free-standing nanocomposite films were synthesized by photopolymerization of a monomer mixture (silane castor oil urethane dimethacrylate and polypropylene oxide urethane dimethacrylate) in the presence of a Irgacure 819 photoinitiator. The efficiency of ZnO NPs functionalization was established by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis, while the polymer composites were characterized by UV-Vis spectroscopy, X-ray diffraction, transmission electron microscopy and scanning electron microscopy to evidence the formation, size and distribution of the nanoparticles inside the photocrosslinked matrix. To establish the photocatalytic capacity of nanocomposite films, the decomposition of various pollutants (methyl orange, phenol, metronidazole) was monitored under visible light irradiation, the best results being obtained for Au/ZnO film. Also, the advantage of immobilizing the catalysts in a polymeric support and its recycling ability without a significant decrease in photocatalytic efficiency was analysed. |
| Databáze: | OpenAIRE |
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