Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications
In the present study the development of novel polymer-supported nanocomposite graphene oxide (GO)–TiO<sub>2</sub> films, based on poly(L-lactic acid), one of the most exploited bioplastics worldwide, was explored for photocatalytic applications. The nanocomposites were synthesized and ev...
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MDPI AG
2020-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/7/2368 |
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| author | Neda Malesic Eleftheriadou Anna Ofrydopoulou Myrsini Papageorgiou Dimitra Lambropoulou |
| author_facet | Neda Malesic Eleftheriadou Anna Ofrydopoulou Myrsini Papageorgiou Dimitra Lambropoulou |
| author_sort | Neda Malesic Eleftheriadou |
| collection | DOAJ |
| description | In the present study the development of novel polymer-supported nanocomposite graphene oxide (GO)–TiO<sub>2</sub> films, based on poly(L-lactic acid), one of the most exploited bioplastics worldwide, was explored for photocatalytic applications. The nanocomposites were synthesized and evaluated as photocatalysts for the removal of a mixture of nine antibiotics, consisting of two sulphonamides (sulfamethoxazole, sulfadiazine), three fluoroquinolones (levofloxacin, norfloxacin, moxifloxacin), one anti-TB agent (isoniazid), one nitroimidazole (metronidazole), one lincosamide (lincomycin) and one diaminopyrimidine (trimethoprim), which are commonly found in wastewaters. The films were synthesized using 1 wt% GO and different TiO<sub>2</sub> content (10, 25, and 50 wt%) and characterized using Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray diffraction (WAXD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Findings confirmed the successful immobilization of GO/TiO<sub>2</sub> in all cases. The PLLA–GO–TiO<sub>2</sub> 50 wt% composite film demonstrated higher photocatalytic efficiency and, thus, was further investigated demonstrating excellent photostability and reusability even after four cycles. Overall, PLLA–GO–TiO<sub>2</sub> 50 wt% nanocomposite demonstrated high efficiency in the photocatalytic degradation of the antibiotics in various matrices including pure water and wastewater. |
| first_indexed | 2024-03-10T20:48:04Z |
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| id | doaj.art-a2417b7372ae43c49d9292ab476665c7 |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T20:48:04Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a2417b7372ae43c49d9292ab476665c72023-11-19T20:11:07ZengMDPI AGApplied Sciences2076-34172020-03-01107236810.3390/app10072368Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic ApplicationsNeda Malesic Eleftheriadou0Anna Ofrydopoulou1Myrsini Papageorgiou2Dimitra Lambropoulou3Laboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, GR–541 24 Thessaloniki, GreeceLaboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, GR–541 24 Thessaloniki, GreeceLaboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, GR–541 24 Thessaloniki, GreeceLaboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, GR–541 24 Thessaloniki, GreeceIn the present study the development of novel polymer-supported nanocomposite graphene oxide (GO)–TiO<sub>2</sub> films, based on poly(L-lactic acid), one of the most exploited bioplastics worldwide, was explored for photocatalytic applications. The nanocomposites were synthesized and evaluated as photocatalysts for the removal of a mixture of nine antibiotics, consisting of two sulphonamides (sulfamethoxazole, sulfadiazine), three fluoroquinolones (levofloxacin, norfloxacin, moxifloxacin), one anti-TB agent (isoniazid), one nitroimidazole (metronidazole), one lincosamide (lincomycin) and one diaminopyrimidine (trimethoprim), which are commonly found in wastewaters. The films were synthesized using 1 wt% GO and different TiO<sub>2</sub> content (10, 25, and 50 wt%) and characterized using Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray diffraction (WAXD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Findings confirmed the successful immobilization of GO/TiO<sub>2</sub> in all cases. The PLLA–GO–TiO<sub>2</sub> 50 wt% composite film demonstrated higher photocatalytic efficiency and, thus, was further investigated demonstrating excellent photostability and reusability even after four cycles. Overall, PLLA–GO–TiO<sub>2</sub> 50 wt% nanocomposite demonstrated high efficiency in the photocatalytic degradation of the antibiotics in various matrices including pure water and wastewater.https://www.mdpi.com/2076-3417/10/7/2368antibioticsbioplasticsgraphene oxidenanocompositesphotocatalysispoly (L-lactic acid) |
| spellingShingle | Neda Malesic Eleftheriadou Anna Ofrydopoulou Myrsini Papageorgiou Dimitra Lambropoulou Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications Applied Sciences antibiotics bioplastics graphene oxide nanocomposites photocatalysis poly (L-lactic acid) |
| title | Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications |
| title_full | Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications |
| title_fullStr | Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications |
| title_full_unstemmed | Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications |
| title_short | Development of Novel Polymer Supported Nanocomposite GO/TiO<sub>2</sub> Films, Based on poly(L-lactic acid) for Photocatalytic Applications |
| title_sort | development of novel polymer supported nanocomposite go tio sub 2 sub films based on poly l lactic acid for photocatalytic applications |
| topic | antibiotics bioplastics graphene oxide nanocomposites photocatalysis poly (L-lactic acid) |
| url | https://www.mdpi.com/2076-3417/10/7/2368 |
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