Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation
For a nanocomposite, the interaction among nanoparticles (NPs) and the polymeric matrix acting as support has a determinant role in the performance of the material in its intended application. Two UV-sensitive NPs (TiO2 and ZnO) were chosen in order to study the effect of their interaction with chit...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2022-11-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0011888&mi=cd |
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| author | Jonás José Perez Bravo María Emilia Villanueva Gabriel Ibrahin Tovar Nora Judit François Guillermo Javier Copello |
| author_facet | Jonás José Perez Bravo María Emilia Villanueva Gabriel Ibrahin Tovar Nora Judit François Guillermo Javier Copello |
| author_sort | Jonás José Perez Bravo |
| collection | DOAJ |
| description | For a nanocomposite, the interaction among nanoparticles (NPs) and the polymeric matrix acting as support has a determinant role in the performance of the material in its intended application. Two UV-sensitive NPs (TiO2 and ZnO) were chosen in order to study the effect of their interaction with chitin in the photocatalytic degradation of trimethoprim, which is an emerging pollutant. Chitin-NPs composites were characterized by structural, thermal, optical, and photoelectrochemical techniques. NPs immobilization into the chitin matrix showed to affect both NPs in the same manner by influencing their photocurrent generation and decreasing the bandgap, which allowed taking advantage of the Visible-light spectrum. Trimethoprim degradation rates under simulated sunlight and chitin chemical stability upon reusability were evaluated. Both composites can be used over a wide range of pH, but the alkaline medium produced a decrease in the chitin:ZnO degradation efficiency. The chemical structure of chitin was not affected by the photocatalysis reaction, even after several cycles. As it was observed for the nude NPs, the chitin:TiO2 composite trimethoprim degradation efficiency was higher than the chitin:ZnO nanocomposite. Chitin matrix allowed an easy recovery of the NPs from the treatment medium and recycling of the material without loss of photocatalytic efficiency. |
| format | Article |
| id | doaj-art-ef2454f8d163442f8b2f3056460a3439 |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2022-11-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-ef2454f8d163442f8b2f3056460a34392025-08-20T03:22:42ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2022-11-0116111177119210.3144/expresspolymlett.2022.86Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradationJonás José Perez BravoMaría Emilia VillanuevaGabriel Ibrahin TovarNora Judit FrançoisGuillermo Javier CopelloFor a nanocomposite, the interaction among nanoparticles (NPs) and the polymeric matrix acting as support has a determinant role in the performance of the material in its intended application. Two UV-sensitive NPs (TiO2 and ZnO) were chosen in order to study the effect of their interaction with chitin in the photocatalytic degradation of trimethoprim, which is an emerging pollutant. Chitin-NPs composites were characterized by structural, thermal, optical, and photoelectrochemical techniques. NPs immobilization into the chitin matrix showed to affect both NPs in the same manner by influencing their photocurrent generation and decreasing the bandgap, which allowed taking advantage of the Visible-light spectrum. Trimethoprim degradation rates under simulated sunlight and chitin chemical stability upon reusability were evaluated. Both composites can be used over a wide range of pH, but the alkaline medium produced a decrease in the chitin:ZnO degradation efficiency. The chemical structure of chitin was not affected by the photocatalysis reaction, even after several cycles. As it was observed for the nude NPs, the chitin:TiO2 composite trimethoprim degradation efficiency was higher than the chitin:ZnO nanocomposite. Chitin matrix allowed an easy recovery of the NPs from the treatment medium and recycling of the material without loss of photocatalytic efficiency.http://www.expresspolymlett.com/letolt.php?file=EPL-0011888&mi=cdnanocompositeschitinphotocatalytic degradationtrimethoprimemerging pollutant |
| spellingShingle | Jonás José Perez Bravo María Emilia Villanueva Gabriel Ibrahin Tovar Nora Judit François Guillermo Javier Copello Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation eXPRESS Polymer Letters nanocomposites chitin photocatalytic degradation trimethoprim emerging pollutant |
| title | Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation |
| title_full | Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation |
| title_fullStr | Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation |
| title_full_unstemmed | Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation |
| title_short | Visible-light enhanced photocatalytic performance by lowering the bandgap of reusable TiO2/chitin and ZnO/chitin nanocomposites for trimethoprim degradation |
| title_sort | visible light enhanced photocatalytic performance by lowering the bandgap of reusable tio2 chitin and zno chitin nanocomposites for trimethoprim degradation |
| topic | nanocomposites chitin photocatalytic degradation trimethoprim emerging pollutant |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0011888&mi=cd |
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