Publicação
Surface modification of ZnO quantum dots coated polylactic acid knitted fabric for photocatalytic application
| Resumo: | In this work, ZnO quantum dots (ZnOQD) were synthesized by Sol–gel synthe- sis and impregnated on polylactic acid (PLA) knitted fabric through self- assembly of different cycles from layer-by-layer (LBL) using cationic agent Poly(diallydimethylammonium chloride) (PDDA). Then, morphological, chemi- cal and photocatalytic properties were studied. The results demonstrate that the synthesis provided 8 nm Wurtzite-type ZnO nanoparticles. In addition, X-ray photoelectron spectroscopy (XPS) spectra, X-ray diffraction (XRD) and scanning electron microscopy (SEM) proved the inclusion of ZnOQD on the surface of PLA matrix, which allowed the evaluation of its photocatalytic properties, there- fore, coated PLA with five cycles of ZnOQD obtained the best result for degrading 85% of the dye Rhodamine B (RhB) in 360 min under UV radiation, in addition to its reusability for another five cycles of photocatalytic activity. |
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| Autores principais: | Cabral, Rivaldo Leonn Bezerra |
| Outros Autores: | Galvão, Felipe Mendonça Fontes; Souto Silva, Kesia Karina Oliveira; Felipe, Brenno Henrique Silva; Andrade Neto, Nivaldo Freire; Almeida Fechine, Pierre Basílio; Zille, Andrea; Kim, Suyeon; Nascimento, José Heriberto Oliveira |
| Assunto: | Layer-by-layer Nanoparticles Photocatalytic, Polylactic acid Quantum dots ZnO Textile |
| Ano: | 2022 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | In this work, ZnO quantum dots (ZnOQD) were synthesized by Sol–gel synthe- sis and impregnated on polylactic acid (PLA) knitted fabric through self- assembly of different cycles from layer-by-layer (LBL) using cationic agent Poly(diallydimethylammonium chloride) (PDDA). Then, morphological, chemi- cal and photocatalytic properties were studied. The results demonstrate that the synthesis provided 8 nm Wurtzite-type ZnO nanoparticles. In addition, X-ray photoelectron spectroscopy (XPS) spectra, X-ray diffraction (XRD) and scanning electron microscopy (SEM) proved the inclusion of ZnOQD on the surface of PLA matrix, which allowed the evaluation of its photocatalytic properties, there- fore, coated PLA with five cycles of ZnOQD obtained the best result for degrading 85% of the dye Rhodamine B (RhB) in 360 min under UV radiation, in addition to its reusability for another five cycles of photocatalytic activity. |
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