Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation
ZnO thin films on glass substrates and silicon wafers were prepared by the sol-gel dipcoating technique and annealed at temperatures ranging from 300 - 550 °C. X-ray diffraction (XRD) and Raman analysis confirm the hexagonal wurtzite structure of ZnO. Scanning electron microscopy (SEM) examination c...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539524001913 |
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| author | A.H. Haritha M.E. Cruz O. Sisman A. Duran D. Galusek J.J. Velázquez Y. Castro |
| author_facet | A.H. Haritha M.E. Cruz O. Sisman A. Duran D. Galusek J.J. Velázquez Y. Castro |
| author_sort | A.H. Haritha |
| collection | DOAJ |
| description | ZnO thin films on glass substrates and silicon wafers were prepared by the sol-gel dipcoating technique and annealed at temperatures ranging from 300 - 550 °C. X-ray diffraction (XRD) and Raman analysis confirm the hexagonal wurtzite structure of ZnO. Scanning electron microscopy (SEM) examination confirmed that the films were homogeneous, crack-free and with a uniform distribution of nano-sized spherical grains. The decomposition of methyl orange (MO) using a solar simulator was used to determine the photocatalytic activity of the thin films. The annealing temperature was found to have a significant influence on the structure, morphology, and photocatalytic performance of ZnO thin films. The best photocatalytic activity under solar irradiation was shown by the ZnO thin film annealed at 450 °C. The enhanced photocatalytic performance of the films can be attributed to their optimized crystallinity, surface roughness and morphology, which provide more active sites for the photocatalytic reactions. |
| format | Article |
| id | doaj-art-d7d2ce3d4da74ac893e2cdd64a6a9545 |
| institution | OA Journals |
| issn | 2666-5395 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj-art-d7d2ce3d4da74ac893e2cdd64a6a95452025-08-20T02:07:20ZengElsevierOpen Ceramics2666-53952025-03-012110072710.1016/j.oceram.2024.100727Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradationA.H. Haritha0M.E. Cruz1O. Sisman2A. Duran3D. Galusek4J.J. Velázquez5Y. Castro6FunGlass, Alexander Dubček University of Trenčín, Trenčín, Slovakia; Instituto de Cerámica y Vidrio (CSIC), Madrid, SpainInstituto de Cerámica y Vidrio (CSIC), Madrid, SpainFunGlass, Alexander Dubček University of Trenčín, Trenčín, SlovakiaInstituto de Cerámica y Vidrio (CSIC), Madrid, SpainFunGlass, Alexander Dubček University of Trenčín, Trenčín, Slovakia; Joint Glass Centre of the IIC SAS, TnUAD,nd FChPT STU, Trenčín, SlovakiaFunGlass, Alexander Dubček University of Trenčín, Trenčín, SlovakiaInstituto de Cerámica y Vidrio (CSIC), Madrid, Spain; Corresponding author.ZnO thin films on glass substrates and silicon wafers were prepared by the sol-gel dipcoating technique and annealed at temperatures ranging from 300 - 550 °C. X-ray diffraction (XRD) and Raman analysis confirm the hexagonal wurtzite structure of ZnO. Scanning electron microscopy (SEM) examination confirmed that the films were homogeneous, crack-free and with a uniform distribution of nano-sized spherical grains. The decomposition of methyl orange (MO) using a solar simulator was used to determine the photocatalytic activity of the thin films. The annealing temperature was found to have a significant influence on the structure, morphology, and photocatalytic performance of ZnO thin films. The best photocatalytic activity under solar irradiation was shown by the ZnO thin film annealed at 450 °C. The enhanced photocatalytic performance of the films can be attributed to their optimized crystallinity, surface roughness and morphology, which provide more active sites for the photocatalytic reactions.http://www.sciencedirect.com/science/article/pii/S2666539524001913Sol-gelZnOThin filmsPhotocatalyticMethyl orange |
| spellingShingle | A.H. Haritha M.E. Cruz O. Sisman A. Duran D. Galusek J.J. Velázquez Y. Castro Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation Open Ceramics Sol-gel ZnO Thin films Photocatalytic Methyl orange |
| title | Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation |
| title_full | Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation |
| title_fullStr | Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation |
| title_full_unstemmed | Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation |
| title_short | Influence of annealing temperature on the photocatalytic efficiency of sol-gel dip-coated ZnO thin films in methyl orange degradation |
| title_sort | influence of annealing temperature on the photocatalytic efficiency of sol gel dip coated zno thin films in methyl orange degradation |
| topic | Sol-gel ZnO Thin films Photocatalytic Methyl orange |
| url | http://www.sciencedirect.com/science/article/pii/S2666539524001913 |
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