Development of inverse opal titania films for efficient photocatalysis
Efficient light harvesting is considered a promising approach towards the commercialization of heterogeneous photocatalysis. Accordingly, photonic crystals might be a perfect example, but their fabrication might be challenging. In this study, inverse opal titania (IOT) films were fabricated via a co...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-08-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S266652392500114X |
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| author | Lei Wang Marcin Kobielusz Zuzanna Bielan Ewa Kowalska |
| author_facet | Lei Wang Marcin Kobielusz Zuzanna Bielan Ewa Kowalska |
| author_sort | Lei Wang |
| collection | DOAJ |
| description | Efficient light harvesting is considered a promising approach towards the commercialization of heterogeneous photocatalysis. Accordingly, photonic crystals might be a perfect example, but their fabrication might be challenging. In this study, inverse opal titania (IOT) films were fabricated via a co-assembly approach using a titania mixture sol containing both amorphous and crystalline titania. This method enables the preparation of highly ordered, crack-minimized structures by optimizing synthesis parameters. The obtained films were characterized by various methods (XRD, SEM, UV/vis) and tested towards photocatalytic generation of hydroxyl radicals (via hydroxylation of terephthalic acid). It has been found that both film thickness and crack-free morphology are decisive for photocatalytic performance. Interestingly, the irradiation angle influences not only optical properties (photonic bandgap (PBG) wavelength) but also overall photocatalytic activity. It has been found that 20° is the best angle of irradiation, at which additional bands are formed, corresponding to intrinsic photoabsorption by titania. Moreover, it is proposed that by simple change in irradiation angle, photonic properties could be tuned, allowing both photocatalytic activity enhancement and mechanism investigations. |
| format | Article |
| id | doaj-art-86f54e7cdd5a45f1936a4333752dea2d |
| institution | Kabale University |
| issn | 2666-5239 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj-art-86f54e7cdd5a45f1936a4333752dea2d2025-08-20T03:36:52ZengElsevierApplied Surface Science Advances2666-52392025-08-012810080610.1016/j.apsadv.2025.100806Development of inverse opal titania films for efficient photocatalysisLei Wang0Marcin Kobielusz1Zuzanna Bielan2Ewa Kowalska3Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków 30-387, PolandCorresponding authors.; Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków 30-387, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków 30-387, PolandCorresponding authors.; Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków 30-387, PolandEfficient light harvesting is considered a promising approach towards the commercialization of heterogeneous photocatalysis. Accordingly, photonic crystals might be a perfect example, but their fabrication might be challenging. In this study, inverse opal titania (IOT) films were fabricated via a co-assembly approach using a titania mixture sol containing both amorphous and crystalline titania. This method enables the preparation of highly ordered, crack-minimized structures by optimizing synthesis parameters. The obtained films were characterized by various methods (XRD, SEM, UV/vis) and tested towards photocatalytic generation of hydroxyl radicals (via hydroxylation of terephthalic acid). It has been found that both film thickness and crack-free morphology are decisive for photocatalytic performance. Interestingly, the irradiation angle influences not only optical properties (photonic bandgap (PBG) wavelength) but also overall photocatalytic activity. It has been found that 20° is the best angle of irradiation, at which additional bands are formed, corresponding to intrinsic photoabsorption by titania. Moreover, it is proposed that by simple change in irradiation angle, photonic properties could be tuned, allowing both photocatalytic activity enhancement and mechanism investigations.http://www.sciencedirect.com/science/article/pii/S266652392500114XInverse opalTitaniaCo-assemblyHydroxyl radicalsLight harvestingHeterogeneous photocatalysis |
| spellingShingle | Lei Wang Marcin Kobielusz Zuzanna Bielan Ewa Kowalska Development of inverse opal titania films for efficient photocatalysis Applied Surface Science Advances Inverse opal Titania Co-assembly Hydroxyl radicals Light harvesting Heterogeneous photocatalysis |
| title | Development of inverse opal titania films for efficient photocatalysis |
| title_full | Development of inverse opal titania films for efficient photocatalysis |
| title_fullStr | Development of inverse opal titania films for efficient photocatalysis |
| title_full_unstemmed | Development of inverse opal titania films for efficient photocatalysis |
| title_short | Development of inverse opal titania films for efficient photocatalysis |
| title_sort | development of inverse opal titania films for efficient photocatalysis |
| topic | Inverse opal Titania Co-assembly Hydroxyl radicals Light harvesting Heterogeneous photocatalysis |
| url | http://www.sciencedirect.com/science/article/pii/S266652392500114X |
| work_keys_str_mv | AT leiwang developmentofinverseopaltitaniafilmsforefficientphotocatalysis AT marcinkobielusz developmentofinverseopaltitaniafilmsforefficientphotocatalysis AT zuzannabielan developmentofinverseopaltitaniafilmsforefficientphotocatalysis AT ewakowalska developmentofinverseopaltitaniafilmsforefficientphotocatalysis |