The photocatalytic approach is known to be one of the most promising advanced oxidation processes for the tertiary treatment of polluted water. In this paper, β-NaYF4/TiO2 composite films have been synthetized through a novel sol–gel/spin-coating approach using a mixture of β-diketonate complexes of Na and Y, and Yb3+, Tm3+, Gd3+, Eu3+ as doping ions, together with the TiO2 P25 nanoparticles. The herein pioneering approach represents an easy, straightforward and industrially appealing method for the fabrication of doped β-NaYF4/TiO2 composites. The effect of the doped β-NaYF4 phase on the photocatalytic activity of TiO2 for the degradation of methylene blue (MB) has been deeply investigated. In particular, the upconverting TiO2/β-NaYF4: 20%Yb, 2% Gd, x% Tm (x = 0.5 and 1%) and the downshifting TiO2/β-NaYF4: 10% Eu composite films have been tested on MB degradation both under UV and visible light irradiation. An improvement up to 42.4% in the degradation of MB has been observed for the TiO2/β-NaYF4: 10% Eu system after 240 min of UV irradiation.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:91541 |
| Date | 04 June 2024 |
| Creators | Pennisi, Fabiana M., Pellegrino, Anna L., Licciardello, Nadia, Mezzalira, Claudia, Sgarzi, Massimo, Speghini, Adolfo, Malandrino, Graziella, Cuniberti, Gianaurelio |
| Publisher | Macmillan Publishers Limited, part of Springer Nature |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 2045-2322, 13748, 10.1038/s41598-022-17256-2, info:eu-repo/grantAgreement/European Union/H2020 | MSCA-RISE/734381//Immune activity Mapping of Carbon Nanomaterials/CARBO-IMmap |
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