Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles
Mixed-phase titanium dioxide (TiO<sub>2</sub>) can be effectively employed as photoluminescence (PL) based ratiometric optical sensor of O<sub>2</sub>, thanks to its peculiar “anti-correlated” PL responses to O<sub>2</sub> of anatase and rutile TiO<sub>2<...
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MDPI AG
2024-04-01
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| author | Romina Rega Ambra Fioravanti Pietro Marani Sara Morandi Laura Giordano Stefano Lettieri Maria Cristina Carotta Pasquale Maddalena |
| author_facet | Romina Rega Ambra Fioravanti Pietro Marani Sara Morandi Laura Giordano Stefano Lettieri Maria Cristina Carotta Pasquale Maddalena |
| author_sort | Romina Rega |
| collection | DOAJ |
| description | Mixed-phase titanium dioxide (TiO<sub>2</sub>) can be effectively employed as photoluminescence (PL) based ratiometric optical sensor of O<sub>2</sub>, thanks to its peculiar “anti-correlated” PL responses to O<sub>2</sub> of anatase and rutile TiO<sub>2</sub> polymorphs. We discuss how to exploit the simultaneous detection of luminescence arising from anatase and rutile TiO<sub>2</sub> nanoparticles to obtain a responsivity which is, by construction, larger than the one obtainable through other gas-responsive oxides via the same PL-based approach. Furthermore, we illustrate our recent improvements on sensor sensitivity and stability for O<sub>2</sub> concentrations ranging in the 10–100 ppm interval. |
| format | Article |
| id | doaj-art-d623a14cf50349e39958b540ff263b72 |
| institution | Kabale University |
| issn | 2504-3900 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Proceedings |
| spelling | doaj-art-d623a14cf50349e39958b540ff263b722024-12-27T14:49:08ZengMDPI AGProceedings2504-39002024-04-0197119710.3390/proceedings2024097197Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> NanoparticlesRomina Rega0Ambra Fioravanti1Pietro Marani2Sara Morandi3Laura Giordano4Stefano Lettieri5Maria Cristina Carotta6Pasquale Maddalena7Institute for Applied Sciences and Intelligent Systems “E. Caianiello”, National Research Council (ISASI-CNR), Via Cupa Cintia 21, 80126 Napoli, ItalyInstitute of Sciences and Technologies for Sustainable Energy and Mobility, National Research Council (STEMS-CNR), Via Canal Bianco 28, 44124 Ferrara, ItalyInstitute of Sciences and Technologies for Sustainable Energy and Mobility, National Research Council (STEMS-CNR), Via Canal Bianco 28, 44124 Ferrara, ItalyDepartment of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, ItalyInstitute of Marine Sciences, National Research Council (ISMAR-CNR), Calata Porta di Massa, 80133 Naples, ItalyDepartment of Physics, Università degli Studi di Napoli Federico II, Via Cupa Cintia 21, 80126 Napoli, ItalyInstitute of Sciences and Technologies for Sustainable Energy and Mobility, National Research Council (STEMS-CNR), Via Canal Bianco 28, 44124 Ferrara, ItalyDepartment of Physics, Università degli Studi di Napoli Federico II, Via Cupa Cintia 21, 80126 Napoli, ItalyMixed-phase titanium dioxide (TiO<sub>2</sub>) can be effectively employed as photoluminescence (PL) based ratiometric optical sensor of O<sub>2</sub>, thanks to its peculiar “anti-correlated” PL responses to O<sub>2</sub> of anatase and rutile TiO<sub>2</sub> polymorphs. We discuss how to exploit the simultaneous detection of luminescence arising from anatase and rutile TiO<sub>2</sub> nanoparticles to obtain a responsivity which is, by construction, larger than the one obtainable through other gas-responsive oxides via the same PL-based approach. Furthermore, we illustrate our recent improvements on sensor sensitivity and stability for O<sub>2</sub> concentrations ranging in the 10–100 ppm interval.https://www.mdpi.com/2504-3900/97/1/197oxygen sensingoptical sensingdynamic/static photoluminescence quenchingtitanium dioxideanataserutile |
| spellingShingle | Romina Rega Ambra Fioravanti Pietro Marani Sara Morandi Laura Giordano Stefano Lettieri Maria Cristina Carotta Pasquale Maddalena Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles Proceedings oxygen sensing optical sensing dynamic/static photoluminescence quenching titanium dioxide anatase rutile |
| title | Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles |
| title_full | Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles |
| title_fullStr | Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles |
| title_full_unstemmed | Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles |
| title_short | Recent Improvements on Double-Parametric Optical Sensing of O<sub>2</sub> Exploiting Near-Infrared Luminescence of Mixed-Phase Anatase/Rutile TiO<sub>2</sub> Nanoparticles |
| title_sort | recent improvements on double parametric optical sensing of o sub 2 sub exploiting near infrared luminescence of mixed phase anatase rutile tio sub 2 sub nanoparticles |
| topic | oxygen sensing optical sensing dynamic/static photoluminescence quenching titanium dioxide anatase rutile |
| url | https://www.mdpi.com/2504-3900/97/1/197 |
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