The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel
Europium (Eu)-doped silica nanoparticles have attracted great interest for different applications, in particular in biomedicine as biosensors or for tissue regeneration. Sol-gel is the most common process used to prepare those particles, with size varying from tens to hundreds of nanometers. In this...
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MDPI AG
2021-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/7/1607 |
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| author | Hussein Fneich Nathalie Gaumer Stéphane Chaussedent Ahmad Mehdi Wilfried Blanc |
| author_facet | Hussein Fneich Nathalie Gaumer Stéphane Chaussedent Ahmad Mehdi Wilfried Blanc |
| author_sort | Hussein Fneich |
| collection | DOAJ |
| description | Europium (Eu)-doped silica nanoparticles have attracted great interest for different applications, in particular in biomedicine as biosensors or for tissue regeneration. Sol-gel is the most common process used to prepare those particles, with size varying from tens to hundreds of nanometers. In this article, we focus our attention on the comparison between two commonly used sol-gel derived methods: reverse microemulsion (for particles smaller than 100 nm) and Stöber method (for particles larger than 100 nm). Europium concentration was varied between 0.2 and 1 mol%, and the nanoparticle diameters were 10, 50 and 100 nm. The link between the local environment of europium ions and their optical properties was investigated and discussed. Using Transmission Electron Microscopy, nitrogen sorption, X-ray diffraction, Fourier-Transform Infra-Red and pulsed doubled Nd:YAG laser, we confirmed that fluorescence lifetime was improved by thermal treatment at 900 °C due to the elimination of aqueous environment and modification of structure disorder. The size of nanoparticles, the amount of europium and the thermal treatment of obtained materials influence the emission spectra and the decay curves of Eu<sup>3+</sup>. |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T12:54:32Z |
| publishDate | 2021-03-01 |
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| spelling | doaj.art-bd811913868444888d3f4497abde71a12023-11-21T12:01:53ZengMDPI AGMaterials1996-19442021-03-01147160710.3390/ma14071607The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-GelHussein Fneich0Nathalie Gaumer1Stéphane Chaussedent2Ahmad Mehdi3Wilfried Blanc4ICGM, CNRS, ENSCM, University Montpellier, 34095 Montpellier, FranceLPHIA, SFR MATRIX, University of Angers, 49000 Angers, FranceLPHIA, SFR MATRIX, University of Angers, 49000 Angers, FranceICGM, CNRS, ENSCM, University Montpellier, 34095 Montpellier, FranceINPHYNY, Université Côte d’Azur, CNRS UMR 7010, Parc Valrose, 06108 Nice, FranceEuropium (Eu)-doped silica nanoparticles have attracted great interest for different applications, in particular in biomedicine as biosensors or for tissue regeneration. Sol-gel is the most common process used to prepare those particles, with size varying from tens to hundreds of nanometers. In this article, we focus our attention on the comparison between two commonly used sol-gel derived methods: reverse microemulsion (for particles smaller than 100 nm) and Stöber method (for particles larger than 100 nm). Europium concentration was varied between 0.2 and 1 mol%, and the nanoparticle diameters were 10, 50 and 100 nm. The link between the local environment of europium ions and their optical properties was investigated and discussed. Using Transmission Electron Microscopy, nitrogen sorption, X-ray diffraction, Fourier-Transform Infra-Red and pulsed doubled Nd:YAG laser, we confirmed that fluorescence lifetime was improved by thermal treatment at 900 °C due to the elimination of aqueous environment and modification of structure disorder. The size of nanoparticles, the amount of europium and the thermal treatment of obtained materials influence the emission spectra and the decay curves of Eu<sup>3+</sup>.https://www.mdpi.com/1996-1944/14/7/1607luminescent materialssilica nanoparticlesrare-earth ionseuropiumsol-gelphotoluminescence |
| spellingShingle | Hussein Fneich Nathalie Gaumer Stéphane Chaussedent Ahmad Mehdi Wilfried Blanc The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel Materials luminescent materials silica nanoparticles rare-earth ions europium sol-gel photoluminescence |
| title | The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel |
| title_full | The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel |
| title_fullStr | The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel |
| title_full_unstemmed | The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel |
| title_short | The Effect of Size and Thermal Treatment on the Photoluminescent Properties of Europium-Doped SiO<sub>2</sub> Nanoparticles Prepared in One Pot by Sol-Gel |
| title_sort | effect of size and thermal treatment on the photoluminescent properties of europium doped sio sub 2 sub nanoparticles prepared in one pot by sol gel |
| topic | luminescent materials silica nanoparticles rare-earth ions europium sol-gel photoluminescence |
| url | https://www.mdpi.com/1996-1944/14/7/1607 |
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