Glass - Back to the Future!

Presenting Author:
Nadia Pellerin

article posted 06 April 2016

Nadia Pellerin has recognized skills in the glass science field. She investigates ordered (crystalline or glass-ceramic) and disordered (glassy) oxides using Solid-State NMR spectroscopy. Her major interest fields concern the glasses for nuclear waste storage, the glass durability (leaching conditions, irradiation) and the glass coloration from metallic nanoparticles crystallisation and their optical properties.

Relations between silver nano crystallization and glass structure in silicate matrices

Nadia Pellerin1*, Ahmed Bachar1, Alexandra Gorczyca2, Krzysztof Dzierzega2, Stéphane Pellerin3, Cécile Genevois1 and Jean-Philippe Blondeau1

Glasses containing noble metallic nanoparticles present a large interest taking into account the potential application field assigned to nonlinear optical properties. In this work, metallic (Au, Ag) nanoparticles are introduced in vitreous oxide matrices as silver nitrate (AgNO3) and gold chloride (AuCl) and crystallization parameters are optimized thanks to thermal annealing in reducing atmosphere or air (figure 1). The dispersed nanoparticles have been examined by Transmission Electron Microscopy (TEM) (figure 2), and the optical absorption spectroscopy has given rise to the Surface Plasmon Resonance at around 420 nm (550 nm) which is characteristic of silver (gold) nanoparticles (figure 3). The effects of vitreous matrix nature and the consequences of nanoparticle formation on the network have been analyzed by MAS NMR spectroscopy of 29Si, 11B and 23Na and discussed according to the polymerization degree of the network.

Figure 1: annealing temperature (left: before annealing to right : 600°C) (borosilicate glasses with 0.1% of Ag2O)

Figure 2 : TEM image (borosilicate glass with 0.2% of Ag2O)

Figure 3: absorbance spectra for different annealing conditions (borosilicate glasses with 0.1% of Ag2O)

1CEMHTI CNRS UPR3079, Université d’Orléans, 1D Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France.
2Institute of Physics Jagiellonian University, Lojasiewicza 11, 30-348 Kraków, Poland
3GREMI, Université d’Orléans/CNRS, 63 avenue de Lattre de Tassigny, F-18020 Bourges cedex, France