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The Influence of Glass Composition on Iodine Solubility

Published online by Cambridge University Press:  02 January 2019

Maria Rita Cicconi Open the ORCID record for Maria Rita Cicconi [Opens in a new window] ,
Eric Pili ,
Lucie Grousset  and
Daniel R. Neuville
Maria Rita Cicconi*
Affiliation:
Institut de Physique du Globe de Paris, Géomatériaux, CNRS-UMR7154, Sorbonne Paris Cité, 1 rue Jussieu 75005 Paris cedex 05, France
Eric Pili
Affiliation:
CEA, DAM, DIF, F-91297 Arpajon, France
Lucie Grousset
Affiliation:
Institut de Physique du Globe de Paris, Géomatériaux, CNRS-UMR7154, Sorbonne Paris Cité, 1 rue Jussieu 75005 Paris cedex 05, France
Daniel R. Neuville
Affiliation:
Institut de Physique du Globe de Paris, Géomatériaux, CNRS-UMR7154, Sorbonne Paris Cité, 1 rue Jussieu 75005 Paris cedex 05, France
*
*(Email: cicconi@ipgp.fr)
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Abstract

Two glass series in the ternary systems K2O-B2O3-SiO2 (KBS) and Na2O-B2O3-SiO2 (NBS) were studied in order to identify the main factors influencing the solubility of iodine. We established that iodine incorporation is strongly linked to the bulk chemistry, i.e. the SiO2/(B2O3+SiO2) molar ratio, and to the physical properties of the glasses, and we assessed three different solubility limits. Iodine in Si-rich glasses has a low solubility (≤1 mol% I) regardless of the alkali ion present. On the contrary, in B-rich glasses, the solubility is five times higher than in Si-rich glasses for Na-glasses, and more than six times higher for K-glasses. The strong dependence of iodine solubility on the bulk chemistry is related to the adaptability of the glass network. Furthermore, our data suggest that iodine is stable with different redox states in the glasses here analyzed.

Keywords

glassRaman spectroscopydifferential thermal analysis (DTA)hot isostatic pressing (HIP)
Type
Articles
Information
MRS Advances , Volume 4 , Issue 17-18: Energy-Transfer, Storage and Conversion , 2019 , pp. 971 - 979
Copyright
Copyright © Materials Research Society 2018 

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