01871nas a2200241   4500008004100000022001400041245012500055210006900180260000800249300001400257490000800271520104600279100001801325700002901343700001701372700001901389700001601408700002101424700001801445700001601463700002301479856012701502       2025                        eng d  a1520-610600aInsights into the Chemical Durability and Structure of ZnO-Incorporated Sodium Borosilicate Glasses from Solid-State NMR0 aInsights into the Chemical Durability and Structure of ZnOIncorp  cJUL  a7349-73600 v1293 a<p>
	ZnO-incorporated NBS glasses have been studied for their application as a matrix for nuclear waste immobilization. However, structural factors affecting chemical durability have not been established. In this study, the structural changes in NBSZn glasses across various Na2O/(B2O3 + ZnO) ratios are explored using multinuclear MAS, MQMAS NMR, and EXAFS techniques. The Na MAS and MQMAS studies reveal remarkable changes in the Na environment after ZnO incorporation, which leads to an increase in chemical durability. Based on the results from NMR and EXAFS, we rationalized the structure of this glass in terms of the modified random network (MRN) model. The glass network comprises a highly polymerized region and alkali percolation channels bordered by nonbridging oxygens from the depolymerized regions. The constriction of these percolation channels increases the chemical durability of the glass. Our findings will help in the advancement of Zn-containing NBS glasses as a promising matrix for nuclear waste immobilization.</p>
1 aIllath, Kavya1 aAnanthanarayanan, Arvind1 aBanerjee, D.1 aMishra, R., K.1 aKumar, Ravi1 aBhattacharya, D.1 aKumar, Sanjay1 aManohar, S.1 aAjithkumar, T., G.  uhttps://library.ncl.res.in/content/insights-chemical-durability-and-structure-zno-incorporated-sodium-borosilicate-glasses