Development of New Functional Dense and Porous Materials from Opal Glass Cullet Through Mild Alkali Activation. - Carollo, Francesco; De Rienzo, Emanuele; D'Angelo, Antonio; Barbieri, Luisa; Leonelli, Cristina; Lancellotti, Isabella; Catauro, Michelina; Bernardo, Enrico (Applied Sciences (2076-3417), 2026)