Permeability of micelles in surfactant-containing MCM-41 silica as monitored by embedded dye molecules.
Mesoporosu (MCM-41 type) silica containing surfactant-embedded Congo Red has been prepared and tested against gas phase HCl and ammonia, as well as solutions of ionic species; it is shown that the hybrid (organic-inorganic) material is permeable to both gases and ionic species, and can act as a pH indicator and as a selective chelating agent.
Onida
B
B
Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy.
Bonelli
B
B
Flora
L
L
Geobaldo
F
F
Arean
C O
CO
Garrone
E
E