Surfactant solubilization and the direct encapsulation of interfacially active phenols in mesoporous silicas.
The solubilization of phenols in micelles of cetyltrimethyl ammonium bromide leads to microstructural changes from spherical micelles to wormlike micelles and then to vesicles. These microstructures are then used to template silicas. There is a transition from highly ordered hexagonal mesoporous silicas of the M41S family to lamellar structures, as the phenolic dopant concentration is increased. The results have implication to the removal of phenols from aqueous waste streams through the micellar enhanced ultrafiltration process. The entrapment of phenols in mesoporous silicas provides a way to sequester such contaminants in concentrated form.
Tan
Grace
G
Department of Chemical and Biomolecular Engineering, Coordinated Instrumentation Facility, Tulane University, New Orleans, Louisiana 70118, USA.
Ford
Christy
C
John
Vijay T
VT
He
Jibao
J
McPherson
Gary L
GL
Bose
Arijit
A