8 research outputs found
Anodic alumina-mesoporous silica hybrid membranes: a systematic study of alumina filling
Mesostructure of Mesoporous Silica/Anodic Alumina Hierarchical Membranes Tuned with Ethanol
Mesostructure of Mesoporous Silica/Anodic Alumina Hierarchical Membranes Tuned with Ethanol
Hierarchically structured
membranes composed of mesoporous silica
embedded inside the channels of anodic alumina (MS-AAM) were synthesized
using the aspiration method. Ethanol is shown to have a significant
effect on the type and organization of the mesoporous silica phase.
Detailed textural analysis revealed that the pore size distribution
of the mesoporous silica narrows and the degree of ordering increases
with decreasing ethanol concentration used in the synthesis mixture.
The silica mesopores were synthesized with pores as small as 6 nm
in diameter, with the channel direction oriented in lamellar, circular,
and columnar directions depending on the ethanol content. This study
reveals ethanol concentration as a key factor behind the synthesis
of an ordered mesoporous silica–anodic alumina membrane that
can increase its functionality for membrane-based applications