New insights into the initial steps of the formation of SBA-15 materials: an in situ small angle neutron scattering investigation.
Time-resolved in situ SANS investigations have provided direct experimental evidence for the three initial steps in the formation of the SBA-15 mesoporous material: an induction period is followed by a shape transformation of the micelles from spherical to cylindrical ones followed by the precipitation of a two-dimensional hexagonal phase.
Impéror-Clerc
Marianne
M
Laboratoire de Physique de Solides, UMR 8502, Bât. 510, Université Paris-Sud, 91405 Orsay Cedex, France. imperor@lps.u-psud.fr
Grillo
Isabelle
I
Khodakov
Andrei Y
AY
Durand
Dominique
D
Zholobenko
Vladimir L
VL
D004578:Electron Spin Resonance Spectroscopy; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D046529:Microscopy, Electron, Transmission; D008968:Molecular Conformation; D008970:Molecular Weight; D009502:Neutrons; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014965:X-Rays
D007202:Indicators and Reagents; D008823:Micelles; C509969:SBA-15; D012822:Silicon Dioxide