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In situ SAXS investigation of dual ordered mesoporous materials formation.

Schmitt, Julien LU ; Canilho, Nadia ; Impéror-Clerc, Marianne ; Blin, Jean-Luc ; Pedersen, Jan Skov ; Pérez, Javier ; Lebeau, Bénédicte ; Vidal, Loic and Stébé, Marie José (2015) In ChemPhysChem 16(17). p.3637-3641
Abstract
The formation of two-dimensional (2D)-hexagonal (p6m) silica-based hybrid material with a dual-mesoporosity is investigated in situ using synchrotron time-resolved Small Angle X-ray Scattering (SAXS). The material is synthesized from a mixed micellar solution of a nonionic fluorinated surfactant, RF₈(EO)₉, and a nonionic triblock copolymer, P123. Both mesoporosities, with pores dimensions at 3.3 and 8.5 nm respectively, are seen by Nitrogen sorption, TEM and SAXS. The in situ SAXS experiments reveal a mesophase formation in two steps. First the nucleation and growth of a primary 2D-hexagonal network (N1) associated to mixed micelles containing P123, then followed by the formation of the second network (N2) associated to micelles of pure... (More)
The formation of two-dimensional (2D)-hexagonal (p6m) silica-based hybrid material with a dual-mesoporosity is investigated in situ using synchrotron time-resolved Small Angle X-ray Scattering (SAXS). The material is synthesized from a mixed micellar solution of a nonionic fluorinated surfactant, RF₈(EO)₉, and a nonionic triblock copolymer, P123. Both mesoporosities, with pores dimensions at 3.3 and 8.5 nm respectively, are seen by Nitrogen sorption, TEM and SAXS. The in situ SAXS experiments reveal a mesophase formation in two steps. First the nucleation and growth of a primary 2D-hexagonal network (N1) associated to mixed micelles containing P123, then followed by the formation of the second network (N2) associated to micelles of pure RF₈(EO)₉. The data obtained from SAXS and TEM suggest that N1 is used as nucleation centers for the formation of N2, that would result in the formation of a grain with both mesoporosities. Understanding the formation mechanism of such material is an important step towards the synthesis of more complex materials with a fine tuning of the porosity. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ChemPhysChem
volume
16
issue
17
pages
3637 - 3641
publisher
John Wiley & Sons Inc.
external identifiers
  • pmid:26383498
  • wos:000367324700013
  • scopus:84954338630
  • pmid:26383498
ISSN
1439-7641
DOI
10.1002/cphc.201500642
language
English
LU publication?
yes
id
32f57299-b168-4ba2-ad15-7fc04f8cd0fc (old id 8035989)
date added to LUP
2016-04-01 10:56:44
date last changed
2022-01-26 03:57:12
@article{32f57299-b168-4ba2-ad15-7fc04f8cd0fc,
  abstract     = {{The formation of two-dimensional (2D)-hexagonal (p6m) silica-based hybrid material with a dual-mesoporosity is investigated in situ using synchrotron time-resolved Small Angle X-ray Scattering (SAXS). The material is synthesized from a mixed micellar solution of a nonionic fluorinated surfactant, RF₈(EO)₉, and a nonionic triblock copolymer, P123. Both mesoporosities, with pores dimensions at 3.3 and 8.5 nm respectively, are seen by Nitrogen sorption, TEM and SAXS. The in situ SAXS experiments reveal a mesophase formation in two steps. First the nucleation and growth of a primary 2D-hexagonal network (N1) associated to mixed micelles containing P123, then followed by the formation of the second network (N2) associated to micelles of pure RF₈(EO)₉. The data obtained from SAXS and TEM suggest that N1 is used as nucleation centers for the formation of N2, that would result in the formation of a grain with both mesoporosities. Understanding the formation mechanism of such material is an important step towards the synthesis of more complex materials with a fine tuning of the porosity.}},
  author       = {{Schmitt, Julien and Canilho, Nadia and Impéror-Clerc, Marianne and Blin, Jean-Luc and Pedersen, Jan Skov and Pérez, Javier and Lebeau, Bénédicte and Vidal, Loic and Stébé, Marie José}},
  issn         = {{1439-7641}},
  language     = {{eng}},
  number       = {{17}},
  pages        = {{3637--3641}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{ChemPhysChem}},
  title        = {{In situ SAXS investigation of dual ordered mesoporous materials formation.}},
  url          = {{http://dx.doi.org/10.1002/cphc.201500642}},
  doi          = {{10.1002/cphc.201500642}},
  volume       = {{16}},
  year         = {{2015}},
}