2006
DOI: 10.1103/physrevb.73.184109
|View full text |Cite
|
Sign up to set email alerts
|

Physisorbed films in periodic mesoporous silica studied byin situsynchrotron small-angle diffraction

Abstract: Adsorption and capillary condensation of an organic fluid in a periodic mesoporous silica ͑SBA-15͒ are studied by in situ synchrotron diffraction. Powder diffraction patterns resulting from the two-dimensional hexagonal packing of the cylindrical pores of SBA-15 are collected as a function of vapor pressure during continuous adsorption and desorption of the fluid ͑perfluoropentane C 5 F 12 ͒, using a specially designed sorption cell. Seven diffraction peaks with systematic changes of the intensity are resolved… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

11
198
1

Year Published

2006
2006
2017
2017

Publication Types

Select...
8
1

Relationship

3
6

Authors

Journals

citations
Cited by 108 publications
(210 citation statements)
references
References 38 publications
11
198
1
Order By: Relevance
“…A similar situation was found during studies of SBA-15 silica powders by Jähnert et al [39]. In that work, the "corona-model" originally proposed by Imperor-Clerk et al [47] and later refined by Zickler et al [48] was adopted to describe surface roughness and related microporosity within the mesopore walls of SBA-15 silica. To estimate the amounts of "ordered" and "disordered" pores the corona model uses a combination of nitrogen sorption and SAXS data.…”
Section: Pore Structuresupporting
confidence: 58%
“…A similar situation was found during studies of SBA-15 silica powders by Jähnert et al [39]. In that work, the "corona-model" originally proposed by Imperor-Clerk et al [47] and later refined by Zickler et al [48] was adopted to describe surface roughness and related microporosity within the mesopore walls of SBA-15 silica. To estimate the amounts of "ordered" and "disordered" pores the corona model uses a combination of nitrogen sorption and SAXS data.…”
Section: Pore Structuresupporting
confidence: 58%
“…Thus, ordered mesoporous materials are very suitable for studies of fluid adsorption. Template-grown silica and other self-ordered mesoporous substrates, such as ordered porous alumina, were intensively explored by in situ X-ray 22,[56][57][58][59][60] and neutron scattering [61][62][63] studies during adsorption of various fluids.…”
Section: B Strains On the Microscopic Scalementioning
confidence: 99%
“…During the sorption process in-situ X-ray diffraction measurements are performed using synchrotron radiation [22]. The experimental setup is described elsewhere [11,23] and consists essentially of a thermostatted sample chamber with X-ray transparent windows, which is connected to a fluid reservoir via a gas dosing system. The gas pressure in the sample chamber is changed slowly but continuously while the X-ray powder patterns are recorded.…”
Section: Experimental Backgroundmentioning
confidence: 99%
“…Very recently, even metallic systems have been synthesized [10]. A broad variety of adsorbates ranging from classical polar and nonpolar fluids [11,12] to quantum fluids [13] have been investigated. Particularly prominent examples both from an experimental and from a theoretical perspective are mesoporous silicas such as MCM-41 [14] or SBA-15 [15].…”
mentioning
confidence: 99%