In situ X-ray reflectivity and GISAXS study of mesoporous silica films grown from sodium silicate solution precursors
(2022) In Microporous and Mesoporous Materials 341.- Abstract
An environmentally friendly and inexpensive silica source, sodium silicate solution, was applied to synthesize a free-standing mesoporous silica film at the air/liquid interface, exploiting the co-assembly of cetyltrimethylammonium bromide and polyethylenimine. The effect of the composition of the solution used for the film formation on the mesostructure of the as-synthesized silica films, characterized by small angle X-ray scattering (SAXS), was investigated. The initial film formation time is estimated by the change in surface pressure with time. Additionally, a possible formation process of the mesostructured silica film is proposed using data from in situ grazing incidence small angle X-ray scattering (GISAXS) and X-ray... (More)
An environmentally friendly and inexpensive silica source, sodium silicate solution, was applied to synthesize a free-standing mesoporous silica film at the air/liquid interface, exploiting the co-assembly of cetyltrimethylammonium bromide and polyethylenimine. The effect of the composition of the solution used for the film formation on the mesostructure of the as-synthesized silica films, characterized by small angle X-ray scattering (SAXS), was investigated. The initial film formation time is estimated by the change in surface pressure with time. Additionally, a possible formation process of the mesostructured silica film is proposed using data from in situ grazing incidence small angle X-ray scattering (GISAXS) and X-ray reflectivity (XRR) measurements. A free-standing film with a wormlike structure was formed at the interface and reorganized into a 2D hexagonal ordered structure while drying at room temperature, after removal from the air/solution interface. The ordered 2D hexagonal structure, however, could only be retained to some extent during calcination, in samples where nitrate ions are present in the film formation solution.
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- author
- Di, Andi ; Schmitt, Julien LU ; Elstone, Naomi ; Arnold, Thomas and Edler, Karen J. LU
- publishing date
- 2022-08
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Microporous and Mesoporous Materials
- volume
- 341
- article number
- 112018
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85132323519
- ISSN
- 1387-1811
- DOI
- 10.1016/j.micromeso.2022.112018
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2022 The Authors
- id
- e821ed27-475a-4131-ba00-c291a30bada5
- date added to LUP
- 2022-07-12 13:54:30
- date last changed
- 2022-07-25 13:07:35
@article{e821ed27-475a-4131-ba00-c291a30bada5, abstract = {{<p>An environmentally friendly and inexpensive silica source, sodium silicate solution, was applied to synthesize a free-standing mesoporous silica film at the air/liquid interface, exploiting the co-assembly of cetyltrimethylammonium bromide and polyethylenimine. The effect of the composition of the solution used for the film formation on the mesostructure of the as-synthesized silica films, characterized by small angle X-ray scattering (SAXS), was investigated. The initial film formation time is estimated by the change in surface pressure with time. Additionally, a possible formation process of the mesostructured silica film is proposed using data from <i>in situ</i> grazing incidence small angle X-ray scattering (GISAXS) and X-ray reflectivity (XRR) measurements. A free-standing film with a wormlike structure was formed at the interface and reorganized into a 2D hexagonal ordered structure while drying at room temperature, after removal from the air/solution interface. The ordered 2D hexagonal structure, however, could only be retained to some extent during calcination, in samples where nitrate ions are present in the film formation solution.</p>}}, author = {{Di, Andi and Schmitt, Julien and Elstone, Naomi and Arnold, Thomas and Edler, Karen J.}}, issn = {{1387-1811}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Microporous and Mesoporous Materials}}, title = {{<i>In situ</i> X-ray reflectivity and GISAXS study of mesoporous silica films grown from sodium silicate solution precursors}}, url = {{http://dx.doi.org/10.1016/j.micromeso.2022.112018}}, doi = {{10.1016/j.micromeso.2022.112018}}, volume = {{341}}, year = {{2022}}, }