Pore shape and sorption behaviour in mesoporous ordered silica films

Mesoporous silica films templated by pluronic P123 were prepared using spin and dip coating. The ordered cylindrical structure within the films deforms due to shrinkage during calcination. Grazing-incidence small-angle X-ray scattering (GISAXS) measurements reveal that both the unit cell and the cro...

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Autores principales: Fritz-Popovski, Gerhard, Morak, Roland, Sharifi, Parvin, Amenitsch, Heinz, Paris, Oskar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2016
Materias:
Research Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045732/
https://www.ncbi.nlm.nih.gov/pubmed/27738418
http://dx.doi.org/10.1107/S1600576716013698
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author Fritz-Popovski, Gerhard
Morak, Roland
Sharifi, Parvin
Amenitsch, Heinz
Paris, Oskar
author_facet Fritz-Popovski, Gerhard
Morak, Roland
Sharifi, Parvin
Amenitsch, Heinz
Paris, Oskar
author_sort Fritz-Popovski, Gerhard
collection PubMed
description Mesoporous silica films templated by pluronic P123 were prepared using spin and dip coating. The ordered cylindrical structure within the films deforms due to shrinkage during calcination. Grazing-incidence small-angle X-ray scattering (GISAXS) measurements reveal that both the unit cell and the cross section of the pores decrease in size, mainly normal to the surface of the substrate, leading to elliptical cross sections of the pores with axis ratios of about 1:2. Water take-up by the pores upon changing the relative humidity can be monitored quantitatively by the shift in the critical angle of X-ray reflection as seen by the Yoneda peak.
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spelling pubmed-50457322016-10-13 Pore shape and sorption behaviour in mesoporous ordered silica films Fritz-Popovski, Gerhard Morak, Roland Sharifi, Parvin Amenitsch, Heinz Paris, Oskar J Appl Crystallogr Research Papers Mesoporous silica films templated by pluronic P123 were prepared using spin and dip coating. The ordered cylindrical structure within the films deforms due to shrinkage during calcination. Grazing-incidence small-angle X-ray scattering (GISAXS) measurements reveal that both the unit cell and the cross section of the pores decrease in size, mainly normal to the surface of the substrate, leading to elliptical cross sections of the pores with axis ratios of about 1:2. Water take-up by the pores upon changing the relative humidity can be monitored quantitatively by the shift in the critical angle of X-ray reflection as seen by the Yoneda peak. International Union of Crystallography 2016-09-23 /pmc/articles/PMC5045732/ /pubmed/27738418 http://dx.doi.org/10.1107/S1600576716013698 Text en © Gerhard Fritz-Popovski et al. 2016 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Fritz-Popovski, Gerhard
Morak, Roland
Sharifi, Parvin
Amenitsch, Heinz
Paris, Oskar
Pore shape and sorption behaviour in mesoporous ordered silica films
title Pore shape and sorption behaviour in mesoporous ordered silica films
title_full Pore shape and sorption behaviour in mesoporous ordered silica films
title_fullStr Pore shape and sorption behaviour in mesoporous ordered silica films
title_full_unstemmed Pore shape and sorption behaviour in mesoporous ordered silica films
title_short Pore shape and sorption behaviour in mesoporous ordered silica films
title_sort pore shape and sorption behaviour in mesoporous ordered silica films
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045732/
https://www.ncbi.nlm.nih.gov/pubmed/27738418
http://dx.doi.org/10.1107/S1600576716013698
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