Title
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Controlling pore size and uniformity of mesoporous titania by early stage low temperature stabilization
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Author
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Abstract
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The control of the formation process during and after self-assembly is of utmost importance to achieve well structured, controlled template-assisted mesoporous titania materials with the desired properties for various applications via the evaporation induced self-assembly method (EISA). The present paper reports on the large influence of the thermal stabilization and successive template removal on the pore structure of a mesostructured TiO2 material using the diblock copolymer Brij 58 as surfactant. A controlled thermal stabilization (temperature and duration) allows one to tailor the final pore size and uniformity much more precise by influencing the self-assembly of the template. Moreover, also the successive thermal template removal needs to be controlled in order to avoid a structural collapse. N2-sorption, TGA, TEM, FT-Raman spectroscopy, and small angle & wide angle XRD have been used to follow the crystal growth and mesostructure organization after thermal stabilization and after thermal template removal, revealing its effect on the final pore structure. |
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Language
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English
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Source (journal)
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Journal of colloid and interface science. - New York, N.Y., 1966, currens
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Publication
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New York, N.Y.
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2013
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ISSN
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0021-9797
[print]
1095-7103
[online]
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DOI
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10.1016/J.JCIS.2012.07.098
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Volume/pages
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391
(2013)
, p. 36-44
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ISI
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000312039000006
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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