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Growth of silicalite-1 films on gold substrates
Luleå tekniska universitet.
Bulgarian Academy of Sciences.
Luleå tekniska universitet.
Luleå tekniska universitet.
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1997 (English)In: Microporous Materials, ISSN 0927-6513, E-ISSN 1873-3107, Vol. 11, no 3-4, p. 149-160Article in journal (Refereed) Published
Abstract [en]

The crystallization of thin continuous silicalite-1 films on modified gold surfaces prepared at 100°C in clear precursor solutions has been studied by grazing angle X-ray diffractometry, infrared spectroscopy, dynamic light scattering, scanning electron microscopy, Kr adsorption and ellipsometry. The gold surfaces were pre-treated with a silane coupling agent, gamma-mercaptopropyltrimethoxysilane, and hydrolysed in an acidic solution, pH < 4, to create a modified negatively charged interface on which positively charged colloidal silicalite-1 seed crystals were adsorbed. The colloidal seed crystals are believed to be preferentially adsorbed with their {010} face parallel to the Au surface. Continued growth of the oriented seed crystals in a following hydrothermal step results in the formation of a continuous thin oriented crystalline film. The mechanism for the formation of silicalite-1 films on Au is discussed

Place, publisher, year, edition, pages
1997. Vol. 11, no 3-4, p. 149-160
National Category
Chemical Process Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-3563DOI: 10.1016/S0927-6513(97)00037-0Local ID: 1640f5d0-2d81-11dd-9c9b-000ea68e967bOAI: oai:DiVA.org:ltu-3563DiVA: diva2:976421
Note
Godkänd; 1997; 20080529 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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