μ-Tiles and mortar approach: A simple technique for the facile fabrication of continuous b-oriented MFI silicalite-1 thin films

dc.contributor.author	Lee, I	en
dc.contributor.author	Buday, JL	en
dc.contributor.author	Jeong, H-K	en
dc.date.accessioned	2014-06-06T06:49:04Z
dc.date.available	2014-06-06T06:49:04Z
dc.date.issued	2009	en
dc.identifier.issn	13871811	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.micromeso.2009.03.017	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4407
dc.subject	Gas separation	en
dc.subject	Molecular sieve	en
dc.subject	Preferred orientation	en
dc.subject	Thin film	en
dc.subject	Zeolite membrane	en
dc.subject.other	Continuous films	en
dc.subject.other	Crystal layers	en
dc.subject.other	Engineering challenges	en
dc.subject.other	Facile fabrications	en
dc.subject.other	Flat crystals	en
dc.subject.other	Functionalized surfaces	en
dc.subject.other	Gas separation	en
dc.subject.other	Gold/palladium	en
dc.subject.other	In planes	en
dc.subject.other	In-plane directions	en
dc.subject.other	Manual assemblies	en
dc.subject.other	Membrane thickness	en
dc.subject.other	Micro-crystals	en
dc.subject.other	Mortar methods	en
dc.subject.other	Nucleation and growths	en
dc.subject.other	Oriented crystals	en
dc.subject.other	Out of planes	en
dc.subject.other	Out-of-plane directions	en
dc.subject.other	Porous substrates	en
dc.subject.other	Preferred orientation	en
dc.subject.other	Randomly oriented grains	en
dc.subject.other	Secondary growths	en
dc.subject.other	Silicalite-1	en
dc.subject.other	Simple methods	en
dc.subject.other	Zeolite membrane	en
dc.subject.other	Building materials	en
dc.subject.other	Crystal microstructure	en
dc.subject.other	Fabrication	en
dc.subject.other	Film growth	en
dc.subject.other	Grain boundaries	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Molecular orientation	en
dc.subject.other	Molecular sieves	en
dc.subject.other	Mortar	en
dc.subject.other	Nucleation	en
dc.subject.other	Plaster	en
dc.subject.other	Sieves	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Single crystals	en
dc.subject.other	Substrates	en
dc.subject.other	Thin film devices	en
dc.subject.other	Thin films	en
dc.subject.other	Zeolites	en
dc.subject.other	Gas permeable membranes	en
dc.title	μ-Tiles and mortar approach: A simple technique for the facile fabrication of continuous b-oriented MFI silicalite-1 thin films	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.micromeso.2009.03.017	en
heal.publicationDate	2009	en
heal.abstract	Here we report a simple method, what we call a μ-tiles and mortar method, to grow highly b-oriented MFI thin films on substrates in a facile manner. The method involves three main steps: (1) rapidly assembling b-oriented MFI micro-crystal layers on porous substrates using manual assembly (i.e., direct assembly by rubbing crystals on functionalized surfaces), (2) passivating the flat crystal faces by sputtering a thin gold/palladium layer to prevent the nucleation and growth of crystals along the out-of-plane direction while allowing the growth of crystals along the in-plane direction, and followed by (3) filling the gaps between the MFI micro-crystals by allowing the crystals to grow only in the plane while preventing the out-of-plane growth of the crystals. It is shown that the key to the successful fabrication of oriented MFI thin films is to promote the in-plane (i.e., parallel to the support) growth of oriented zeolite tiles on substrates during the secondary growth step so as to eliminate the intercrystal gaps and generate a continuous film while preventing the out-of-plane (i.e., perpendicular to the support) growth and nucleation of mis-oriented grains. Using the μ-tiles and mortar method, we have demonstrated that continuous b-oriented MFI thin films can be readily made with controllable microstructure such as membrane thickness, size of single crystal domain, and density of grain boundary. We have also made, for the first time, MFI thin films that have preferentially oriented crystal grains with randomly oriented grain boundary structure. The method reported here has potentials to address some of the current engineering challenges for practical applications of zeolite membranes by enabling the fabrication of oriented zeolite membranes in a simple manner.	en
heal.journalName	Microporous and Mesoporous Materials	en
dc.identifier.issue	1-3	en
dc.identifier.volume	122	en
dc.identifier.doi	10.1016/j.micromeso.2009.03.017	en
dc.identifier.spage	288	en
dc.identifier.epage	293	en