Nanoblock aggregation-disaggregation of zeolite nanoparticles: Temperature control on crystallinity

Handle URI:
http://hdl.handle.net/10754/561757
Title:
Nanoblock aggregation-disaggregation of zeolite nanoparticles: Temperature control on crystallinity
Authors:
Gao, Feifei; Sougrat, Rachid; Albela, Belén; Bonneviot, Laurent
Abstract:
During the induction period of silicalite-1 formation at 80 °C, primary nanoblocks of 8-11 nm self-assemble together into fragile nanoflocculates of ca. 60 nm that dislocate and reappear according to a slow pseudoperiodical process. Between 22 and 32 h, the nanoflocculates grow up to 350 nm and contain ill- and well-oriented aggregates of ca. 40 nm. After 48 h, only ill-faceted monodomains of ca. 90 nm remains, which self-assemble into larger flocculates of ca. 450 nm. For crystal growth performed at 90 °C, most of the final aggregates exhibit ill-oriented assembly. This is consistent with a trial-and-error block-by-block building mechanism that turns into an irreversible and apparently faster process at 90 °C, causing definitively ill-oriented product. The nanoblocks, aggregates, and flocculates were characterized in nondiluted, nondiluted and ultrasonicated, or diluted and ultrasonicated solutions, using mainly dynamic light scattering and cryo-high-resolution transmission electron microscopy at various tilted angles. © 2011 American Chemical Society.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Core Labs
Publisher:
American Chemical Society
Journal:
Journal of Physical Chemistry C
Issue Date:
21-Apr-2011
DOI:
10.1021/jp111928j
Type:
Article
ISSN:
19327447
Sponsors:
This work was supported by Award No. UK-C0017 of King Abdullah University of Science and Technology. Dr. S. Casale of UPMC is acknowledged for the HRTEM observation.
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorGao, Feifeien
dc.contributor.authorSougrat, Rachiden
dc.contributor.authorAlbela, Belénen
dc.contributor.authorBonneviot, Laurenten
dc.date.accessioned2015-08-03T09:03:55Zen
dc.date.available2015-08-03T09:03:55Zen
dc.date.issued2011-04-21en
dc.identifier.issn19327447en
dc.identifier.doi10.1021/jp111928jen
dc.identifier.urihttp://hdl.handle.net/10754/561757en
dc.description.abstractDuring the induction period of silicalite-1 formation at 80 °C, primary nanoblocks of 8-11 nm self-assemble together into fragile nanoflocculates of ca. 60 nm that dislocate and reappear according to a slow pseudoperiodical process. Between 22 and 32 h, the nanoflocculates grow up to 350 nm and contain ill- and well-oriented aggregates of ca. 40 nm. After 48 h, only ill-faceted monodomains of ca. 90 nm remains, which self-assemble into larger flocculates of ca. 450 nm. For crystal growth performed at 90 °C, most of the final aggregates exhibit ill-oriented assembly. This is consistent with a trial-and-error block-by-block building mechanism that turns into an irreversible and apparently faster process at 90 °C, causing definitively ill-oriented product. The nanoblocks, aggregates, and flocculates were characterized in nondiluted, nondiluted and ultrasonicated, or diluted and ultrasonicated solutions, using mainly dynamic light scattering and cryo-high-resolution transmission electron microscopy at various tilted angles. © 2011 American Chemical Society.en
dc.description.sponsorshipThis work was supported by Award No. UK-C0017 of King Abdullah University of Science and Technology. Dr. S. Casale of UPMC is acknowledged for the HRTEM observation.en
dc.publisherAmerican Chemical Societyen
dc.titleNanoblock aggregation-disaggregation of zeolite nanoparticles: Temperature control on crystallinityen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentCore Labsen
dc.identifier.journalJournal of Physical Chemistry Cen
dc.contributor.institutionUniv Lyon, Ecole Normale Super Lyon, CNRS, Lab Chim,UMR 5182, F-69364 Lyon 07, Franceen
kaust.authorSougrat, Rachiden
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