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:
Imaging and Characterization Core Lab; Advanced Nanofabrication, Imaging and Characterization Core Lab; Core Labs
Publisher:
American Chemical Society (ACS)
Journal:
The 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 Society (ACS)en
dc.titleNanoblock aggregation-disaggregation of zeolite nanoparticles: Temperature control on crystallinityen
dc.typeArticleen
dc.contributor.departmentImaging and Characterization Core Laben
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentCore Labsen
dc.identifier.journalThe Journal 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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