Crystal-Size-Dependent Structural Transitions in Nanoporous Crystals: Adsorption-Induced Transitions in ZIF-8

Handle URI:
http://hdl.handle.net/10754/597906
Title:
Crystal-Size-Dependent Structural Transitions in Nanoporous Crystals: Adsorption-Induced Transitions in ZIF-8
Authors:
Zhang, Chen; Gee, Jason A.; Sholl, David S.; Lively, Ryan P.
Abstract:
© 2014 American Chemical Society. Understanding the crystal-size dependence of both guest adsorption and structural transitions of nanoporous solids is crucial to the development of these materials. We find that nano-sized metal-organic framework (MOF) crystals have significantly different guest adsorption properties compared to the bulk material. A new methodology is developed to simulate the adsorption and transition behavior of entire MOF nanoparticles. Our simulations predict that the transition pressure significantly increases with decreasing particle size, in agreement with crystal-size-dependent experimental measurements of the N2-ZIF-8 system. We also propose a simple core-shell model to examine this effect on length scales that are inaccessible to simulations and again find good agreement with experiments. This study is the first to examine particle size effects on structural transitions in ZIFs and provides a thermodynamic framework for understanding the underlying mechanism.
Citation:
Zhang C, Gee JA, Sholl DS, Lively RP (2014) Crystal-Size-Dependent Structural Transitions in Nanoporous Crystals: Adsorption-Induced Transitions in ZIF-8. The Journal of Physical Chemistry C 118: 20727–20733. Available: http://dx.doi.org/10.1021/jp5081466.
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry C
KAUST Grant Number:
KUS-I1-011-21
Issue Date:
4-Sep-2014
DOI:
10.1021/jp5081466
Type:
Article
ISSN:
1932-7447; 1932-7455
Sponsors:
The authors thank Dr. Ke Zhang and Dr. Megan Lydon for PXRD measurements and TEM imaging. C.Z. acknowledges support provided by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Chenen
dc.contributor.authorGee, Jason A.en
dc.contributor.authorSholl, David S.en
dc.contributor.authorLively, Ryan P.en
dc.date.accessioned2016-02-25T12:58:40Zen
dc.date.available2016-02-25T12:58:40Zen
dc.date.issued2014-09-04en
dc.identifier.citationZhang C, Gee JA, Sholl DS, Lively RP (2014) Crystal-Size-Dependent Structural Transitions in Nanoporous Crystals: Adsorption-Induced Transitions in ZIF-8. The Journal of Physical Chemistry C 118: 20727–20733. Available: http://dx.doi.org/10.1021/jp5081466.en
dc.identifier.issn1932-7447en
dc.identifier.issn1932-7455en
dc.identifier.doi10.1021/jp5081466en
dc.identifier.urihttp://hdl.handle.net/10754/597906en
dc.description.abstract© 2014 American Chemical Society. Understanding the crystal-size dependence of both guest adsorption and structural transitions of nanoporous solids is crucial to the development of these materials. We find that nano-sized metal-organic framework (MOF) crystals have significantly different guest adsorption properties compared to the bulk material. A new methodology is developed to simulate the adsorption and transition behavior of entire MOF nanoparticles. Our simulations predict that the transition pressure significantly increases with decreasing particle size, in agreement with crystal-size-dependent experimental measurements of the N2-ZIF-8 system. We also propose a simple core-shell model to examine this effect on length scales that are inaccessible to simulations and again find good agreement with experiments. This study is the first to examine particle size effects on structural transitions in ZIFs and provides a thermodynamic framework for understanding the underlying mechanism.en
dc.description.sponsorshipThe authors thank Dr. Ke Zhang and Dr. Megan Lydon for PXRD measurements and TEM imaging. C.Z. acknowledges support provided by Award No. KUS-I1-011-21, made by King Abdullah University of Science and Technology (KAUST).en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleCrystal-Size-Dependent Structural Transitions in Nanoporous Crystals: Adsorption-Induced Transitions in ZIF-8en
dc.typeArticleen
dc.identifier.journalThe Journal of Physical Chemistry Cen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
kaust.grant.numberKUS-I1-011-21en
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