Flexible ZIFs: probing guest-induced flexibility with CO 2 , N 2 and Ar adsorption

Antonio Noguera-Díaz, Jhonny Villarroel-Rocha, Valeska P. Ting, Nuno Bimbo, Karim Sapag, Timothy J. Mays

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

BACKGROUND: The effect of framework topology on the guest-induced flexibility of several crystalline zeolitic imidazolate frameworks (ZIF-7, ZIF-9, ZIF-11 and ZIF-12) was investigated via analysis of experimental nitrogen (N 2 ), carbon dioxide (CO 2 ) and argon (Ar) isotherms at 77 K (N 2 and Ar) and 273 K (CO 2 ) for gas pressures up to 0.13 MPa. RESULTS: The experimental isotherms of these frameworks were analysed in order to investigate their structural flexibility using gases with kinetic diameters equal to or larger than the diameters of their static pore apertures. The results of gas sorption measurements indicate guest-induced phase changes for ZIF-7 and ZIF-9 (SOD topologies). ZIF-12 (RHO topology) also shows uptake for gases, despite its pore-limiting diameter being smaller than the kinetic diameters of the adsorbed molecules. CONCLUSIONS: This work highlights the ability of ZIFs with different framework topologies to change their structure and increase their pore aperture upon interaction with certain gases. These findings are key in the development of more selective ZIF-based materials for important industrial applications including low-energy gas separations, catalytic nanoreactors and sensor technology.

LanguageEnglish
JournalJournal of Chemical Technology and Biotechnology
Early online date28 Jan 2019
DOIs
StatusE-pub ahead of print - 28 Jan 2019

Keywords

  • breathing structure
  • flexibility
  • gas adsorption
  • MOF
  • nanomaterials
  • ZIF

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Flexible ZIFs : probing guest-induced flexibility with CO 2 , N 2 and Ar adsorption. / Noguera-Díaz, Antonio; Villarroel-Rocha, Jhonny; Ting, Valeska P.; Bimbo, Nuno; Sapag, Karim; Mays, Timothy J.

In: Journal of Chemical Technology and Biotechnology, 28.01.2019.

Research output: Contribution to journalArticle

Noguera-Díaz, Antonio ; Villarroel-Rocha, Jhonny ; Ting, Valeska P. ; Bimbo, Nuno ; Sapag, Karim ; Mays, Timothy J. / Flexible ZIFs : probing guest-induced flexibility with CO 2 , N 2 and Ar adsorption. In: Journal of Chemical Technology and Biotechnology. 2019.
@article{500cb815ccf2488fa5a87fbdd7a41fe8,
title = "Flexible ZIFs: probing guest-induced flexibility with CO 2 , N 2 and Ar adsorption",
abstract = "BACKGROUND: The effect of framework topology on the guest-induced flexibility of several crystalline zeolitic imidazolate frameworks (ZIF-7, ZIF-9, ZIF-11 and ZIF-12) was investigated via analysis of experimental nitrogen (N 2 ), carbon dioxide (CO 2 ) and argon (Ar) isotherms at 77 K (N 2 and Ar) and 273 K (CO 2 ) for gas pressures up to 0.13 MPa. RESULTS: The experimental isotherms of these frameworks were analysed in order to investigate their structural flexibility using gases with kinetic diameters equal to or larger than the diameters of their static pore apertures. The results of gas sorption measurements indicate guest-induced phase changes for ZIF-7 and ZIF-9 (SOD topologies). ZIF-12 (RHO topology) also shows uptake for gases, despite its pore-limiting diameter being smaller than the kinetic diameters of the adsorbed molecules. CONCLUSIONS: This work highlights the ability of ZIFs with different framework topologies to change their structure and increase their pore aperture upon interaction with certain gases. These findings are key in the development of more selective ZIF-based materials for important industrial applications including low-energy gas separations, catalytic nanoreactors and sensor technology.",
keywords = "breathing structure, flexibility, gas adsorption, MOF, nanomaterials, ZIF",
author = "Antonio Noguera-D{\'i}az and Jhonny Villarroel-Rocha and Ting, {Valeska P.} and Nuno Bimbo and Karim Sapag and Mays, {Timothy J.}",
year = "2019",
month = "1",
day = "28",
doi = "10.1002/jctb.5947",
language = "English",
journal = "Journal of Chemical Technology & Biotechnology",
issn = "0268-2575",
publisher = "John Wiley and Sons Inc.",

}

TY - JOUR

T1 - Flexible ZIFs

T2 - Journal of Chemical Technology & Biotechnology

AU - Noguera-Díaz, Antonio

AU - Villarroel-Rocha, Jhonny

AU - Ting, Valeska P.

AU - Bimbo, Nuno

AU - Sapag, Karim

AU - Mays, Timothy J.

PY - 2019/1/28

Y1 - 2019/1/28

N2 - BACKGROUND: The effect of framework topology on the guest-induced flexibility of several crystalline zeolitic imidazolate frameworks (ZIF-7, ZIF-9, ZIF-11 and ZIF-12) was investigated via analysis of experimental nitrogen (N 2 ), carbon dioxide (CO 2 ) and argon (Ar) isotherms at 77 K (N 2 and Ar) and 273 K (CO 2 ) for gas pressures up to 0.13 MPa. RESULTS: The experimental isotherms of these frameworks were analysed in order to investigate their structural flexibility using gases with kinetic diameters equal to or larger than the diameters of their static pore apertures. The results of gas sorption measurements indicate guest-induced phase changes for ZIF-7 and ZIF-9 (SOD topologies). ZIF-12 (RHO topology) also shows uptake for gases, despite its pore-limiting diameter being smaller than the kinetic diameters of the adsorbed molecules. CONCLUSIONS: This work highlights the ability of ZIFs with different framework topologies to change their structure and increase their pore aperture upon interaction with certain gases. These findings are key in the development of more selective ZIF-based materials for important industrial applications including low-energy gas separations, catalytic nanoreactors and sensor technology.

AB - BACKGROUND: The effect of framework topology on the guest-induced flexibility of several crystalline zeolitic imidazolate frameworks (ZIF-7, ZIF-9, ZIF-11 and ZIF-12) was investigated via analysis of experimental nitrogen (N 2 ), carbon dioxide (CO 2 ) and argon (Ar) isotherms at 77 K (N 2 and Ar) and 273 K (CO 2 ) for gas pressures up to 0.13 MPa. RESULTS: The experimental isotherms of these frameworks were analysed in order to investigate their structural flexibility using gases with kinetic diameters equal to or larger than the diameters of their static pore apertures. The results of gas sorption measurements indicate guest-induced phase changes for ZIF-7 and ZIF-9 (SOD topologies). ZIF-12 (RHO topology) also shows uptake for gases, despite its pore-limiting diameter being smaller than the kinetic diameters of the adsorbed molecules. CONCLUSIONS: This work highlights the ability of ZIFs with different framework topologies to change their structure and increase their pore aperture upon interaction with certain gases. These findings are key in the development of more selective ZIF-based materials for important industrial applications including low-energy gas separations, catalytic nanoreactors and sensor technology.

KW - breathing structure

KW - flexibility

KW - gas adsorption

KW - MOF

KW - nanomaterials

KW - ZIF

UR - http://www.scopus.com/inward/record.url?scp=85062549631&partnerID=8YFLogxK

U2 - 10.1002/jctb.5947

DO - 10.1002/jctb.5947

M3 - Article

JO - Journal of Chemical Technology & Biotechnology

JF - Journal of Chemical Technology & Biotechnology

SN - 0268-2575

ER -