Reversed crystal growth of RHO zeolite imidazolate framework (ZIF)

Katherine Self; Michael Telfer; Heather Frances Greer; Wuzong Zhou

doi:10.1002/chem.201503437

Reversed crystal growth of RHO zeolite imidazolate framework (ZIF)

Katherine Self, Michael Telfer, Heather Frances Greer, Wuzong Zhou

Research output: Contribution to journal › Article › peer-review

Abstract

RHO zeolitic imidazolate framework (ZIF), Zn_1.33(O.OH)_0.33(nim)_1.167(pur), crystals with a rhombic dodecahedral morphology were synthesized by a solvothermal process. The growth of the crystals was studied over time using scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD) and Brunauer–Emmett–Teller (BET) analyses, and a reversed crystal growth mechanism was revealed. Initially, precursor materials joined together to form disordered aggregates, which then underwent surface recrystallization forming a core–shell structure, in which a disordered core is encased in a layer of denser, less porous crystal. When the growth continued, the shell became less and less porous, until it was a layer of true single crystal. The crystallization then extended from the surface to the core over a six-week period until, eventually, true single crystals were formed.

Original language	English
Pages (from-to)	19090–19095
Number of pages	6
Journal	Chemistry - A European Journal
Volume	21
Issue number	52
Early online date	18 Nov 2015
DOIs	https://doi.org/10.1002/chem.201503437
Publication status	Published - 21 Dec 2015

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Copyright 2014 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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@article{b94ddb48da43465fbad969e69c6c15f7,

title = "Reversed crystal growth of RHO zeolite imidazolate framework (ZIF)",

abstract = "RHO zeolitic imidazolate framework (ZIF), Zn1.33(O.OH)0.33(nim)1.167(pur), crystals with a rhombic dodecahedral morphology were synthesized by a solvothermal process. The growth of the crystals was studied over time using scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD) and Brunauer–Emmett–Teller (BET) analyses, and a reversed crystal growth mechanism was revealed. Initially, precursor materials joined together to form disordered aggregates, which then underwent surface recrystallization forming a core–shell structure, in which a disordered core is encased in a layer of denser, less porous crystal. When the growth continued, the shell became less and less porous, until it was a layer of true single crystal. The crystallization then extended from the surface to the core over a six-week period until, eventually, true single crystals were formed.",

author = "Katherine Self and Michael Telfer and Greer, {Heather Frances} and Wuzong Zhou",

note = "KS and MT would like to thank the University of St Andrews for the studentship, Dr J{\"u}rgen Kahr and Professor Paul Wright for their help with this work, Mr Ross Blackley for his help on using the SEM and TEM microscopes and Mrs Sylvia Williamson for her assistance with the N2 adsorption tests. HFG would like to thank EPSRC for the funding (EP/K015540/1). WZZ thanks EPSRC for the financial support to purchase the FEG SEM (EP/F019580/1). ",

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doi = "10.1002/chem.201503437",

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T1 - Reversed crystal growth of RHO zeolite imidazolate framework (ZIF)

AU - Self, Katherine

AU - Telfer, Michael

AU - Greer, Heather Frances

AU - Zhou, Wuzong

N1 - KS and MT would like to thank the University of St Andrews for the studentship, Dr Jürgen Kahr and Professor Paul Wright for their help with this work, Mr Ross Blackley for his help on using the SEM and TEM microscopes and Mrs Sylvia Williamson for her assistance with the N2 adsorption tests. HFG would like to thank EPSRC for the funding (EP/K015540/1). WZZ thanks EPSRC for the financial support to purchase the FEG SEM (EP/F019580/1).

PY - 2015/12/21

Y1 - 2015/12/21

N2 - RHO zeolitic imidazolate framework (ZIF), Zn1.33(O.OH)0.33(nim)1.167(pur), crystals with a rhombic dodecahedral morphology were synthesized by a solvothermal process. The growth of the crystals was studied over time using scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD) and Brunauer–Emmett–Teller (BET) analyses, and a reversed crystal growth mechanism was revealed. Initially, precursor materials joined together to form disordered aggregates, which then underwent surface recrystallization forming a core–shell structure, in which a disordered core is encased in a layer of denser, less porous crystal. When the growth continued, the shell became less and less porous, until it was a layer of true single crystal. The crystallization then extended from the surface to the core over a six-week period until, eventually, true single crystals were formed.

AB - RHO zeolitic imidazolate framework (ZIF), Zn1.33(O.OH)0.33(nim)1.167(pur), crystals with a rhombic dodecahedral morphology were synthesized by a solvothermal process. The growth of the crystals was studied over time using scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD) and Brunauer–Emmett–Teller (BET) analyses, and a reversed crystal growth mechanism was revealed. Initially, precursor materials joined together to form disordered aggregates, which then underwent surface recrystallization forming a core–shell structure, in which a disordered core is encased in a layer of denser, less porous crystal. When the growth continued, the shell became less and less porous, until it was a layer of true single crystal. The crystallization then extended from the surface to the core over a six-week period until, eventually, true single crystals were formed.

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DO - 10.1002/chem.201503437

M3 - Article

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VL - 21

SP - 19090

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JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

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ER -

Reversed crystal growth of RHO zeolite imidazolate framework (ZIF)

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Energy Materials Discovery: Energy Materials Discovery Characterisation and Application

EP/F019580/1 - Electron Microscopy: Electron Microscopy of Advanced Materials

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Reversed crystal growth of RHO zeolite imidazolate framework (ZIF)

Abstract

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Energy Materials Discovery: Energy Materials Discovery Characterisation and Application

EP/F019580/1 - Electron Microscopy: Electron Microscopy of Advanced Materials

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