Enhancement of the Water Adsorptivity of Metal-Organic Frameworks upon Hybridization with Layered Double Hydroxide Nanosheets

Haslinda Binti Mohd Sidek, Yun Kyung Jo, Tae Woo Kim, Young Kyu Hwang, Jong San Chang, Seong Ju Hwang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Efficient water adsorbents with improved hydrostability can be synthesized by the hybridization of metal-organic framework (MOF) compounds with exfoliated layered double hydroxide (LDH) 2D nanosheets. The self-assembly between copper benzene tricarboxylate (Cu-BTC) MOF nanocrystals and exfoliated Mg-Al-LDH nanosheets leads to the nanoscale mixing of the MOF and LDH components, as well as to the prevention of the formation of aggregated secondary MOF particles. In the resulting nanohybrids, spherical Cu-BTC nanocrystals with small particle sizes of ∼5-10 nm are uniformly anchored on the surface of Mg-Al-LDH 2D nanosheets with the dimensions of several hundred nanometers. At the optimal composition, the surface area of the resulting nanohybrid becomes greater than that of pristine Cu-BTC, which is attributable to the suppression of the self-aggregation of MOF nanocrystals and to the formation of the mesoporous stacking structure of the LDH nanosheets. Of prime importance is that both the water adsorption ability and the hydrostability of Cu-BTC become notably improved upon hybridization with LDH nanosheets. The present study clearly demonstrates that exfoliated LDH nanosheets can be used as an effective hybridization matrix for exploring novel efficient MOF-based hybrid water adsorbents.

Original languageEnglish
Pages (from-to)15008-15016
Number of pages9
JournalJournal of Physical Chemistry C
Volume121
Issue number28
DOIs
Publication statusPublished - 2017 Jul 20

Fingerprint

adsorptivity
Nanosheets
hydroxides
Metals
Water
augmentation
metals
Nanocrystals
water
nanocrystals
Adsorbents
adsorbents
Benzene
Organic compounds
Self assembly
hydroxide ion
Copper
organic compounds
Agglomeration
Particle size

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Mohd Sidek, Haslinda Binti ; Jo, Yun Kyung ; Kim, Tae Woo ; Hwang, Young Kyu ; Chang, Jong San ; Hwang, Seong Ju. / Enhancement of the Water Adsorptivity of Metal-Organic Frameworks upon Hybridization with Layered Double Hydroxide Nanosheets. In: Journal of Physical Chemistry C. 2017 ; Vol. 121, No. 28. pp. 15008-15016.
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Enhancement of the Water Adsorptivity of Metal-Organic Frameworks upon Hybridization with Layered Double Hydroxide Nanosheets. / Mohd Sidek, Haslinda Binti; Jo, Yun Kyung; Kim, Tae Woo; Hwang, Young Kyu; Chang, Jong San; Hwang, Seong Ju.

In: Journal of Physical Chemistry C, Vol. 121, No. 28, 20.07.2017, p. 15008-15016.

Research output: Contribution to journalArticle

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AU - Mohd Sidek, Haslinda Binti

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AB - Efficient water adsorbents with improved hydrostability can be synthesized by the hybridization of metal-organic framework (MOF) compounds with exfoliated layered double hydroxide (LDH) 2D nanosheets. The self-assembly between copper benzene tricarboxylate (Cu-BTC) MOF nanocrystals and exfoliated Mg-Al-LDH nanosheets leads to the nanoscale mixing of the MOF and LDH components, as well as to the prevention of the formation of aggregated secondary MOF particles. In the resulting nanohybrids, spherical Cu-BTC nanocrystals with small particle sizes of ∼5-10 nm are uniformly anchored on the surface of Mg-Al-LDH 2D nanosheets with the dimensions of several hundred nanometers. At the optimal composition, the surface area of the resulting nanohybrid becomes greater than that of pristine Cu-BTC, which is attributable to the suppression of the self-aggregation of MOF nanocrystals and to the formation of the mesoporous stacking structure of the LDH nanosheets. Of prime importance is that both the water adsorption ability and the hydrostability of Cu-BTC become notably improved upon hybridization with LDH nanosheets. The present study clearly demonstrates that exfoliated LDH nanosheets can be used as an effective hybridization matrix for exploring novel efficient MOF-based hybrid water adsorbents.

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