Metal-organic frameworks as catalyst supports : influence of defects on metal nanoparticle formation

Miguel Rivera-Torrente, Matthias Filez, Rifan Hardian, Emily Reynolds, Beatriz Seoane, Marie Vanessa Coulet, Freddy E. Oropeza Palacio, Jan P. Hofmann, Roland A. Fischer, Andrew L. Goodwin, Philip L. Llewellyn, Bert M. Weckhuysen

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)
29 Downloads (Pure)

Abstract

Because of their high tunability and surface area, metal-organic frameworks (MOFs) show great promise as supports for metal nanoparticles. Depending on the synthesis route, MOFs may contain defects. Here, we show that highly crystalline MIL-100(Fe) and disordered Basolite® F300, with identical iron 1,3,5-benzenetricarboxylate composition, exhibit very divergent properties when used as a support for Pd nanoparticle deposition. While MIL-100(Fe) shows a regular MTN-zeotype crystal structure with two types of cages, Basolite® F300 lacks long-range order beyond 8Å and has a single-pore system. The medium-range configurational linker-node disorder in Basolite® F300 results in a reduced number of Lewis acid sites, yielding more hydrophobic surface properties compared to hydrophilic MIL-100(Fe). The hydrophilic/hydrophobic nature of MIL-100(Fe) and Basolite® F300 impacts the amount of Pd and particle size distribution of Pd nanoparticles deposited during colloidal synthesis and dry impregnation methods, respectively. It is suggested that polar (apolar) solvents/precursors attractively interact with hydrophilic (hydrophobic) MOF surfaces, allowing tools at hand to increase the level of control over, for example, the nanoparticle size distribution.

Original languageEnglish
Pages (from-to)7498-7506
Number of pages9
JournalChemistry : A European Journal
Volume24
Issue number29
DOIs
Publication statusPublished - 23 May 2018

Keywords

  • Basolite
  • Heterogeneous catalysis
  • Lattice disorder
  • Metal-organic frameworks (MOF)
  • MIL-100 (Fe)
  • Pd nanoparticles
  • heterogeneous catalysis
  • metal-organic frameworks (MOF)
  • lattice disorder

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