Chemical bonding at the metal-organic framework/metal oxide interface: Simulated epitaxial growth of MOF-5 on rutile TiO2

Jessica K. Bristow, Keith T. Butler, Katrine L. Svane, Julian D. Gale, Aron Walsh

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14 Citations (Scopus)

Abstract

Thin-film deposition of metal-organic frameworks (MOFs) is now possible, but little is known regarding the microscopic nature of hybrid hetero-interfaces. We first assess optimal substrate combinations for coherent epitaxy of MOFs based on a lattice matching procedure. We then perform a detailed quantum mechanical/molecular mechanical investigation of the growth of (011) MOF-5 on (110) rutile TiO2. The lowest energy interface configuration involves a bidentate connection between two TiO6 polyhedra with deprotonation of terephthalic acid to a bridging oxide site. The epitaxy of MOF-5 on the surface of TiO2 was modelled with a forcefield parameterised to quantum chemical binding energies and bond lengths. The microscopic interface structure and chemical bonding characteristics are expected to be relevant to other hybrid framework-oxide combinations.

Original languageEnglish
Pages (from-to)6226-6232
Number of pages7
JournalJournal of Materials Chemistry A
Volume5
Issue number13
DOIs
Publication statusPublished - 2017

Bibliographical note

Funding Information:
J. K. B. is funded by the EPSRC (grant no. EP/G03768X/1). J. D. G. thanks the Australian Research Council for funding under the Discovery Programme, as well as the Pawsey Supercomputing Centre and NCI for the provision of computing resources. A. W. acknowledges support from the Royal Society University Research Fellowship scheme. K. L. S. is funded under ERC Starting Grant 277757 and K. T. B. is funded under EPSRC grant no. EP/M009580/1. The work benefited from the high performance computing facility at the University of Bath. Access to the ARCHER supercomputer was facilitated through membership of the HPC Materials Chemistry Consortium (EP/L000202).

Publisher Copyright:
© The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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