Functionalised metal-organic frameworks

Functionalised metal-organic frameworks: A novel approach to stabilising single metal atoms

Szilagyi, P.A. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Rogers, D. M. (University of Edinburgh)
Zaiser, I. (Max Planck Institute for Intelligent Systems)
Callini, E (Swiss Federal Laboratories for Materials Science and Technology (Empa); École Polytechnique de Lausanne)
Turner, Stuart (Universiteit Antwerpen)
Borgschulte, A (Swiss Federal Laboratories for Materials Science and Technology (Empa))
Züttel, A. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Geerlings, J.J.C. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Hirscher, M (Max Planck Institute for Intelligent Systems)
Dam, B. (TU Delft ChemE/Materials for Energy Conversion and Storage)

2017

We have investigated the potential of metal-organic frameworks for immobilising single atoms of transition metals using a model system of Pd supported on NH₂-MIL-101(Cr). Our transmission electron microscopy and in situ Raman spectroscopy results give evidence for the first time that functionalised metal-organic frameworks may support, isolate and stabilise single atoms of palladium. Using thermal desorption spectroscopy we were able to evaluate the proportion of single Pd atoms. Furthermore, in a combined theoretical-experimental approach, we show that the H-H bonds in a H₂ molecule elongate by over 15% through the formation of a complex with single atoms of Pd. Such deformation would affect any hydrogenation reaction and thus the single atoms supported on metal-organic frameworks may become promising single atom catalysts in future.

http://resolver.tudelft.nl/uuid:fff9a228-94ee-4501-b90a-1e74842fb3d9

https://doi.org/10.1039/c7ta03134c

2018-06-12

2050-7488

Journal of Materials Chemistry A, 5 (30), 15559-15566

Institutional Repository

journal article

© 2017 P.A. Szilagyi, D. M. Rogers, I. Zaiser, E Callini, Stuart Turner, A Borgschulte, A. Züttel, J.J.C. Geerlings, M Hirscher, B. Dam