Szilágyi, P. Á., Rogers, D. M., Zaiser, I., Callini, E., Turner, S., Borgschulte, A., Züttel, A., Geerlings, H., Hirscher, M. and Dam, B. (2017) Functionalised metal-organic frameworks: a novel approach to stabilising single metal atoms. Journal of Materials Chemistry A, 5 (30). pp. 15559-15566. ISSN 2050-7488 (Print), 2050-7496 (Online) (doi:10.1039/C7TA03134C)

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Abstract

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 the future.

Item Type:	Article
Uncontrolled Keywords:	Metal-organic frameworks, Immobilisation of single atoms, Sigma complex, Hydrogen activation
Subjects:	Q Science > QC Physics
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Science (SCI)
Last Modified:	13 Jun 2018 00:38
URI:	http://gala.gre.ac.uk/id/eprint/17438

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