Maximum Noble-Metal Efficiency in Catalytic Materials: Atomically Dispersed Surface Platinum

Bruix A, Lykhach Y, Matolinova I, Neitzel A, Skala T, Tsud N, Vorokhta M, Stetsovych V, Sevcikova K, Myslivecek J, Fiala R, Vaclavu M, Prince KC, Bruyere S, Potin V, Illas F, Matolin V, Libuda J, Neyman KM (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Angewandte Chemie International Edition Wiley

Publisher: WILEY-V C H VERLAG GMBH

Book Volume: 53

Pages Range: 10525-10530

Journal Issue: 39

DOI: 10.1002/anie.201402342

Abstract

Platinum is the most versatile element in catalysis, but it is rare and its high price limits large-scale applications, for example in fuel-cell technology. Still, conventional catalysts use only a small fraction of the Pt content, that is, those atoms located at the catalyst's surface. To maximize the noble-metal efficiency, the precious metal should be atomically dispersed and exclusively located within the outermost surface layer of the material. Such atomically dispersed Pt surface species can indeed be prepared with exceptionally high stability. Using DFT calculations we identify a specific structural element, a ceria "nanopocket", which binds Pt2+ so strongly that it withstands sintering and bulk diffusion. On model catalysts we experimentally confirm the theoretically predicted stability, and on real Pt-CeO2 nanocomposites showing high Pt efficiency in fuel-cell catalysis we also identify these anchoring sites.

Authors with CRIS profile

Yaroslava Lykhach Lehrstuhl für Physikalische Chemie II Armin Neitzel Lehrstuhl für Physikalische Chemie II Jörg Libuda Professur für Physikalische Chemie

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

Involved external institutions

Univerzita Karlova v Praze / Charles University in Prague CZ Czech Republic (CZ) Universitat de Barcelona (UB) / University of Barcelona ES Spain (ES) Université Bourgogne Franche-Comté FR France (FR) Elettra Sincrotrone Trieste S.C.p.A. IT Italy (IT)

How to cite

APA:

Bruix, A., Lykhach, Y., Matolinova, I., Neitzel, A., Skala, T., Tsud, N.,... Neyman, K.M. (2014). Maximum Noble-Metal Efficiency in Catalytic Materials: Atomically Dispersed Surface Platinum. Angewandte Chemie International Edition, 53(39), 10525-10530. https://dx.doi.org/10.1002/anie.201402342

MLA:

Bruix, Albert, et al. "Maximum Noble-Metal Efficiency in Catalytic Materials: Atomically Dispersed Surface Platinum." Angewandte Chemie International Edition 53.39 (2014): 10525-10530.

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