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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10289673" target="_blank" >RIV/00216208:11320/14:10289673 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/anie.201402342" target="_blank" >http://dx.doi.org/10.1002/anie.201402342</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/anie.201402342" target="_blank" >10.1002/anie.201402342</a>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Angewandte Chemie - International Edition

ISSN

1433-7851

e-ISSN

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Volume of the periodical

53

Issue of the periodical within the volume

39

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

10525-10530

UT code for WoS article

000342760700047

EID of the result in the Scopus database

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