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Analysis of the Outer Surface of Platinum-Gold Catalysts by Low-Energy Ion Scattering

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Authors: Brongersma, Hidde H.; Grehl, Thomas; Schofield, Emma R.; Smith, Richard A. P.; ter Veen, Hendrik R. J.

Source: Platinum Metals Review, Volume 54, Number 2, April 2010, pp. 81-87(7)

Publisher: Johnson Matthey

DOI: https://doi.org/10.1595/147106710X494358

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Low-energy ion scattering (LEIS) can be used to selectively analyse the atomic composition of the outer atomic layer of a catalyst, i.e., precisely the atoms that largely determine its activity and selectivity. It is shown how a new development in LEIS significantly improves its mass resolution. Using this advanced separation and quantification of signals from platinum and gold, the atomic composition of the outer surface of a realistic supported platinum-gold bimetallic system can be determined for the first time.

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Document Type: Research Article

Publication date: April 1, 2010

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Analysis of the Outer Surface of Platinum-Gold Catalysts by Low-Energy Ion Scattering

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