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Open AccessArticle

XPS Studies of the Initial Oxidation of Polycrystalline Rh Surface

Institute of Mathematics and Physics, UTP-University of Science and Technology, PL 85-796 Bydgoszcz, Poland
Author to whom correspondence should be addressed.
Catalysts 2020, 10(6), 617;
Received: 28 April 2020 / Revised: 28 May 2020 / Accepted: 28 May 2020 / Published: 2 June 2020
(This article belongs to the Special Issue Surface Chemistry in Catalysis)
Increased interest in the oxidation process of polycrystalline rhodium, observed in recent years, is the result of its application in exhaust catalytic converters. However, most studies have involved sample surfaces with low Miller indices. In our research, we investigated polycrystalline rhodium foil containing crystallographically different, highly stepped, µm-sized crystallites. These crystallites were exposed to identical oxidizing conditions. To determine crystallographic orientation, the electron backscattering diffraction (EBSD) method was used. To investigate the initial stages of oxidation on the individual crystallites of Rh, X-ray photoelectron spectroscopy (XPS) studies were performed. The results obtained for the individual crystallites were compared and analyzed using chemical state quantification of XPS data and multivariate statistical analysis (MVA). View Full-Text
Keywords: polycrystalline rhodium; spatially resolved XPS; multivariate analysis polycrystalline rhodium; spatially resolved XPS; multivariate analysis
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MDPI and ACS Style

Trzcinski, M.; Balcerowska-Czerniak, G.; Bukaluk, A. XPS Studies of the Initial Oxidation of Polycrystalline Rh Surface. Catalysts 2020, 10, 617.

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