Visualization of the Heterogeneity of Cerium Oxidation States in Single Pt/Ce2Zr2Ox Catalyst Particles by Nano‐XAFS1. Issue 8 (11th March 2014)

• Record Type: Journal Article
• Authors: Ishiguro, Nozomu; Uruga, Tomoya; Sekizawa, Oki; Tsuji, Takuya; Suzuki, Motohiro; Kawamura, Naomi; Mizumaki, Masaichiro; Nitta, Kiyofumi; Yokoyama, Toshihiko; Tada, Mizuki
• Is Part Of: Chemphyschem. Volume 15:Issue 8(2014)
• Page Start: 1563
• Page End: 1568
• Publication Date: 2014-03-11
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201400090
• Languages: English
• ISSNs: 1439-4235

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The cerium oxidation states in single catalyst particles of Pt/Ce₂Zr₂O_{<italic>x</italic>} (<italic>x</italic>=7 to 8) were investigated by spatially resolved nano X‐ray absorption fine structure (nano‐XAFS) using an X‐ray nanobeam. Differences in the distribution of the Ce oxidation states between Pt/Ce₂Zr₂O_{<italic>x</italic>} single particles of different oxygen compositions <italic>x</italic> were visualized in the obtained two‐dimensional X‐ray fluorescent (XRF) mapping images and the Ce <italic>L</italic>_III‐edge nano X‐ray absorption near‐edge structure (nano‐XANES) spectra.</p> </abstract>