Visualization of the Heterogeneity of Cerium Oxidation States in Single Pt/Ce 2 Zr 2 O  x   Catalyst Particles by Nano‐XAFS | Zendy

Ishiguro Nozomu | Zendy; Uruga Tomoya | Zendy; Sekizawa Oki | Zendy; Tsuji Takuya | Zendy; Suzuki Motohiro | Zendy; Kawamura Naomi | Zendy; Mizumaki Masaichiro | Zendy; Nitta Kiyofumi | Zendy; Yokoyama Toshihiko | Zendy; Tada Mizuki | Zendy

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Visualization of the Heterogeneity of Cerium Oxidation States in Single Pt/Ce 2 Zr 2 O x Catalyst Particles by Nano‐XAFS

Author(s) -

Ishiguro Nozomu,

Uruga Tomoya,

Sekizawa Oki,

Tsuji Takuya,

Suzuki Motohiro,

Kawamura Naomi,

Mizumaki Masaichiro,

Nitta Kiyofumi,

Yokoyama Toshihiko,

Tada Mizuki

Publication year - 2014

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.201400090

Subject(s) - x ray absorption fine structure , xanes , cerium , catalysis , extended x ray absorption fine structure , cerium oxide , materials science , analytical chemistry (journal) , nano , absorption (acoustics) , absorption spectroscopy , x ray absorption spectroscopy , crystallography , chemistry , spectral line , inorganic chemistry , spectroscopy , optics , physics , biochemistry , chromatography , quantum mechanics , astronomy , composite material

The cerium oxidation states in single catalyst particles of Pt/Ce 2 Zr 2 O x ( x =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/Ce 2 Zr 2 O x single particles of different oxygen compositions x were visualized in the obtained two‐dimensional X‐ray fluorescent (XRF) mapping images and the Ce L III ‐edge nano X‐ray absorption near‐edge structure (nano‐XANES) spectra.

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