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In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy

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Timoshenko, Janis, Roldan Cuenya, Beatriz·2021·Chemical Reviews

Abstract

Abstract During the last decades, X-ray absorption spectroscopy (XAS) has become an indispensable method for probing the structure and composition of heterogeneous catalysts, revealing the nature of the active sites and establishing links between structural motifs in a catalyst, local electronic structure, and catalytic properties. Here we discuss the fundamental principles of the XAS method and describe the progress in the instrumentation and data analysis approaches undertaken for deciphering X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra. Recent usages of XAS in the field of heterogeneous catalysis, with emphasis on examples concerning electrocatalysis, will be presented. The latter is a rapidly developing field with immense industrial applications but also unique challenges in terms of the experimental characterization restrictions and advanced modeling approaches required. This review will highlight the new insight that can be gained with XAS on complex real-world electrocatalysts including their working mechanisms and the dynamic processes taking place in the course of a chemical reaction. More specifically, we will discuss applications of in situ and operando XAS to probe the catalyst’s interactions with the environment (support, electrolyte, ligands, adsorbates, reaction products, and intermediates) and its structural, chemical, and electronic transformations as it adapts to the reaction conditions.

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Metadata

Authors
Timoshenko, J., & Roldan Cuenya, B.
Venue
Chemical Reviews
Published
2020-09-28
Volume
121
Issue
2
Pages
882-961
ISSN
  • 0009-2665 (ISSN-L)
  • 1520-6890
OpenAlex
W3087355161
Cited by
931
References
36
FWCI
9.42
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy. https://app.cochat.ai/papers/10.1021/acs.chemrev.0c00396
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Timoshenko, J., & Roldan Cuenya, B. (2021). In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy. Chemical Reviews. https://doi.org/10.1021/acs.chemrev.0c00396

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