Constrained Thorough Search Analysis of Multi-edge EXAFS Spectra for Characterization of Bimetallic Nanoparticles

The constrained thorough search (CTS) method has been applied to extended X-ray absorption fine structure (EXAFS) analysis of PtRu bimetallic nanoparticles for fuel-cell anode catalysts that are highly resistant to CO poisoning. The PtRu has a cluster-in-cluster or homobondphilic structure. CTS anal...

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Bibliographic Details
Published in:Chemistry letters 2022-05, Vol.51 (5), p.538-541
Main Authors: Kido, Daiki, Rahman, Md. Mijanur, Takeguchi, Tatsuya, Asakura, Kiyotaka
Format: Article
Language:English
Subjects:
Bimetals
Carbon monoxide poisoning
Cell anodes
Clusters
Constraints
Curve fitting
Fine structure
Intermetallic compounds
Nanoparticles
X ray absorption
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Summary:The constrained thorough search (CTS) method has been applied to extended X-ray absorption fine structure (EXAFS) analysis of PtRu bimetallic nanoparticles for fuel-cell anode catalysts that are highly resistant to CO poisoning. The PtRu has a cluster-in-cluster or homobondphilic structure. CTS analysis of EXAFS data not only analyzes Pt and Ru edge-EXAFS data simultaneously but also includes the physical constraints with errors. The method is expected to make EXAFS analysis more reliable than the conventional curve-fitting method.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.220090