Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy
X-ray absorption spectroscopy (XAS) is a non-destructive spectroscopic technique commonly used with synchrotron radiation source and measures the changes of absorption coefficient as the function of the x-ray energy. Its unique power is that it can reveal the internal structure of nanoparticles, eve...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Engineering Society for Corrosion, Belgrade
2015-12-01
|
| Series: | Zaštita Materijala |
| Subjects: | |
| Online Access: | https://www.zastita-materijala.org/index.php/home/article/view/764 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850237110887383040 |
|---|---|
| author | Nebojša Marinković Radoslav R. Adžić |
| author_facet | Nebojša Marinković Radoslav R. Adžić |
| author_sort | Nebojša Marinković |
| collection | DOAJ |
| description | X-ray absorption spectroscopy (XAS) is a non-destructive spectroscopic technique commonly used with synchrotron radiation source and measures the changes of absorption coefficient as the function of the x-ray energy. Its unique power is that it can reveal the internal structure of nanoparticles, even if the particle is made up of several elements. By analyzing the results, interatomic distances and coordination numbers for each element are obtained, and their values and relationships indicate whether the elements in the nanoparticle are in a homogeneous solution, physically separated, or form a core-shell particles in which certain elements are mostly located in the core, and the other in the shell. The latter type of nanoparticles is of particular interest for the electrocatalysts as it reduces the precious metal content in the nanoparticles by replacing the precious metal in the the nanoparticles' core with less expensive alternatives. This paper describes the internal structure characterization of the nanoparticle electrocatalysts by in situ XAS, and gives certain examples of systems composed of two or three metals. |
| format | Article |
| id | doaj-art-1bcbc6687e0548a5be689beac4e81aff |
| institution | OA Journals |
| issn | 0351-9465 2466-2585 |
| language | English |
| publishDate | 2015-12-01 |
| publisher | Engineering Society for Corrosion, Belgrade |
| record_format | Article |
| series | Zaštita Materijala |
| spelling | doaj-art-1bcbc6687e0548a5be689beac4e81aff2025-08-20T02:01:50ZengEngineering Society for Corrosion, BelgradeZaštita Materijala0351-94652466-25852015-12-0156446347010.5937/ZasMat1504463M763Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopyNebojša Marinković0Radoslav R. Adžić1Synchrotron Catalysis Consortium and Columbia University, New York, NY, USABrookhaven National Laboratory, Upton, NY, USAX-ray absorption spectroscopy (XAS) is a non-destructive spectroscopic technique commonly used with synchrotron radiation source and measures the changes of absorption coefficient as the function of the x-ray energy. Its unique power is that it can reveal the internal structure of nanoparticles, even if the particle is made up of several elements. By analyzing the results, interatomic distances and coordination numbers for each element are obtained, and their values and relationships indicate whether the elements in the nanoparticle are in a homogeneous solution, physically separated, or form a core-shell particles in which certain elements are mostly located in the core, and the other in the shell. The latter type of nanoparticles is of particular interest for the electrocatalysts as it reduces the precious metal content in the nanoparticles by replacing the precious metal in the the nanoparticles' core with less expensive alternatives. This paper describes the internal structure characterization of the nanoparticle electrocatalysts by in situ XAS, and gives certain examples of systems composed of two or three metals.https://www.zastita-materijala.org/index.php/home/article/view/764x-ray absorption spectroscopyexafsxanesnanocatalystscore-shell |
| spellingShingle | Nebojša Marinković Radoslav R. Adžić Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy Zaštita Materijala x-ray absorption spectroscopy exafs xanes nanocatalysts core-shell |
| title | Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy |
| title_full | Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy |
| title_fullStr | Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy |
| title_full_unstemmed | Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy |
| title_short | Characterization of nanoparticle electrocatalysts using X-ray absorption spectroscopy |
| title_sort | characterization of nanoparticle electrocatalysts using x ray absorption spectroscopy |
| topic | x-ray absorption spectroscopy exafs xanes nanocatalysts core-shell |
| url | https://www.zastita-materijala.org/index.php/home/article/view/764 |
| work_keys_str_mv | AT nebojsamarinkovic characterizationofnanoparticleelectrocatalystsusingxrayabsorptionspectroscopy AT radoslavradzic characterizationofnanoparticleelectrocatalystsusingxrayabsorptionspectroscopy |