The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study
We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatmen...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
Royal Society of Chemistry Publishing
2010
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/8948/1/The%20Co%E2%80%93Au%20interface%20in%20bimetallic%20nanoparticles.pdf |
| _version_ | 1824370875684618240 |
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| author | Mayoral, Alvaro Mejía Rosales, Sergio Mariscal, Marcelo M. Pérez Tijerina, Eduardo Yacamán, Miguel José |
| author_facet | Mayoral, Alvaro Mejía Rosales, Sergio Mariscal, Marcelo M. Pérez Tijerina, Eduardo Yacamán, Miguel José |
| author_sort | Mayoral, Alvaro |
| collection | Repositorio Institucional |
| description | We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatment at normal atmospheric conditions, the Co nanoparticles changed their morphology into a fine layer forming a perfect interface with the gold. The ordering of the zone rich in Co presents a fcc arrangement matching the gold lattice. The atomic analysis on the interface and the comparison of the STEM images with numerical simulations corroborated the atomic substitution of gold by cobalt. |
| format | Article |
| id | eprints-8948 |
| institution | UANL |
| language | English |
| publishDate | 2010 |
| publisher | Royal Society of Chemistry Publishing |
| record_format | eprints |
| spelling | eprints-89482016-02-08T22:02:18Z http://eprints.uanl.mx/8948/ The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study Mayoral, Alvaro Mejía Rosales, Sergio Mariscal, Marcelo M. Pérez Tijerina, Eduardo Yacamán, Miguel José Q Ciencias en General QC Física We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatment at normal atmospheric conditions, the Co nanoparticles changed their morphology into a fine layer forming a perfect interface with the gold. The ordering of the zone rich in Co presents a fcc arrangement matching the gold lattice. The atomic analysis on the interface and the comparison of the STEM images with numerical simulations corroborated the atomic substitution of gold by cobalt. Royal Society of Chemistry Publishing 2010 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/8948/1/The%20Co%E2%80%93Au%20interface%20in%20bimetallic%20nanoparticles.pdf http://eprints.uanl.mx/8948/1.haspreviewThumbnailVersion/The%20Co%E2%80%93Au%20interface%20in%20bimetallic%20nanoparticles.pdf Mayoral, Alvaro y Mejía Rosales, Sergio y Mariscal, Marcelo M. y Pérez Tijerina, Eduardo y Yacamán, Miguel José (2010) The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study. Nanoscale, 2. pp. 2647-2651. ISSN 2040-3364 |
| spellingShingle | Q Ciencias en General QC Física Mayoral, Alvaro Mejía Rosales, Sergio Mariscal, Marcelo M. Pérez Tijerina, Eduardo Yacamán, Miguel José The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study |
| title_full | The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study |
| title_fullStr | The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study |
| title_full_unstemmed | The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study |
| title_short | The Co–Au interface in bimetallic nanoparticles: a high resolution STEM study |
| title_sort | co au interface in bimetallic nanoparticles a high resolution stem study |
| topic | Q Ciencias en General QC Física |
| url | http://eprints.uanl.mx/8948/1/The%20Co%E2%80%93Au%20interface%20in%20bimetallic%20nanoparticles.pdf |
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