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| Title: | Bimetallic Pt-Ag and Pd-Ag nanoparticles | |
| Author (s): | Doudna, C.M. Bertino, Massimo Blum, Frank D. Tokuhiro, Akira | |
| Department/Lab Affiliations: | Chemistry Materials Research Center | |
| Keywords: | Bimetallic Pt–Ag and Pd–Ag nanoparticles crystallographic mismatch | |
| Issue Date: | 2005-04-19 | |
| Publisher: | American Institute of Physics | |
| Citation: | Doudna, C.M., Blum, Frank D., Bertino, Massimo F., and Tokuhiro, Akira T. "Bimetallic Pt-Ag and Pd-Ag Nanoparticles." Journal of Applied Physics, vol. 97, (2005). | |
| Abstract: | We report studies of bimetallic nanoparticles with 15%–16% atomic crystal parameters size mismatch. The degree of alloying was probed in a 2-nm Pt core (smallest attainable core size) of Pt–Ag nanoparticles (completely immiscible in bulk) and 20-nm-diameter Pd–Ag nanowires (completely miscible in bulk). Particles were synthesized radiolytically, and depending on the initial parameters, they assume spherical or cylindrical (nanowire) morphologies. In all cases, the metals are seen to follow their bulk alloying characteristics. Pt and Ag segregate in both spherical and wire forms, which indicates that strain due to crystallographic mismatch overcomes the excess surface free energy in the small particles. The Pd–Ag nanowires alloy similar to previously reported spherical Pd–Ag particles of similar diameter and composition. | |
| Type: | Article - Journal text | |
| In Title: | Journal of Applied Physics | |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: | |
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| title | Bimetallic Pt-Ag and Pd-Ag nanoparticles | |
| contributor.author | Doudna, C.M. | |
| contributor.author | Bertino, Massimo | |
| contributor.author | Blum, Frank D. | |
| contributor.author | Tokuhiro, Akira | |
| contributor.deptlab | Chemistry | |
| contributor.deptlab | Materials Research Center | |
| contributor.sponsor | United States Department of Energy | |
| subject | Bimetallic | |
| subject | Pt–Ag and Pd–Ag nanoparticles | |
| subject | crystallographic mismatch | |
| date.issued | 2005-04-19 | |
| publisher | American Institute of Physics | |
| identifier.citation | Doudna, C.M., Blum, Frank D., Bertino, Massimo F., and Tokuhiro, Akira T. "Bimetallic Pt-Ag and Pd-Ag Nanoparticles." Journal of Applied Physics, vol. 97, (2005). | |
| identifier.pub.URI | ||
| description.abstract | We report studies of bimetallic nanoparticles with 15%–16% atomic crystal parameters size mismatch. The degree of alloying was probed in a 2-nm Pt core (smallest attainable core size) of Pt–Ag nanoparticles (completely immiscible in bulk) and 20-nm-diameter Pd–Ag nanowires (completely miscible in bulk). Particles were synthesized radiolytically, and depending on the initial parameters, they assume spherical or cylindrical (nanowire) morphologies. In all cases, the metals are seen to follow their bulk alloying characteristics. Pt and Ag segregate in both spherical and wire forms, which indicates that strain due to crystallographic mismatch overcomes the excess surface free energy in the small particles. The Pd–Ag nanowires alloy similar to previously reported spherical Pd–Ag particles of similar diameter and composition. | |
| type | Article - Journal | |
| type.DCMIType | text | |
| type.status | Postprint | |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. | |
| rights.URI | ||
| relation.isPartOf | Journal of Applied Physics | |
| date.accessioned | 2008-04-01T16:23:21Z | |
| date.available | 2008-04-01T16:23:20Z | |
| identifier.persist.URI | ||
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