Search for encapsulation of platinum, silver, and gold at the surface of graphite
Using scanning tunneling microscopy, we show that Pt clusters can be encapsulated beneath the surface of graphite, whereas Ag and Au cannot. This is in complete agreement with independent predictions from density functional theory, which show that surface intercalation of single metal atoms is favor...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-07-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033175 |
| _version_ | 1797211313523392512 |
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| author | Ann Lii-Rosales Yong Han Dapeng Jing Michael C. Tringides Patricia A. Thiel |
| author_facet | Ann Lii-Rosales Yong Han Dapeng Jing Michael C. Tringides Patricia A. Thiel |
| author_sort | Ann Lii-Rosales |
| collection | DOAJ |
| description | Using scanning tunneling microscopy, we show that Pt clusters can be encapsulated beneath the surface of graphite, whereas Ag and Au cannot. This is in complete agreement with independent predictions from density functional theory, which show that surface intercalation of single metal atoms is favorable for Pt, but unfavorable for Ag and Au. This supports the validity of using single-metal-atom energetics for predicting encapsulation of metal nanoparticles at the graphite surface. We also demonstrate that the optimal temperature for encapsulation scales with the cohesive energy of the metal. |
| first_indexed | 2024-04-24T10:24:30Z |
| format | Article |
| id | doaj.art-124de12786b54d0792794e3c05d643d0 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:24:30Z |
| publishDate | 2020-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-124de12786b54d0792794e3c05d643d02024-04-12T16:58:06ZengAmerican Physical SocietyPhysical Review Research2643-15642020-07-012303317510.1103/PhysRevResearch.2.033175Search for encapsulation of platinum, silver, and gold at the surface of graphiteAnn Lii-RosalesYong HanDapeng JingMichael C. TringidesPatricia A. ThielUsing scanning tunneling microscopy, we show that Pt clusters can be encapsulated beneath the surface of graphite, whereas Ag and Au cannot. This is in complete agreement with independent predictions from density functional theory, which show that surface intercalation of single metal atoms is favorable for Pt, but unfavorable for Ag and Au. This supports the validity of using single-metal-atom energetics for predicting encapsulation of metal nanoparticles at the graphite surface. We also demonstrate that the optimal temperature for encapsulation scales with the cohesive energy of the metal.http://doi.org/10.1103/PhysRevResearch.2.033175 |
| spellingShingle | Ann Lii-Rosales Yong Han Dapeng Jing Michael C. Tringides Patricia A. Thiel Search for encapsulation of platinum, silver, and gold at the surface of graphite Physical Review Research |
| title | Search for encapsulation of platinum, silver, and gold at the surface of graphite |
| title_full | Search for encapsulation of platinum, silver, and gold at the surface of graphite |
| title_fullStr | Search for encapsulation of platinum, silver, and gold at the surface of graphite |
| title_full_unstemmed | Search for encapsulation of platinum, silver, and gold at the surface of graphite |
| title_short | Search for encapsulation of platinum, silver, and gold at the surface of graphite |
| title_sort | search for encapsulation of platinum silver and gold at the surface of graphite |
| url | http://doi.org/10.1103/PhysRevResearch.2.033175 |
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