Influence of Capping on the Atomistic Arrangement in Palladium Nanoparticles at Room Temperature
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- 作者：Gast贸n Corthey ; Jimena A. Olmos-Asar ; Gilberto Casillas ; Marcelo M. Mariscal ; Sergio Mej铆a-Rosales ; Julio C. Azc谩rate ; Eduardo Larios ; Miguel Jos茅-Yacam谩n ; Roberto C. Salvarezza ; Mariano H. Fonticelli
- 刊名：Journal of Physical Chemistry C
- 出版年：2014
- 出版时间：October 23, 2014
- 年：2014
- 卷：118
- 期：42
- 页码：24641-24647
- 全文大小：507K
- ISSN：1932-7455
文摘
The role that protecting molecules have on the way that palladium atoms arrange themselves in nanoparticles prepared at room temperature was studied by the analysis of aberration-corrected scanning transmission electron microscopy images and atomistic Langevin dynamics simulations. It was found that the arrangement of Pd atoms is less ordered in thiolate-protected nanoparticles than in amine-protected ones. The experimental and theoretical data showed that the disorder in 鈭? nm thiolate-protected particles is promoted by the strong S鈥揚d bond in the sulfide layer that surrounds the nanoparticles.