Diffusion and Stability of Metal Clusters Supported on Pd（001） Surface
- Received Date: 2004-04-23
Abstract: The stability and diffusion behaviors of 1.3 MPa Pt, Pd, Ni and Cu clusters supported on Pd(001) surface were studied by the Monte Carlo method. The support surface can strongly influence the stability and diffusion behaviors of the supported clusters. The structure transition temperatures of the supported clusters are much lower than the melting temperatures of their corresponding free clusters due to the vibration coupling between the support and the clusters. The stability of the supported clusters depends on not only the strength of metalsupport interaction but also the strength of the metalmetal interaction. The diffusion constants of supported 1.3 MPa clusters are similar to those of corresponding metal atoms. Combining the diffusion parameters with the critical temperature of the supported clusters, the thermal stability is closely related to the diffusion behaviors of the metal clusters.
|Citation:||Tian Dongxu, Guo Xiangyun. Diffusion and Stability of Metal Clusters Supported on Pd（001） Surface[J]. Chinese Journal of Chemical Physics , 2005, 18(3): 346-350. doi: 10.1088/1674-0068/18/3/346-350|