|
Hokkaido University Collection of Scholarly and Academic Papers >
Institute for Catalysis >
Peer-reviewed Journal Articles, etc >
STM studies on the reconstruction of the Ni2P (101[-]0) surface
| Title: | STM studies on the reconstruction of the Ni2P (101[-]0) surface |
| Authors: | Guo, Donghui Browse this author | | Nakagawa, Yuta Browse this author | | Ariga, Hiroko Browse this author | | Suzuki, Shushi Browse this author | | Kinoshita, Kumiko Browse this author | | Miyamoto, Takeshi Browse this author | | Takakusagi, Satoru Browse this author →KAKEN DB | | Asakura, Kiyotaka Browse this author | | Otani, Shigeki Browse this author | | Oyama, S. Ted Browse this author |
| Keywords: | Nickel phosphide | | Scanning tunneling microscopy | | Surface relaxation and reconstruction | | Density functional calculations | | Low index single crystal surfaces |
| Issue Date: | 30-Aug-2010 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Surface Science |
| Volume: | 604 |
| Issue: | 17-18 |
| Start Page: | 1347 |
| End Page: | 1352 |
| Publisher DOI: | 10.1016/j.susc.2010.03.024 |
| Abstract: | The surface structure of Ni2P (101[-]0), a model for highly active hydrodesulfurization catalysts, was studied using scanning tunneling microscopy (STM) and low energy electron diffraction (LEED) in order to understand the reconstruction of the surface layers. Annealing at 573 K revealed a (1 x 1) LEED pattern which changed to a c(2 x 4) arrangement by further heating to 723 K. Atomic scale STM images were obtained for both the (1 x 1) and c(2 x 4) structures. Bright spots observed in the STM images were interpreted to be due to surface phosphorus atoms and this was supported by a density functional theory (DFT) simulation. Several possible models for the c(2 x 4) reconstructed structures were proposed including a P-dimer defect model, a missing-row model and a missing-row + added row model. The last model gave the best explanation for the c(2 x 4) structure. The mechanism for the c(2 x 4) reconstruction on the Ni2P (101[-]0) surface is discussed. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/43798 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 朝倉 清高
|
