Valence Orbitals of High Symmetry NO on Cu(001)
- 212 Downloads
The direct observation of molecular orbitals of molecules adsorbed onto surfaces is an extremely useful way to understand adsorbate–adsorbate and adsorbate–substrate interactions. In this chapter, I report the visualization of the valence orbitals of NO molecules on a Cu(001) surface with STM at 6 K. For a NO monomer on the surface, the valence \(2\pi ^*\) orbital remains doubly degenerate, because the molecule is bonded to a highly symmetric site of the surface. I also observed that the NO dimers on the surface spontaneously react to yield O adatoms at 78 K. The results indicate that NO/Cu(001) shows higher catalytic reactivity for NO reduction than the NO/Cu(110) system.
KeywordsValence orbitals Reduction of nitric oxide Scanning tunneling microscopy
- 4.M. Gajdoš, J. Hafner, A. Eichler, J. Phys.: Condens. Matter 18(1), 13 (2006). doi: 10.1088/0953-8984/18/1/002
- 5.A.A.B. Padama, H. Kishi, R.L. Arevalo, J.L.V. Moreno, H. Kasai, M. Taniguchi, M. Uenishi, H. Tanaka, Y. Nishihata, J. Phys.: Condens. Matter 24(17), 175005 (2012). doi: 10.1088/0953-8984/24/17/175005