A flat-lying dimer as a key intermediate in NO reduction on Cu(100). Issue 31 (30th July 2021)

• Record Type: Journal Article
• Authors: Kuroishi, Kenta; Al Fauzan, Muhammad Rifqi; Pham, Thanh Ngoc; Wang, Yuelin; Hamamoto, Yuji; Inagaki, Kouji; Shiotari, Akitoshi; Okuyama, Hiroshi; Hatta, Shinichiro; Aruga, Tetsuya; Hamada, Ikutaro; Morikawa, Yoshitada
• Is Part Of: Physical chemistry chemical physics. Volume 23:Issue 31(2021)
• Page Start: 16880
• Page End: 16887
• Publication Date: 2021-07-30
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/d1cp02746h
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : The reaction of nitric oxide (NO) on Cu(100) is studied by scanning tunneling microscopy, electron energy loss spectroscopy and density functional theory calculations. Abstract : The reaction of nitric oxide (NO) on Cu(100) is studied by scanning tunneling microscopy, electron energy loss spectroscopy and density functional theory calculations. The NO molecules adsorb mainly as monomers at 64 K, and react and dissociate to yield oxygen atoms on the surface at ∼70 K. The temperature required for the dissociation is significantly low for Cu(100), compared to those for Cu(111) and Cu(110). The minimum energy pathway of the reaction is via (NO)2 formation, which converts into a flat-lying ONNO and then dissociates into N2 O and O with a considerably low activation energy. We propose that the formation of (NO)2 and flat-lying ONNO is the key to the exceptionally high reactivity of NO on Cu(100).