STM observation of the chemical reaction of atomic hydrogen on the N-adsorbed Cu(001) surface

Chemical reaction of atomic hydrogen with the N-adsorbed Cu(001) surfaces was investigated at room temperature by scanning tunnel microscopy. At the low exposure of atomic hydrogen, it reacted with the N atoms and turned to be the NH species on the surface. The reaction rate is proportional to the a...

Full description

Saved in:
Bibliographic Details
Published inSurface science Vol. 655; pp. 1 - 6
Main Authors Hattori, Takuma, Yamada, Masamichi, Komori, Fumio
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.01.2017
Elsevier BV
Subjects
Ammonia
Ammonia synthesis
Atomic hydrogen
Chemical reactions
Desorption
Hydrogen
Nitrogen
Reaction
STM
Atomic hydrogen
Cu
Ammonia synthesis
Reaction
Nitrogen
STM
Online AccessGet full text

Cover

More Information
Summary:Chemical reaction of atomic hydrogen with the N-adsorbed Cu(001) surfaces was investigated at room temperature by scanning tunnel microscopy. At the low exposure of atomic hydrogen, it reacted with the N atoms and turned to be the NH species on the surface. The reaction rate is proportional to the amount of the unreacted N atoms. By increasing the exposure of atomic hydrogen from this condition, the amount of nitrogen species on the surface decreased. This is attributed to the formation of ammonia and its desorption from the surface. The NH species on the surface turn to NH3 through the surface NH2 species by atomic hydrogen. Coexistence of the clean Cu surface enhances the rate of ammonia formation owing to atomic hydrogen migrating on the clean surface.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2016.08.003