Structure and reactions of carbon and hydrogen on Ru(0001): A scanning tunneling microscopy study

Tomoko Shimizu, Aitor Mugarza, Jorge I. Cerdá, Miquel Salmeron

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The interaction between carbon and hydrogen atoms on a Ru(0001) surface was studied using scanning tunneling microscopy (STM), density functional theory (DFT) and STM image calculations. Formation of CH species by reaction between adsorbed H and C was observed to occur readily at 100 K. When the coverage of H increased new complexes of the form of CH+nH (n=1, 2, and 3) were observed. These complexes, never observed before, might be precursors for further hydrogenation reactions. DFT analysis reveals that a considerable energy barrier exists for the CH+H→ CH2 reaction.

Original languageEnglish
Article number244103
JournalJournal of Chemical Physics
Volume129
Issue number24
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

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Scanning tunneling microscopy
Density functional theory
scanning tunneling microscopy
Hydrogen
Carbon
methylidyne
carbon
Energy barriers
hydrogen
density functional theory
Hydrogenation
Atoms
hydrogenation
hydrogen atoms
atoms
interactions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Structure and reactions of carbon and hydrogen on Ru(0001) : A scanning tunneling microscopy study. / Shimizu, Tomoko; Mugarza, Aitor; Cerdá, Jorge I.; Salmeron, Miquel.

In: Journal of Chemical Physics, Vol. 129, No. 24, 244103, 01.12.2008.

Research output: Contribution to journalArticle

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