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

Tomoko K. 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 Jan 1

ASJC Scopus subject areas

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

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