Open AccessStructure and reactions of carbon and hydrogen on Ru(0001): A scanning tunneling microscopy study
Author(s) -
Tomoko K. Shimizu,
Aitor Mugarza,
Jorge I. Cerdá,
Miquel Salmerón
Publication year - 2008
Publication title -
the journal of chemical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.071
H-Index - 357
eISSN - 1089-7690
pISSN - 0021-9606
DOI - 10.1063/1.2991434
Subject(s) - scanning tunneling microscope , density functional theory , chemistry , hydrogen , adsorption , carbon fibers , hydrogen molecule , hydrogen storage , crystallography , computational chemistry , nanotechnology , materials science , organic chemistry , composite number , composite material
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 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 {yields} CH{sub 2} reaction
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom