Open AccessWORK FUNCTION STUDY OF CO AND K COADSORPTION ON Cu(lll) SURFACE
Author(s) -
Haiyang Li,
Li Zhu,
Yang Xu,
CAI LIAN-ZHEN
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.625
Subject(s) - work function , adsorption , materials science , kelvin probe force microscope , work (physics) , jellium , analytical chemistry (journal) , function (biology) , chemistry , atomic physics , thermodynamics , physics , nanotechnology , metal , metallurgy , layer (electronics) , evolutionary biology , biology , chromatography , atomic force microscopy
Coadsorption of CO and K on Cu(lll) surface was investigated using a Kelvin probe. We found that CO can adsorb (probably dissociatively) on the potassium precovered Cu(lll) surface at room temperature. When θKmin, (θmin = 0.18) the adsorption of CO makes the work function increase. When θK>θmin, the work function decreases at first, and then increases with amount of CO exposure. The results can be well accounted for by the jellium slab model.