TY - JOUR
T1 - HREELS study on hydrogen adsorbed Al(111) surface
AU - Kondoh, H.
AU - Nishihara, C.
AU - Nozoye, H.
AU - Hara, M.
AU - Domen, K.
PY - 1991/12/20
Y1 - 1991/12/20
N2 - Recently we have confirmed that aluminium hydride desorbs around room temperature from hydrogen adsorbed Al(111) surface by thermal desorption spectroscopy (TDS). In this study, adsorbed states of hydrogen atoms on Al(111) were investigated, from 85 K to the desorption temperature, by use of high resolution electron loss spectroscopy (HREELS). The loss features observed in the HREEL spectra were assigned based on the local density functional (LDF) calculation. It was revealed that two or three hydrogen atoms adsorb on an aluminium terminal site at low temperature (<150 K), and that some fraction of the terminal hydrogen atoms migrate to bridge sites on increasing the temperature above 150 K.
AB - Recently we have confirmed that aluminium hydride desorbs around room temperature from hydrogen adsorbed Al(111) surface by thermal desorption spectroscopy (TDS). In this study, adsorbed states of hydrogen atoms on Al(111) were investigated, from 85 K to the desorption temperature, by use of high resolution electron loss spectroscopy (HREELS). The loss features observed in the HREEL spectra were assigned based on the local density functional (LDF) calculation. It was revealed that two or three hydrogen atoms adsorb on an aluminium terminal site at low temperature (<150 K), and that some fraction of the terminal hydrogen atoms migrate to bridge sites on increasing the temperature above 150 K.
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U2 - 10.1016/0009-2614(91)80284-5
DO - 10.1016/0009-2614(91)80284-5
M3 - Article
AN - SCOPUS:0000763374
SN - 0009-2614
VL - 187
SP - 466
EP - 470
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5
ER -