TY - JOUR
T1 - Hydrogen adsorption on a Pt(110)-(1 × 2) surface
AU - Shern, C. S.
N1 - Funding Information:
The author is grateful to Mr. J.L. Chen and Mr. P.C. Liao for their help in the computer programming of data analysis. This work was supported by the National Science Council of ROC under grant number NSC 80-020%M003-14.
PY - 1992/3/1
Y1 - 1992/3/1
N2 - Low-energy electron diffraction (LEED), temperature-programmed desorption (TPD) and the work function change, which was measured by a mirror-electron-microscope-LEED were used to study the adsorption of hydrogen on the (1 × 2) reconstructed surface of Pt(110) at T = 170 K. Two adsorbed states β1 andβ2 were found in the TPD spectra. The state β1 belongs to first-order desorption while the state β2 is second-order desorption. The initial sticking coefficient is 0.8. The change of work function, ΔW, is positive at low coverage and (ΔW)max = 0.15 eV at a relative coverage R of 0.05. ΔW becomes negative as R increases to 0.2, and (ΔW)max = -0.6 eV at saturation coverage. No new LEED pattern was observed in this adsorption. The possible adsorption sites of different geometrical positions are discussed.
AB - Low-energy electron diffraction (LEED), temperature-programmed desorption (TPD) and the work function change, which was measured by a mirror-electron-microscope-LEED were used to study the adsorption of hydrogen on the (1 × 2) reconstructed surface of Pt(110) at T = 170 K. Two adsorbed states β1 andβ2 were found in the TPD spectra. The state β1 belongs to first-order desorption while the state β2 is second-order desorption. The initial sticking coefficient is 0.8. The change of work function, ΔW, is positive at low coverage and (ΔW)max = 0.15 eV at a relative coverage R of 0.05. ΔW becomes negative as R increases to 0.2, and (ΔW)max = -0.6 eV at saturation coverage. No new LEED pattern was observed in this adsorption. The possible adsorption sites of different geometrical positions are discussed.
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U2 - 10.1016/0039-6028(92)90175-6
DO - 10.1016/0039-6028(92)90175-6
M3 - Article
AN - SCOPUS:0026836961
SN - 0039-6028
VL - 264
SP - 171
EP - 176
JO - Surface Science
JF - Surface Science
IS - 1-2
ER -