The Role of Surface Defects in the Adsorption and Desorption of Hydrogen on Ni(111)

Klaus Rendulic; Adolf Winkler; Hans-Peter Steinrück

doi:10.1016/S0039-6028(87)80171-1

The Role of Surface Defects in the Adsorption and Desorption of Hydrogen on Ni(111)

Klaus Rendulic, Adolf Winkler, Hans-Peter Steinrück

Institute of Solid State Physics (5130)

Research output: Contribution to journal › Article › peer-review

Abstract

On a smooth Ni(111) surface both the β1 and the β2 state show activated adsorption. The desorption flux is highly peaked towards the surface normal. Defects introduce non-activated adsorption sites which lower the desorption temperatures in flash desorption. At the same time a cosine dependence of the desorption flux is obtained. Because of its small sticking coefficient the β1 state is already influenced by small defect concentrations; the β2 state is only affected on highly defective surfaces.

Original language	English
Pages (from-to)	469-478
Journal	Surface Science
Volume	185
Issue number	3
DOIs	https://doi.org/10.1016/S0039-6028(87)80171-1
Publication status	Published - 1987

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)
Experimental

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10.1016/S0039-6028(87)80171-1

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title = "The Role of Surface Defects in the Adsorption and Desorption of Hydrogen on Ni(111)",

abstract = "On a smooth Ni(111) surface both the β1 and the β2 state show activated adsorption. The desorption flux is highly peaked towards the surface normal. Defects introduce non-activated adsorption sites which lower the desorption temperatures in flash desorption. At the same time a cosine dependence of the desorption flux is obtained. Because of its small sticking coefficient the β1 state is already influenced by small defect concentrations; the β2 state is only affected on highly defective surfaces.",

author = "Klaus Rendulic and Adolf Winkler and Hans-Peter Steinr{\"u}ck",

note = "Available online 29 July 2006.",

year = "1987",

doi = "10.1016/S0039-6028(87)80171-1",

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journal = "Surface Science",

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T1 - The Role of Surface Defects in the Adsorption and Desorption of Hydrogen on Ni(111)

AU - Rendulic, Klaus

AU - Winkler, Adolf

AU - Steinrück, Hans-Peter

N1 - Available online 29 July 2006.

PY - 1987

Y1 - 1987

N2 - On a smooth Ni(111) surface both the β1 and the β2 state show activated adsorption. The desorption flux is highly peaked towards the surface normal. Defects introduce non-activated adsorption sites which lower the desorption temperatures in flash desorption. At the same time a cosine dependence of the desorption flux is obtained. Because of its small sticking coefficient the β1 state is already influenced by small defect concentrations; the β2 state is only affected on highly defective surfaces.

AB - On a smooth Ni(111) surface both the β1 and the β2 state show activated adsorption. The desorption flux is highly peaked towards the surface normal. Defects introduce non-activated adsorption sites which lower the desorption temperatures in flash desorption. At the same time a cosine dependence of the desorption flux is obtained. Because of its small sticking coefficient the β1 state is already influenced by small defect concentrations; the β2 state is only affected on highly defective surfaces.

U2 - 10.1016/S0039-6028(87)80171-1

DO - 10.1016/S0039-6028(87)80171-1

M3 - Article

SN - 1879-2758

VL - 185

SP - 469

EP - 478

JO - Surface Science

JF - Surface Science

IS - 3

ER -

The Role of Surface Defects in the Adsorption and Desorption of Hydrogen on Ni(111)

Abstract

Treatment code (Nähere Zuordnung)

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