Adsorption of hydrogen on Al(111) and Al(110): coverage and temperature dependence of adsorption states

H. Kondoh; M. Hara; K. Domen; H. Nozoye

doi:10.1016/0039-6028(93)90745-6

Adsorption of hydrogen on Al(111) and Al(110): coverage and temperature dependence of adsorption states

H. Kondoh, M. Hara, K. Domen, H. Nozoye

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

22 Citations (Scopus)

Abstract

Although hydrogen adsorbed on aluminum surfaces is a simple-looking adsorption system, the interaction between them has been found to be very peculiar; that is, a large amount of aluminum hydride molecules such as Al₂H₆ and/or AlH₃ desorb from H/Al(111), while they desorb hardly from H/Al(110). In order to investigate the adsorption states of hydrogen on the two different aluminum surfaces, we have studied these systems by TPD, LEED, and HREELS. Hydrogen atoms adsorb in the island-growth manner on Al(111) at 85 K from the initial stage of adsorption and form a surface aluminum hydride after annealing the surface. The hydrogen adsorption on Al(110) at 85 K exhibits sequential site filling in contrast to H/Al(111) and displays a (1 × 2) reconstruction after annealing.

Original language	English
Pages (from-to)	74-78
Number of pages	5
Journal	Surface Science
Volume	287-288
Issue number	PART 1
DOIs	https://doi.org/10.1016/0039-6028(93)90745-6
Publication status	Published - 1993 May 10
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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abstract = "Although hydrogen adsorbed on aluminum surfaces is a simple-looking adsorption system, the interaction between them has been found to be very peculiar; that is, a large amount of aluminum hydride molecules such as Al2H6 and/or AlH3 desorb from H/Al(111), while they desorb hardly from H/Al(110). In order to investigate the adsorption states of hydrogen on the two different aluminum surfaces, we have studied these systems by TPD, LEED, and HREELS. Hydrogen atoms adsorb in the island-growth manner on Al(111) at 85 K from the initial stage of adsorption and form a surface aluminum hydride after annealing the surface. The hydrogen adsorption on Al(110) at 85 K exhibits sequential site filling in contrast to H/Al(111) and displays a (1 × 2) reconstruction after annealing.",

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T1 - Adsorption of hydrogen on Al(111) and Al(110)

T2 - coverage and temperature dependence of adsorption states

AU - Kondoh, H.

AU - Hara, M.

AU - Domen, K.

AU - Nozoye, H.

PY - 1993/5/10

Y1 - 1993/5/10

N2 - Although hydrogen adsorbed on aluminum surfaces is a simple-looking adsorption system, the interaction between them has been found to be very peculiar; that is, a large amount of aluminum hydride molecules such as Al2H6 and/or AlH3 desorb from H/Al(111), while they desorb hardly from H/Al(110). In order to investigate the adsorption states of hydrogen on the two different aluminum surfaces, we have studied these systems by TPD, LEED, and HREELS. Hydrogen atoms adsorb in the island-growth manner on Al(111) at 85 K from the initial stage of adsorption and form a surface aluminum hydride after annealing the surface. The hydrogen adsorption on Al(110) at 85 K exhibits sequential site filling in contrast to H/Al(111) and displays a (1 × 2) reconstruction after annealing.

AB - Although hydrogen adsorbed on aluminum surfaces is a simple-looking adsorption system, the interaction between them has been found to be very peculiar; that is, a large amount of aluminum hydride molecules such as Al2H6 and/or AlH3 desorb from H/Al(111), while they desorb hardly from H/Al(110). In order to investigate the adsorption states of hydrogen on the two different aluminum surfaces, we have studied these systems by TPD, LEED, and HREELS. Hydrogen atoms adsorb in the island-growth manner on Al(111) at 85 K from the initial stage of adsorption and form a surface aluminum hydride after annealing the surface. The hydrogen adsorption on Al(110) at 85 K exhibits sequential site filling in contrast to H/Al(111) and displays a (1 × 2) reconstruction after annealing.

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Adsorption of hydrogen on Al(111) and Al(110): coverage and temperature dependence of adsorption states

Abstract

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