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

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)74-78
Number of pages5
JournalSurface Science
Volume287-288
Issue numberPART 1
DOIs
Publication statusPublished - 1993 May 10
Externally publishedYes

Fingerprint

Aluminum
Hydrogen
aluminum hydrides
Adsorption
temperature dependence
adsorption
hydrogen
Hydrides
Annealing
aluminum
Temperature
annealing
Temperature programmed desorption
hydrogen atoms
Atoms
Molecules
molecules
interactions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Adsorption of hydrogen on Al(111) and Al(110) : coverage and temperature dependence of adsorption states. / Kondoh, Hiroshi; Hara, M.; Domen, K.; Nozoye, H.

In: Surface Science, Vol. 287-288, No. PART 1, 10.05.1993, p. 74-78.

Research output: Contribution to journalArticle

Kondoh, Hiroshi ; Hara, M. ; Domen, K. ; Nozoye, H. / Adsorption of hydrogen on Al(111) and Al(110) : coverage and temperature dependence of adsorption states. In: Surface Science. 1993 ; Vol. 287-288, No. PART 1. pp. 74-78.
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