Photoinduced charge-transfer dissociation of hydrogen halides on silver and potassium

Journal Article · Thu Jul 26 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100378a011· OSTI ID:6187800

Dixon-Warren, S J; Polanyi, J C; Stanners, C D; Xu, G Q ^[1]

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1. Univ. of Toronto, Ontario (Canada)

The photodissociation of HCl(ad) and HI(ad) on Xe/Ag(111) and Xe/K/Ag(111) surfaces at 248, 308, and 350 nm has been studied by measuring the time-of-flight spectra of H atoms recoiling from the surface. In each case, HCl(ad) and HI(ad), the lower work function metal gave photodissociation out to much longer wavelengths, indicative of a charge-transfer mechanism. For HCl(ad) on Xe/K/Ag(111) the photoinduced charge-transfer dissociation occurred at photon energies well below the bond dissociation energy, ruling out direct dissociation of the adsorbate.

• OSTI ID: 6187800
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:15; ISSN JPCHA; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ALKALI METALS
CHARGE TRANSPORT
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
DISSOCIATION
ELEMENTS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IODIDES
IODINE COMPOUNDS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUMERICAL DATA
PHOTOCHEMICAL REACTIONS
POTASSIUM
SILVER
TRANSITION ELEMENTS