Decomposition of water on clean and oxidized aluminum (100)
Yazarlar (2)
Makale Türü Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
Dergi Adı The Journal of Physical Chemistry
Dergi ISSN 0022-3654
Makale Dili – Basım Tarihi 01-1986
Kabul Tarihi – Yayınlanma Tarihi 01-10-1986
Cilt / Sayı / Sayfa 90 / 21 / 5321–5324 DOI 10.1021/j100412a083
Makale Linki https://pubs.acs.org/doi/pdf/10.1021/j100412a083
UAK Araştırma Alanları
Dedektör Teknolojisi
Özet
This study is part of an ongoing effort to make the surfaces of free-electron metals and oxides available for surface studies under ultra-high-vacuum (UHV) conditions. Aluminum is of particular interest because of its high electron density, surpassed only by beryllium, and the intense use of alumina both in catalysis and as an adsorbent. The large sp electron density of the metal gives an effective screening, ie, a short range of perturbations and a pronounced electrostatic barrier at the surface. Further-more, an increased electron density markedly alters the chemisorption potential of, eg, an oxygen atom without invoking hy-bridization with “localized” d states. The first part of this study presents data on the adsorption of water onto clean Al (100). Previous experiments showed not only the formation of hydroxyl species but also the reversible adsorption at the surfaces of relatively low electron density metals like po …
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