Studies of molecular oxygen adsorbed on Cu surfaces

Prabhakaran, K. ; Sen, P. ; Rao, C. N. R. (1986) Studies of molecular oxygen adsorbed on Cu surfaces Surface Science, 177 (2). L971-L977. ISSN 0039-6028

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Molecular oxygen adsorbed on (110) and polycrystalline Cu surfaces has been investigated by UPS, XPS, AES, HREELS and LEED. Molecularly adsorbed O2 on the (110) surface shows the characteristic three-peak He II spectrum due to πg, πu and σg orbitals, accompanied by an O-O stretching frequency at 660 cm−1. On the polycrystalline Cu surface, adsorbed O2 shows the three peak He II spectra with a considerably smaller separation between the πu and σg band and two O-O stretching bands at 610 and 880 cm−1. O2 adsorbed on the Cu(110) surface gives rise to a (1×1) LEED pattern and characteristic K ππ transition in the Auger spectrum.

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