Studies of molecular oxygen adsorbed on Cu surfaces |
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| Affiliation: | 1. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA;2. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China;3. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;4. The State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China |
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| Abstract: | 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 π1π1 transition in the Auger spectrum. |
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