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We investigated a Pt(111) electrode covered by two-dimensional nanosized Ru islands and used CO chemisorption, cyclic voltammetry and sum-frequency-generation (SFG) to probe the distribution of CO binding sites on such surfaces. Two distinctive CO species were resolved spectroscopically: Pt(111)/Ru–CO, with CO chemisorbed on the surface ruthenium sites; and Ru/Pt(111)–CO, with CO chemisorbed on the...
This paper reviews surface chemistry of carbon monoxide and methanol in ultra high vacuum (UHV) and in the electrochemical environment on clean and Ru modified Pt single crystal surfaces, and on Pt and Pt/Ru nanoparticles. The results show that CO behaves very similarly in UHV and in the electrochemical environment. Cyclic voltammetry (CV), temperature programmed desorption (TPD) and radioactive labeling...
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