Poison formation reaction from formic acid and methanol on Pt(111) electrodes modified by irreversibly adsorbed Bi and As

摘要: Abstract Dissociative adsorption of formic acid and methanol on adatom-modified Pt(111) electrodes has been carried out as a way studying poison formation reactions these surfaces. The were prepared using irreversible Bi As. A modification the dissociative technique used for studies employed. For clean surfaces behaviour reaction two organic molecules is almost same, but different results are found. As show an important long-range electronic effect which inhibits from at very low adatom coverage. However, methanol, inhibition due to presence adatoms surface can be explained by simple third-body effect. computer simulation Bi-modified in order calculate width domains affected adatoms.