کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
179580 | 459356 | 2012 | 4 صفحه PDF | دانلود رایگان |
Underpotential deposition of copper on Au(111) is analyzed in the light of first-principles calculations. The existence of a 1 × 1 Cu monolayer on Au(111) at underpotentials can be only understood taking into account the free energy excess delivered by the adsorption of sulfate anions. While a naked copper pseudomorphic monolayer results thermodynamically less stable than bulk copper, accounting for the interaction with sulfate ions delivers an underpotential shift which is comparable with the experimental value.
► Underpotential deposition of copper on Au(111) is analyzed in the light of first-principles calculations.
► The effect of adsorbed sulfate anions on this phenomenon is studied.
► It is concluded that coadsorption of SO4= anions may explain by itself the stability of the Cu 1 × 1 monolayer on Au(111).
Journal: Electrochemistry Communications - Volume 25, November 2012, Pages 54–57