The Underpotential Deposition of Copper on Pt(311): Site Selective Deposition and Anion Effects

Electrochemical deposition of copper on stepped platinum surfaces in the [01] zone vicinal to the (100) plane

“…This result evidences the existence of a preferential deposition on (1 0 0) sites, in accordance with a higher stability of copper adsorbed on these sites. A contrasting result was obtained by Gómez et al in a detailed study of the upd of copper on Pt(3 1 1) electrodes [21]. From the evolution of the hydrogen region after deposition of different copper submonolayers in diluted copper solutions, the peak at higher potentials was assigned to deposition on (1 1 1) sites.…”

“…There are comparatively fewer studies of copper upd on more complex platinum surfaces [16][17][18][19][20][21][22][23][24][25][26][27]. The study with stepped surfaces can help to understand the different reactivity of surface sites of different geometry.…”

Underpotential Deposition on Single-Crystal Metals

“…The underpotential deposition of Cu on Pt(311), the surface structure of which is equal to Pt[2(111) × (100)], was investigated and it was found that cyclic voltammogram peaks appeared at different potentials from those of Pt (111) and Pt(100) faces. 85 Rotating ring-disk electrodes were employed for an anion effect on the Cu underpotential deposition on Pt(111) in fluoric and perchloric acid solutions, the results of which were discussed in comparison with UHV results of AES and LEED. [86][87][88] An ex situ EXAFS study was conducted for Cu underpotential deposition on polycrystalline Pt in 0.2mM + 89 The iodine-treated Pt was subjected to Cu underpotential deposition, the features of which were observed by EXAFS.…”

“…124 The effects of and were observed on Pt(311) in sulfuric acid solution, giving complicated cyclic voltammogram features. 85 The effects of thiourea, acetonitrile, and polyethylene glycol on Cu underpotential deposition were investigated by EQCM and visible reflectance spectroscopy. 125 The effect of on Cu underpotential deposition at Pt was studied by AES, LEED, RRDE, and X-ray scattering methods.…”

Phase Transitions in Two‐dimensional Adlayers at Electrode Surfaces: Thermodynamics, Kinetics, and Structural Aspects

“…The UPD of Cu on Pt(hkl) has been studied by electrochemical techniques [375][376][377][378][379][380][381][382][383][384][385][386], electroreflectance [375], radioactive labeling [387,388], IR-spectroscopy [389,390], electrochemical quartz crystal microbalance (EQCM) [391], in situ STM [389,[392][393][394][395][396], and a variety of X-ray techniques [200,385,[397][398][399][400][401], as well as ex situ UHV-methods such as LEED, AES, and XPS [389,399,[402][403][404][405][406]. Figure 21 shows a slow scan voltammogram of Cu-UPD on a high-quality [390,395,396] and SXS [408], and is in agreement with ex situ XPS and LEED investigations [389,390,402].…”