Showing papers by "Juan M. Feliu published in 2000"
TL;DR: In this article, the oxidation of CO adlayers, formed by direct dosing from a CO-saturated solution, and bulk CO has been studied on Pt[ n (111)×(111)] single crystals in 0.5 M H 2 SO 4.
247 citations
TL;DR: In this article, the influence of temperature variation on the COchem oxidative desorption on Pt(111) electrodes is examined, and a distinct shift of COchem stripping peak towards less-positive potentials is observed as the temperature is increased from 273 to 333 K.
Abstract: The influence of temperature variation on the COchem oxidative desorption on Pt(111) electrodes is examined. A distinct shift of the COchem stripping peak towards less-positive potentials is observed as the temperature is increased from 273 to 333 K. Despite the displacement of the desorption peak towards lower potentials, its current density and shape remain unaffected (for T ≤ 318 K), therefore indicating that the oxidation mechanism for the COchem is not influenced by the temperature variation in this particular range. On the other hand, the coverage of the COchem overlayer is clearly influenced by the temperature change. At T ≤ 318 K, the COchem coverage is 0.68 while at T > 318 K there is a sharp decrease in the COchem coverage to 0.54. The linear dependence of the peak potential with the temperature allows us to determine the apparent activation energy of the process which is found to be 132 ± 3 kJ mol-1. This value agrees well with the literature value that proposes that process proceeds with forma...
86 citations
TL;DR: In this paper, the deposition behavior of sulfur, selenium, tellurium and bismuth on the Pt(775) surface has been studied by cyclic voltammetry.
79 citations
TL;DR: The effect of the cooling atmosphere on the rate of CO adlayer oxidation on flame-annealed Pt(111) has been studied in this paper, where three voltammetric peaks were observed for subsaturated CO ad layer oxidation on Pt(1), cooled in Ar+H2 mixture, while only two peaks developed in the case of a Pt(2) surface cooled in air.
78 citations
TL;DR: In this article, local values of potential of zero charge (pzc) and possible zero total charge (Ptztc) were determined for Au(111) surfaces partially covered with palladium at low coverages.
28 citations
TL;DR: Palladium multilayers deposited on Pt(111), Pt(100), and Pt(110) single-crystal electrodes have been characterized by using adsorbed nitric oxide as a probe molecule as discussed by the authors.
Abstract: Palladium multilayers deposited on Pt(111), Pt(100), and Pt(110) single-crystal electrodes have been characterized by using adsorbed nitric oxide as a probe molecule. Nitric oxide adlayers can be e...
23 citations
TL;DR: In this paper, the voltammograms for underpotential deposition of Ag were measured on a stepped surfaces of single-crystal Pt in the series n (111)×(100), n ( 111) ×(110), and n (100)× (111), for various n.
11 citations
Book•
01 Jan 2000
6 citations