Surface processes on Pt4Mo alloy well-defined by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were studied in acid solution by cyclic voltammetry. It was established that Mo in the alloy is much more resistant toward electrochemical dissolution than pure Mo. During the potential cycling of Pt4Mo surfaces in completely quiescent electrolyte, hydrous Mo-oxide could be generated on Mo sites. Investigation of the formic acid oxidation revealed that this type of Mo-oxide enhances the reaction rate by more than I order of magnitude with respect to pure Pt. Surface poisoning by COads is significantly lower on Pt4Mo alloy than on pure Pt. The effect of hydrous Mo-oxide on the HCOOH oxidation rate was explained through the facilitated removal of the poisoning species and through its possible influence on the intrinsic rate of the direct reaction path.
TY - JOUR
AU - Gojković, Snežana
AU - Tripković, Amalija
AU - Stevanović, Rade M.
AU - Krstajić, Nedeljko V.
PY - 2007
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1153
AB - Surface processes on Pt4Mo alloy well-defined by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were studied in acid solution by cyclic voltammetry. It was established that Mo in the alloy is much more resistant toward electrochemical dissolution than pure Mo. During the potential cycling of Pt4Mo surfaces in completely quiescent electrolyte, hydrous Mo-oxide could be generated on Mo sites. Investigation of the formic acid oxidation revealed that this type of Mo-oxide enhances the reaction rate by more than I order of magnitude with respect to pure Pt. Surface poisoning by COads is significantly lower on Pt4Mo alloy than on pure Pt. The effect of hydrous Mo-oxide on the HCOOH oxidation rate was explained through the facilitated removal of the poisoning species and through its possible influence on the intrinsic rate of the direct reaction path.
PB - Amer Chemical Soc, Washington
T2 - Langmuir
T1 - High activity of Pt4Mo alloy for the electrochemical oxidation of formic acid
EP - 12764
IS - 25
SP - 12760
VL - 23
DO - 10.1021/la702344s
ER -
@article{
author = "Gojković, Snežana and Tripković, Amalija and Stevanović, Rade M. and Krstajić, Nedeljko V.",
year = "2007",
abstract = "Surface processes on Pt4Mo alloy well-defined by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were studied in acid solution by cyclic voltammetry. It was established that Mo in the alloy is much more resistant toward electrochemical dissolution than pure Mo. During the potential cycling of Pt4Mo surfaces in completely quiescent electrolyte, hydrous Mo-oxide could be generated on Mo sites. Investigation of the formic acid oxidation revealed that this type of Mo-oxide enhances the reaction rate by more than I order of magnitude with respect to pure Pt. Surface poisoning by COads is significantly lower on Pt4Mo alloy than on pure Pt. The effect of hydrous Mo-oxide on the HCOOH oxidation rate was explained through the facilitated removal of the poisoning species and through its possible influence on the intrinsic rate of the direct reaction path.",
publisher = "Amer Chemical Soc, Washington",
journal = "Langmuir",
title = "High activity of Pt4Mo alloy for the electrochemical oxidation of formic acid",
pages = "12764-12760",
number = "25",
volume = "23",
doi = "10.1021/la702344s"
}
Gojković, S., Tripković, A., Stevanović, R. M.,& Krstajić, N. V.. (2007). High activity of Pt4Mo alloy for the electrochemical oxidation of formic acid. in Langmuir
Amer Chemical Soc, Washington., 23(25), 12760-12764.
https://doi.org/10.1021/la702344s
Gojković S, Tripković A, Stevanović RM, Krstajić NV. High activity of Pt4Mo alloy for the electrochemical oxidation of formic acid. in Langmuir. 2007;23(25):12760-12764.
doi:10.1021/la702344s .
Gojković, Snežana, Tripković, Amalija, Stevanović, Rade M., Krstajić, Nedeljko V., "High activity of Pt4Mo alloy for the electrochemical oxidation of formic acid" in Langmuir, 23, no. 25 (2007):12760-12764,
https://doi.org/10.1021/la702344s . .
