The hydrogen oxidation reaction (HOR) was studied at the home made TiOx-Pt/C nanocatalysts in 0.5 mol dm(-3) HClO4 at 25 degrees C. Pt/C catalyst was first synthesized by modified ethylene glycol method (EG) on commercially used carbon support (Vulcan XC-72). Then TiOx-Pt/C catalyst was prepared by the polyole method followed by TiOx post-deposition. The synthesized catalyst was characterized by XRD, TEM and EDX techniques. It was found that Pt/C catalyst nanoparticles were homogenously distributed over carbon support with the mean particle size of about 2.4 nm. The quite similar, homogenous distribution and particle size were obtained for Pt/C doped by TiOx catalyst which was the confirmation that TiOx post-deposition did not lead to significant growth of the Pt nanoparticles. The electrochemically active surface area of the catalyst was determined by using the cyclic voltammetry technique. The kinetics of hydrogen oxidation was investigated by the linear sweep voltammetry technique a...t the rotating disc electrode (RDE). The kinetic equations used for the analysis were derived considering the reversible or irreversible nature of the kinetics of the HOR. It was found that the hydrogen oxidation reaction for an investigated catalyst proceeded as an electrochemically reversible reaction. The values determined for the kinetic parameters-Tafel slope of 28 mV dec(-1) and exchange current density about 0.4 mA cm(Pt)(-2) are in good agreement with usually reported values for a hydrogen oxidation reaction with platinum catalysts in acid solutions.
TY - JOUR
AU - Elezović, Nevenka R.
AU - Babić, Biljana M.
AU - Vračar, Ljiljana M
AU - Radmilović, Velimir R
AU - Krstajić, Nedeljko V
PY - 2009
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/352
AB - The hydrogen oxidation reaction (HOR) was studied at the home made TiOx-Pt/C nanocatalysts in 0.5 mol dm(-3) HClO4 at 25 degrees C. Pt/C catalyst was first synthesized by modified ethylene glycol method (EG) on commercially used carbon support (Vulcan XC-72). Then TiOx-Pt/C catalyst was prepared by the polyole method followed by TiOx post-deposition. The synthesized catalyst was characterized by XRD, TEM and EDX techniques. It was found that Pt/C catalyst nanoparticles were homogenously distributed over carbon support with the mean particle size of about 2.4 nm. The quite similar, homogenous distribution and particle size were obtained for Pt/C doped by TiOx catalyst which was the confirmation that TiOx post-deposition did not lead to significant growth of the Pt nanoparticles. The electrochemically active surface area of the catalyst was determined by using the cyclic voltammetry technique. The kinetics of hydrogen oxidation was investigated by the linear sweep voltammetry technique at the rotating disc electrode (RDE). The kinetic equations used for the analysis were derived considering the reversible or irreversible nature of the kinetics of the HOR. It was found that the hydrogen oxidation reaction for an investigated catalyst proceeded as an electrochemically reversible reaction. The values determined for the kinetic parameters-Tafel slope of 28 mV dec(-1) and exchange current density about 0.4 mA cm(Pt)(-2) are in good agreement with usually reported values for a hydrogen oxidation reaction with platinum catalysts in acid solutions.
PB - Royal Soc Chemistry, Cambridge
T2 - Physical Chemistry Chemical Physics
T1 - Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction
EP - 5197
IS - 25
SP - 5192
VL - 11
DO - 10.1039/b822249e
ER -
@article{
author = "Elezović, Nevenka R. and Babić, Biljana M. and Vračar, Ljiljana M and Radmilović, Velimir R and Krstajić, Nedeljko V",
year = "2009",
abstract = "The hydrogen oxidation reaction (HOR) was studied at the home made TiOx-Pt/C nanocatalysts in 0.5 mol dm(-3) HClO4 at 25 degrees C. Pt/C catalyst was first synthesized by modified ethylene glycol method (EG) on commercially used carbon support (Vulcan XC-72). Then TiOx-Pt/C catalyst was prepared by the polyole method followed by TiOx post-deposition. The synthesized catalyst was characterized by XRD, TEM and EDX techniques. It was found that Pt/C catalyst nanoparticles were homogenously distributed over carbon support with the mean particle size of about 2.4 nm. The quite similar, homogenous distribution and particle size were obtained for Pt/C doped by TiOx catalyst which was the confirmation that TiOx post-deposition did not lead to significant growth of the Pt nanoparticles. The electrochemically active surface area of the catalyst was determined by using the cyclic voltammetry technique. The kinetics of hydrogen oxidation was investigated by the linear sweep voltammetry technique at the rotating disc electrode (RDE). The kinetic equations used for the analysis were derived considering the reversible or irreversible nature of the kinetics of the HOR. It was found that the hydrogen oxidation reaction for an investigated catalyst proceeded as an electrochemically reversible reaction. The values determined for the kinetic parameters-Tafel slope of 28 mV dec(-1) and exchange current density about 0.4 mA cm(Pt)(-2) are in good agreement with usually reported values for a hydrogen oxidation reaction with platinum catalysts in acid solutions.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Physical Chemistry Chemical Physics",
title = "Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction",
pages = "5197-5192",
number = "25",
volume = "11",
doi = "10.1039/b822249e"
}
Elezović, N. R., Babić, B. M., Vračar, L. M., Radmilović, V. R.,& Krstajić, N. V.. (2009). Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction. in Physical Chemistry Chemical Physics
Royal Soc Chemistry, Cambridge., 11(25), 5192-5197.
https://doi.org/10.1039/b822249e
Elezović NR, Babić BM, Vračar LM, Radmilović VR, Krstajić NV. Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction. in Physical Chemistry Chemical Physics. 2009;11(25):5192-5197.
doi:10.1039/b822249e .
Elezović, Nevenka R., Babić, Biljana M., Vračar, Ljiljana M, Radmilović, Velimir R, Krstajić, Nedeljko V, "Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction" in Physical Chemistry Chemical Physics, 11, no. 25 (2009):5192-5197,
https://doi.org/10.1039/b822249e . .
