Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction
Апстракт
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.
Извор:
Physical Chemistry Chemical Physics, 2009, 11, 25, 5192-5197Финансирање / пројекти:
- Ministry of Science and Technological Development, Republic of Serbia [142038]
DOI: 10.1039/b822249e
ISSN: 1463-9076
PubMed: 19562154
WoS: 000267499400034
Scopus: 2-s2.0-67650099710
Колекције
Институција/група
VinčaTY - JOUR AU - Elezovic, N. R. AU - Babić, Biljana M. AU - Vracar, Lj. M. AU - Radmilovíć, Velimir R. AU - Krstajic, N. V. PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3730 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. T2 - Physical Chemistry Chemical Physics T1 - Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction VL - 11 IS - 25 SP - 5192 EP - 5197 DO - 10.1039/b822249e ER -
@article{ author = "Elezovic, N. R. and Babić, Biljana M. and Vracar, Lj. M. and Radmilovíć, Velimir R. and Krstajic, N. 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.", journal = "Physical Chemistry Chemical Physics", title = "Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction", volume = "11", number = "25", pages = "5192-5197", doi = "10.1039/b822249e" }
Elezovic, N. R., Babić, B. M., Vracar, Lj. M., Radmilovíć, V. R.,& Krstajic, N. V.. (2009). Preparation and characterization TiOx-Pt/C catalyst for hydrogen oxidation reaction. in Physical Chemistry Chemical Physics, 11(25), 5192-5197. https://doi.org/10.1039/b822249e
Elezovic NR, Babić BM, Vracar LM, Radmilovíć VR, Krstajic 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 .
Elezovic, N. R., Babić, Biljana M., Vracar, Lj. M., Radmilovíć, Velimir R., Krstajic, N. 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 . .