Activity of a PtBi alloy in the electrochemical oxidation of formic acid
Само за регистроване кориснике
2006
Чланак у часопису (Објављена верзија)

Метаподаци
Приказ свих података о документуАпстракт
Formic acid oxidation in acid solution was examined on a PtBi alloy characterized by X-ray photoelectron spectroscopy. Three chemical states of Bi, i.e., PtBi or Bi(0), Bi2O3 and BiO(OH) were found. Electrochemical characterization revealed that PtBi follows the behavior of its constituents, as well as that Bi is not stable in the PtBi alloy. It was established that the activity of PtBi is highly dependent of the reduction/oxidation of Bi species. Oxidation of formic acid does not occur on Bi covered PtBi. Rotated PtBi showed impressive activity relative to polycrystalline Pt, with the onset potential shifted by 0.25 V towards more negative potentials, and attained steady state current densities at 0.05 V, higher by two and half orders of magnitude. The activity of PtBi is caused by UPD phenomena of Bi on Pt, which was electrochemically detected. In addition, based on XPS analysis, it is proposed that the activity of PtBi could also be caused by the bifunctional action of hydroxylated ...Bi species.
Кључне речи:
Formic acid / Electrochemical oxidation / Pt–Bi alloy / Bi UPD / XPS characterization / Fuel cellsИзвор:
Electrochemistry Communication, 2006, 8, 9, 1492-1498Издавач:
- Elsevier
Финансирање / пројекти:
DOI: 10.1016/j.elecom.2006.07.005
ISSN: 1388-2481
WoS: 000240796300015
Scopus: 2-s2.0-33748446082
Институција/група
IHTMTY - JOUR AU - Tripković, Amalija AU - Popović, Ksenija AU - Stevanović, Rade M. AU - Socha, R. AU - Kowal, Andrzej PY - 2006 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2879 AB - Formic acid oxidation in acid solution was examined on a PtBi alloy characterized by X-ray photoelectron spectroscopy. Three chemical states of Bi, i.e., PtBi or Bi(0), Bi2O3 and BiO(OH) were found. Electrochemical characterization revealed that PtBi follows the behavior of its constituents, as well as that Bi is not stable in the PtBi alloy. It was established that the activity of PtBi is highly dependent of the reduction/oxidation of Bi species. Oxidation of formic acid does not occur on Bi covered PtBi. Rotated PtBi showed impressive activity relative to polycrystalline Pt, with the onset potential shifted by 0.25 V towards more negative potentials, and attained steady state current densities at 0.05 V, higher by two and half orders of magnitude. The activity of PtBi is caused by UPD phenomena of Bi on Pt, which was electrochemically detected. In addition, based on XPS analysis, it is proposed that the activity of PtBi could also be caused by the bifunctional action of hydroxylated Bi species. PB - Elsevier T2 - Electrochemistry Communication T1 - Activity of a PtBi alloy in the electrochemical oxidation of formic acid VL - 8 IS - 9 SP - 1492 EP - 1498 DO - 10.1016/j.elecom.2006.07.005 ER -
@article{ author = "Tripković, Amalija and Popović, Ksenija and Stevanović, Rade M. and Socha, R. and Kowal, Andrzej", year = "2006", abstract = "Formic acid oxidation in acid solution was examined on a PtBi alloy characterized by X-ray photoelectron spectroscopy. Three chemical states of Bi, i.e., PtBi or Bi(0), Bi2O3 and BiO(OH) were found. Electrochemical characterization revealed that PtBi follows the behavior of its constituents, as well as that Bi is not stable in the PtBi alloy. It was established that the activity of PtBi is highly dependent of the reduction/oxidation of Bi species. Oxidation of formic acid does not occur on Bi covered PtBi. Rotated PtBi showed impressive activity relative to polycrystalline Pt, with the onset potential shifted by 0.25 V towards more negative potentials, and attained steady state current densities at 0.05 V, higher by two and half orders of magnitude. The activity of PtBi is caused by UPD phenomena of Bi on Pt, which was electrochemically detected. In addition, based on XPS analysis, it is proposed that the activity of PtBi could also be caused by the bifunctional action of hydroxylated Bi species.", publisher = "Elsevier", journal = "Electrochemistry Communication", title = "Activity of a PtBi alloy in the electrochemical oxidation of formic acid", volume = "8", number = "9", pages = "1492-1498", doi = "10.1016/j.elecom.2006.07.005" }
Tripković, A., Popović, K., Stevanović, R. M., Socha, R.,& Kowal, A.. (2006). Activity of a PtBi alloy in the electrochemical oxidation of formic acid. in Electrochemistry Communication Elsevier., 8(9), 1492-1498. https://doi.org/10.1016/j.elecom.2006.07.005
Tripković A, Popović K, Stevanović RM, Socha R, Kowal A. Activity of a PtBi alloy in the electrochemical oxidation of formic acid. in Electrochemistry Communication. 2006;8(9):1492-1498. doi:10.1016/j.elecom.2006.07.005 .
Tripković, Amalija, Popović, Ksenija, Stevanović, Rade M., Socha, R., Kowal, Andrzej, "Activity of a PtBi alloy in the electrochemical oxidation of formic acid" in Electrochemistry Communication, 8, no. 9 (2006):1492-1498, https://doi.org/10.1016/j.elecom.2006.07.005 . .