Oxygen reduction reaction (ORR) was studied on polycrystalline Pt and Au electrodes in 0.1 M HClO(4) solutions containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on polycrystalline Pt and Au rotating disc electrodes by a linear sweep voltammetry in oxygen saturated electrolytes. Acetonitrile is chemisorbed on Pt over a wide potential range inhibiting both H adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. Initial potential of oxygen reduction is shifted negatively, while the kinetics of ORR is increasingly hindered with the increase of AcN concentration. Inhibiting effect of acetonitrile on ORR is pronounced on both Pt(poly) and Au(poly). Complete inhibition of ORR in the potential range of AcN chemisorptions is achieved for 0.1 M HClO(4) solution containing 1 M AcN on Au(poly) and 3 M AcN on... Pt(poly).
TY - JOUR
AU - Srejić, Irina
AU - Smiljanić, Milutin
AU - Rakočević, Zlatko Lj.
AU - Štrbac, Svetlana
PY - 2011
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/825
AB - Oxygen reduction reaction (ORR) was studied on polycrystalline Pt and Au electrodes in 0.1 M HClO(4) solutions containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on polycrystalline Pt and Au rotating disc electrodes by a linear sweep voltammetry in oxygen saturated electrolytes. Acetonitrile is chemisorbed on Pt over a wide potential range inhibiting both H adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. Initial potential of oxygen reduction is shifted negatively, while the kinetics of ORR is increasingly hindered with the increase of AcN concentration. Inhibiting effect of acetonitrile on ORR is pronounced on both Pt(poly) and Au(poly). Complete inhibition of ORR in the potential range of AcN chemisorptions is achieved for 0.1 M HClO(4) solution containing 1 M AcN on Au(poly) and 3 M AcN on Pt(poly).
PB - Esg, Belgrade
T2 - International Journal of Electrochemical Science
T1 - Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile
VL - 6
IS - 8
SP - 3344
EP - 3354
UR - https://hdl.handle.net/21.15107/rcub_cer_825
ER -
@article{
author = "Srejić, Irina and Smiljanić, Milutin and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2011",
abstract = "Oxygen reduction reaction (ORR) was studied on polycrystalline Pt and Au electrodes in 0.1 M HClO(4) solutions containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on polycrystalline Pt and Au rotating disc electrodes by a linear sweep voltammetry in oxygen saturated electrolytes. Acetonitrile is chemisorbed on Pt over a wide potential range inhibiting both H adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. Initial potential of oxygen reduction is shifted negatively, while the kinetics of ORR is increasingly hindered with the increase of AcN concentration. Inhibiting effect of acetonitrile on ORR is pronounced on both Pt(poly) and Au(poly). Complete inhibition of ORR in the potential range of AcN chemisorptions is achieved for 0.1 M HClO(4) solution containing 1 M AcN on Au(poly) and 3 M AcN on Pt(poly).",
publisher = "Esg, Belgrade",
journal = "International Journal of Electrochemical Science",
title = "Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile",
volume = "6",
number = "8",
pages = "3344-3354",
url = "https://hdl.handle.net/21.15107/rcub_cer_825"
}
Srejić, I., Smiljanić, M., Rakočević, Z. Lj.,& Štrbac, S.. (2011). Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile. in International Journal of Electrochemical Science
Esg, Belgrade., 6(8), 3344-3354.
https://hdl.handle.net/21.15107/rcub_cer_825
Srejić I, Smiljanić M, Rakočević ZL, Štrbac S. Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile. in International Journal of Electrochemical Science. 2011;6(8):3344-3354.
https://hdl.handle.net/21.15107/rcub_cer_825 .
Srejić, Irina, Smiljanić, Milutin, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile" in International Journal of Electrochemical Science, 6, no. 8 (2011):3344-3354,
https://hdl.handle.net/21.15107/rcub_cer_825 .
