Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Catalytic properties of electrochemically activated polycrystalline gold, Au(poly), modified by spontaneously deposited palladium nanoislands with the coverage below a monolayer were examined for the oxygen reduction reaction (ORR) in alkaline solution using the rotating disc electrode (RDE) technique. Atomic force microscopy (AFM) images have shown that the coverage of randomly distributed nanosized Pd islands ranged from 18% to 77%. Cyclic voltammetry characterization involved hydrogen adsorption/desorption on the deposited Pd islands, as well as their oxidation/reduction at more positive potentials. RDE measurements have shown that, although ORR on Au(poly) proceeds partly through 4e-reduction pathway, in the presence of Pd islands it turns completely to 4e-pathway, exceeding the activity of bare Pd(poly). Among different Pd/Au(poly) nanostructures, the ones with Pd coverage of 18% and 30% have shown the highest activity for ORR in alkaline solution.
Кључне речи:
Au(poly) / Palladium / AFM / XPS / Oxygen reduction / Alkaline solutionИзвор:
Journal of Electroanalytical Chemistry, 2017, 789, 76-84Финансирање / пројекти:
- Функционални, функционализовани и усавршени нано материјали (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45005)
DOI: 10.1016/j.jelechem.2017.02.034
ISSN: 1572-6657; 1873-2569
WoS: 000397695300011
Scopus: 2-s2.0-85014033230
Колекције
Институција/група
VinčaTY - JOUR AU - Štrbac, Svetlana AU - Srejić, Irina AU - Rakočević, Zlatko Lj. PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1484 AB - Catalytic properties of electrochemically activated polycrystalline gold, Au(poly), modified by spontaneously deposited palladium nanoislands with the coverage below a monolayer were examined for the oxygen reduction reaction (ORR) in alkaline solution using the rotating disc electrode (RDE) technique. Atomic force microscopy (AFM) images have shown that the coverage of randomly distributed nanosized Pd islands ranged from 18% to 77%. Cyclic voltammetry characterization involved hydrogen adsorption/desorption on the deposited Pd islands, as well as their oxidation/reduction at more positive potentials. RDE measurements have shown that, although ORR on Au(poly) proceeds partly through 4e-reduction pathway, in the presence of Pd islands it turns completely to 4e-pathway, exceeding the activity of bare Pd(poly). Among different Pd/Au(poly) nanostructures, the ones with Pd coverage of 18% and 30% have shown the highest activity for ORR in alkaline solution. T2 - Journal of Electroanalytical Chemistry T1 - Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution VL - 789 SP - 76 EP - 84 DO - 10.1016/j.jelechem.2017.02.034 ER -
@article{ author = "Štrbac, Svetlana and Srejić, Irina and Rakočević, Zlatko Lj.", year = "2017", abstract = "Catalytic properties of electrochemically activated polycrystalline gold, Au(poly), modified by spontaneously deposited palladium nanoislands with the coverage below a monolayer were examined for the oxygen reduction reaction (ORR) in alkaline solution using the rotating disc electrode (RDE) technique. Atomic force microscopy (AFM) images have shown that the coverage of randomly distributed nanosized Pd islands ranged from 18% to 77%. Cyclic voltammetry characterization involved hydrogen adsorption/desorption on the deposited Pd islands, as well as their oxidation/reduction at more positive potentials. RDE measurements have shown that, although ORR on Au(poly) proceeds partly through 4e-reduction pathway, in the presence of Pd islands it turns completely to 4e-pathway, exceeding the activity of bare Pd(poly). Among different Pd/Au(poly) nanostructures, the ones with Pd coverage of 18% and 30% have shown the highest activity for ORR in alkaline solution.", journal = "Journal of Electroanalytical Chemistry", title = "Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution", volume = "789", pages = "76-84", doi = "10.1016/j.jelechem.2017.02.034" }
Štrbac, S., Srejić, I.,& Rakočević, Z. Lj.. (2017). Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution. in Journal of Electroanalytical Chemistry, 789, 76-84. https://doi.org/10.1016/j.jelechem.2017.02.034
Štrbac S, Srejić I, Rakočević ZL. Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution. in Journal of Electroanalytical Chemistry. 2017;789:76-84. doi:10.1016/j.jelechem.2017.02.034 .
Štrbac, Svetlana, Srejić, Irina, Rakočević, Zlatko Lj., "Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution" in Journal of Electroanalytical Chemistry, 789 (2017):76-84, https://doi.org/10.1016/j.jelechem.2017.02.034 . .