The oxidation of ethylene glycol (EG) has been studied on platinum single-crystal surfaces in 0.1 M NaOH. A strong structural dependence of the reaction kinetics was found for all 12 single-crystal orientations investigated. The onset of the reaction occurs in the sequence Pt (110) > Pt (100) ≈ Pt (111). However, the peaks of the voltammetry curves for the low-index planes decrease in the order (111) > (110) > (100). Either the (111) or the (100) oriented steps cause a decrease in the activity of the (111) plane. Surfaces vicinal to the (100) plane exhibit a higher activity than Pt (100). The (111) oriented steps in the Pt (110) plane cause an increase in activity, while the (100) oriented steps decrease it. A parallelism between PtOH layer formation and the onset of the oxidation of EG was found which indicates that the reaction involves interaction of the adsorbed and dehydrogenated EG with Pt(OH)ads species.
TY - JOUR
AU - Marković, Nenad M.
AU - Avramov Ivić, Milka
AU - Marinković, N.S.
AU - Adžić, Radoslav R.
PY - 1991
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4364
AB - The oxidation of ethylene glycol (EG) has been studied on platinum single-crystal surfaces in 0.1 M NaOH. A strong structural dependence of the reaction kinetics was found for all 12 single-crystal orientations investigated. The onset of the reaction occurs in the sequence Pt (110) > Pt (100) ≈ Pt (111). However, the peaks of the voltammetry curves for the low-index planes decrease in the order (111) > (110) > (100). Either the (111) or the (100) oriented steps cause a decrease in the activity of the (111) plane. Surfaces vicinal to the (100) plane exhibit a higher activity than Pt (100). The (111) oriented steps in the Pt (110) plane cause an increase in activity, while the (100) oriented steps decrease it. A parallelism between PtOH layer formation and the onset of the oxidation of EG was found which indicates that the reaction involves interaction of the adsorbed and dehydrogenated EG with Pt(OH)ads species.
PB - Elsevier
T2 - Journal of Electroanalytical Chemistry
T1 - Structural effects in electrocatalysis. Ethylene glycol oxidation on platinum single-crystal surfaces
VL - 312
IS - 1-2
SP - 115
EP - 130
DO - 10.1016/0022-0728(91)85147-H
ER -
@article{
author = "Marković, Nenad M. and Avramov Ivić, Milka and Marinković, N.S. and Adžić, Radoslav R.",
year = "1991",
abstract = "The oxidation of ethylene glycol (EG) has been studied on platinum single-crystal surfaces in 0.1 M NaOH. A strong structural dependence of the reaction kinetics was found for all 12 single-crystal orientations investigated. The onset of the reaction occurs in the sequence Pt (110) > Pt (100) ≈ Pt (111). However, the peaks of the voltammetry curves for the low-index planes decrease in the order (111) > (110) > (100). Either the (111) or the (100) oriented steps cause a decrease in the activity of the (111) plane. Surfaces vicinal to the (100) plane exhibit a higher activity than Pt (100). The (111) oriented steps in the Pt (110) plane cause an increase in activity, while the (100) oriented steps decrease it. A parallelism between PtOH layer formation and the onset of the oxidation of EG was found which indicates that the reaction involves interaction of the adsorbed and dehydrogenated EG with Pt(OH)ads species.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Structural effects in electrocatalysis. Ethylene glycol oxidation on platinum single-crystal surfaces",
volume = "312",
number = "1-2",
pages = "115-130",
doi = "10.1016/0022-0728(91)85147-H"
}
Marković, N. M., Avramov Ivić, M., Marinković, N.S.,& Adžić, R. R.. (1991). Structural effects in electrocatalysis. Ethylene glycol oxidation on platinum single-crystal surfaces. in Journal of Electroanalytical Chemistry
Elsevier., 312(1-2), 115-130.
https://doi.org/10.1016/0022-0728(91)85147-H
Marković NM, Avramov Ivić M, Marinković N, Adžić RR. Structural effects in electrocatalysis. Ethylene glycol oxidation on platinum single-crystal surfaces. in Journal of Electroanalytical Chemistry. 1991;312(1-2):115-130.
doi:10.1016/0022-0728(91)85147-H .
Marković, Nenad M., Avramov Ivić, Milka, Marinković, N.S., Adžić, Radoslav R., "Structural effects in electrocatalysis. Ethylene glycol oxidation on platinum single-crystal surfaces" in Journal of Electroanalytical Chemistry, 312, no. 1-2 (1991):115-130,
https://doi.org/10.1016/0022-0728(91)85147-H . .
