Platinum electrode decorated with three different mixed-ligand cobalt(III) complexes of the general formula [Co(Rdtc)cyclam](ClO4)(2) [cyclam = 1,4,8,11-tetraazacyclotetradecane, Rdtc(-) = morpholine-(Morphdtc), piperidine-(Pipdtc), and 4-methylpiperidine-(4-Mepipdtc) dithiocarbamates, respectively] was used to study oxidation of formic acid in acidic solution. The complexes were adsorbed on differently prepared Pt surfaces, at open circuit potential. The preliminary results show increased catalytic activity of Pt for formic acid oxidation with complex ion adsorbed on the polycrystalline surfaces. The increase in catalytic activity depends on the structure of the complex applied and follows the order of metal-coordinated bidentate ligand as Morphdtc > Pipdtc > 4-Mepipdtc. Based on IR and NMR data, the main characteristics of the Rdtc ligands do not vary dramatically, but high symmetry of the corresponding complexes decreases in the same order. Accordingly, the complexes are distinctive...ly more mobile, causing chemical interactions to occur on the surface with appreciable speed and enhanced selectivity. The effect of the complexes on catalytic activity presumably depends on structural changes on Pt surfaces caused by their adsorption.
Izvor:
Russian Journal of Physical Chemistry A, 2009, 83, 9, 1442-1446
TY - JOUR
AU - Stevanović, Sanja
AU - Babić-Samardžija, Ksenija
AU - Sovilj, Sofija P.
AU - Tripković, Amalija
AU - Jovanović, Vladislava M.
PY - 2009
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/553
AB - Platinum electrode decorated with three different mixed-ligand cobalt(III) complexes of the general formula [Co(Rdtc)cyclam](ClO4)(2) [cyclam = 1,4,8,11-tetraazacyclotetradecane, Rdtc(-) = morpholine-(Morphdtc), piperidine-(Pipdtc), and 4-methylpiperidine-(4-Mepipdtc) dithiocarbamates, respectively] was used to study oxidation of formic acid in acidic solution. The complexes were adsorbed on differently prepared Pt surfaces, at open circuit potential. The preliminary results show increased catalytic activity of Pt for formic acid oxidation with complex ion adsorbed on the polycrystalline surfaces. The increase in catalytic activity depends on the structure of the complex applied and follows the order of metal-coordinated bidentate ligand as Morphdtc > Pipdtc > 4-Mepipdtc. Based on IR and NMR data, the main characteristics of the Rdtc ligands do not vary dramatically, but high symmetry of the corresponding complexes decreases in the same order. Accordingly, the complexes are distinctively more mobile, causing chemical interactions to occur on the surface with appreciable speed and enhanced selectivity. The effect of the complexes on catalytic activity presumably depends on structural changes on Pt surfaces caused by their adsorption.
PB - Maik Nauka/Interperiodica/Springer, New York
T2 - Russian Journal of Physical Chemistry A
T1 - Oxidation of formic acid on platinum surfaces decorated with cobalt(III) macrocyclic complexes
VL - 83
IS - 9
SP - 1442
EP - 1446
DO - 10.1134/S0036024409090040
ER -
@article{
author = "Stevanović, Sanja and Babić-Samardžija, Ksenija and Sovilj, Sofija P. and Tripković, Amalija and Jovanović, Vladislava M.",
year = "2009",
abstract = "Platinum electrode decorated with three different mixed-ligand cobalt(III) complexes of the general formula [Co(Rdtc)cyclam](ClO4)(2) [cyclam = 1,4,8,11-tetraazacyclotetradecane, Rdtc(-) = morpholine-(Morphdtc), piperidine-(Pipdtc), and 4-methylpiperidine-(4-Mepipdtc) dithiocarbamates, respectively] was used to study oxidation of formic acid in acidic solution. The complexes were adsorbed on differently prepared Pt surfaces, at open circuit potential. The preliminary results show increased catalytic activity of Pt for formic acid oxidation with complex ion adsorbed on the polycrystalline surfaces. The increase in catalytic activity depends on the structure of the complex applied and follows the order of metal-coordinated bidentate ligand as Morphdtc > Pipdtc > 4-Mepipdtc. Based on IR and NMR data, the main characteristics of the Rdtc ligands do not vary dramatically, but high symmetry of the corresponding complexes decreases in the same order. Accordingly, the complexes are distinctively more mobile, causing chemical interactions to occur on the surface with appreciable speed and enhanced selectivity. The effect of the complexes on catalytic activity presumably depends on structural changes on Pt surfaces caused by their adsorption.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "Russian Journal of Physical Chemistry A",
title = "Oxidation of formic acid on platinum surfaces decorated with cobalt(III) macrocyclic complexes",
volume = "83",
number = "9",
pages = "1442-1446",
doi = "10.1134/S0036024409090040"
}
Stevanović, S., Babić-Samardžija, K., Sovilj, S. P., Tripković, A.,& Jovanović, V. M.. (2009). Oxidation of formic acid on platinum surfaces decorated with cobalt(III) macrocyclic complexes. in Russian Journal of Physical Chemistry A
Maik Nauka/Interperiodica/Springer, New York., 83(9), 1442-1446.
https://doi.org/10.1134/S0036024409090040
Stevanović S, Babić-Samardžija K, Sovilj SP, Tripković A, Jovanović VM. Oxidation of formic acid on platinum surfaces decorated with cobalt(III) macrocyclic complexes. in Russian Journal of Physical Chemistry A. 2009;83(9):1442-1446.
doi:10.1134/S0036024409090040 .
Stevanović, Sanja, Babić-Samardžija, Ksenija, Sovilj, Sofija P., Tripković, Amalija, Jovanović, Vladislava M., "Oxidation of formic acid on platinum surfaces decorated with cobalt(III) macrocyclic complexes" in Russian Journal of Physical Chemistry A, 83, no. 9 (2009):1442-1446,
https://doi.org/10.1134/S0036024409090040 . .
