TY  - CONF
AU  - Ristić, Nikola
AU  - Kotorcević, M
AU  - Lačnjevac, Časlav
AU  - Jokić, AM
AU  - Jaksić, MM
PY  - 2000
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/229
AB  - Three distinct potentiodynamic features have been scanned on cyclic voltammograms in the presence of simple (formaldehyde, acetaldehyde), and some specific (cinnam aldehyde, croton aldehyde, furfural and benzaldehyde) aldehydes: (a) anodic oxidation of aldehyde group proceeds as a direct heterogeneous reaction with weakly or reversibly adsorbed OH-adatomic group, or in overall, as an electrode kinetics similar to Volmer-Heyrovsky mechanism for hydrogen evolution (R-CHO + 2M-OH double right arrow R-COOH + H2O + 2M + 2e), which is practically the same as the Lamy mechanism; (b) as the result, the oxide growth upon Pt, Pd, Au electrode substrates becomes prevailingly or partially prevented and reflects in the proportionally reduced charge capacity for its desorption peak, and (c) the consequence of the latter represents the unusual, but sharply pronounced reverse current jump into anodic range with peaks of repeated aldehyde oxidation during reversal potential scans towards hydrogen evolving limits. Aldehyde reduction, except on Au and Hg, occurs as the heterogeneous catalytic reaction with adsorbed H-adatoms and appears competitive with hydrogen evolution, and while being for about two order of magnitude faster than H-adatom recombination, at lower current densities (about 10 mA cm(-2)) yields rather high current efficiencies (above 90%). Oxygen evolution proceeds along with aldehyde oxidation and only at rather high positive potentials prevails in both surface oxide formation and thereby reduced rate in carboxylic acid production. At extremely positive anodic potentials on Au electrode, there appears a distinct peak of carboxylic group oxidation with release of CO2, preceding oxygen evolution, or occurring along with the latter.
PB  - Pergamon-Elsevier Science Ltd, Oxford
C3  - Electrochimica Acta
T1  - Some specific potentiodynamic behaviour of certain aldehydes and monosaccharides - Some simple and some specific aldehydes
EP  - 2989
IS  - 18
SP  - 2973
VL  - 45
DO  - 10.1016/S0013-4686(00)00376-5
ER  - 

@conference{
author = "Ristić, Nikola and Kotorcević, M and Lačnjevac, Časlav and Jokić, AM and Jaksić, MM",
year = "2000",
abstract = "Three distinct potentiodynamic features have been scanned on cyclic voltammograms in the presence of simple (formaldehyde, acetaldehyde), and some specific (cinnam aldehyde, croton aldehyde, furfural and benzaldehyde) aldehydes: (a) anodic oxidation of aldehyde group proceeds as a direct heterogeneous reaction with weakly or reversibly adsorbed OH-adatomic group, or in overall, as an electrode kinetics similar to Volmer-Heyrovsky mechanism for hydrogen evolution (R-CHO + 2M-OH double right arrow R-COOH + H2O + 2M + 2e), which is practically the same as the Lamy mechanism; (b) as the result, the oxide growth upon Pt, Pd, Au electrode substrates becomes prevailingly or partially prevented and reflects in the proportionally reduced charge capacity for its desorption peak, and (c) the consequence of the latter represents the unusual, but sharply pronounced reverse current jump into anodic range with peaks of repeated aldehyde oxidation during reversal potential scans towards hydrogen evolving limits. Aldehyde reduction, except on Au and Hg, occurs as the heterogeneous catalytic reaction with adsorbed H-adatoms and appears competitive with hydrogen evolution, and while being for about two order of magnitude faster than H-adatom recombination, at lower current densities (about 10 mA cm(-2)) yields rather high current efficiencies (above 90%). Oxygen evolution proceeds along with aldehyde oxidation and only at rather high positive potentials prevails in both surface oxide formation and thereby reduced rate in carboxylic acid production. At extremely positive anodic potentials on Au electrode, there appears a distinct peak of carboxylic group oxidation with release of CO2, preceding oxygen evolution, or occurring along with the latter.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Some specific potentiodynamic behaviour of certain aldehydes and monosaccharides - Some simple and some specific aldehydes",
pages = "2989-2973",
number = "18",
volume = "45",
doi = "10.1016/S0013-4686(00)00376-5"
}

Ristić, N., Kotorcević, M., Lačnjevac, Č., Jokić, A.,& Jaksić, M.. (2000). Some specific potentiodynamic behaviour of certain aldehydes and monosaccharides - Some simple and some specific aldehydes. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 45(18), 2973-2989.
https://doi.org/10.1016/S0013-4686(00)00376-5

Ristić N, Kotorcević M, Lačnjevac Č, Jokić A, Jaksić M. Some specific potentiodynamic behaviour of certain aldehydes and monosaccharides - Some simple and some specific aldehydes. in Electrochimica Acta. 2000;45(18):2973-2989.
doi:10.1016/S0013-4686(00)00376-5 .

Ristić, Nikola, Kotorcević, M, Lačnjevac, Časlav, Jokić, AM, Jaksić, MM, "Some specific potentiodynamic behaviour of certain aldehydes and monosaccharides - Some simple and some specific aldehydes" in Electrochimica Acta, 45, no. 18 (2000):2973-2989,
https://doi.org/10.1016/S0013-4686(00)00376-5 . .

TY  - JOUR
AU  - Ristić, Nikola
AU  - Lačnjevac, Časlav
AU  - Jokić, AM
AU  - Tsiplakides, D
AU  - Jaksić, MM
PY  - 1997
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/112
AB  - Two distinct specific features have been clearly observed and recorded by cyclic voltammetry in alkaline aldehyde (typical simple aldehydes and monosaccharides) solutions: (a) Heterogeneous reaction of aldehyde group hydrogenation at its higher concentrations removes hydrogen adsorption and desorption peaks in cyclic voltammograms and provides rather high (over 90 percent) current efficiencies at remarkably high current densities (even above 10 mA cm(-2)) for corresponding alcohol yields; and (b) anodic oxidation of the aldehyde group by its specific electrode reaction mechanism suppresses and even prevents any surface oxide growth at noble metal substrates, and thereby creates a new reverse current jump in the anodic range of repeated aldehyde oxidation within the same cycle during the reversal potential scan towards the hydrogen evolution limits. For various aldehydes, including monosaccharides, the surface oxide desorption peak clearly depends in its charge capacity on the rate of oxidation of the aldehyde groups for each individual reactant and/or the number of adsorbed aldehyde groups per unit area of the electrode surface: the smallest was in the presence of formaldehyde, the largest with d-fructose.
T2  - Russian Journal of Electrochemistry
T1  - Certain specific electrochemical behaviour of some aldehydes. Potentiodynamic investigations
EP  - 725
IS  - 7
SP  - 714
VL  - 33
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_112
ER  - 

@article{
author = "Ristić, Nikola and Lačnjevac, Časlav and Jokić, AM and Tsiplakides, D and Jaksić, MM",
year = "1997",
abstract = "Two distinct specific features have been clearly observed and recorded by cyclic voltammetry in alkaline aldehyde (typical simple aldehydes and monosaccharides) solutions: (a) Heterogeneous reaction of aldehyde group hydrogenation at its higher concentrations removes hydrogen adsorption and desorption peaks in cyclic voltammograms and provides rather high (over 90 percent) current efficiencies at remarkably high current densities (even above 10 mA cm(-2)) for corresponding alcohol yields; and (b) anodic oxidation of the aldehyde group by its specific electrode reaction mechanism suppresses and even prevents any surface oxide growth at noble metal substrates, and thereby creates a new reverse current jump in the anodic range of repeated aldehyde oxidation within the same cycle during the reversal potential scan towards the hydrogen evolution limits. For various aldehydes, including monosaccharides, the surface oxide desorption peak clearly depends in its charge capacity on the rate of oxidation of the aldehyde groups for each individual reactant and/or the number of adsorbed aldehyde groups per unit area of the electrode surface: the smallest was in the presence of formaldehyde, the largest with d-fructose.",
journal = "Russian Journal of Electrochemistry",
title = "Certain specific electrochemical behaviour of some aldehydes. Potentiodynamic investigations",
pages = "725-714",
number = "7",
volume = "33",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_112"
}

Ristić, N., Lačnjevac, Č., Jokić, A., Tsiplakides, D.,& Jaksić, M.. (1997). Certain specific electrochemical behaviour of some aldehydes. Potentiodynamic investigations. in Russian Journal of Electrochemistry, 33(7), 714-725.
https://hdl.handle.net/21.15107/rcub_agrospace_112

Ristić N, Lačnjevac Č, Jokić A, Tsiplakides D, Jaksić M. Certain specific electrochemical behaviour of some aldehydes. Potentiodynamic investigations. in Russian Journal of Electrochemistry. 1997;33(7):714-725.
https://hdl.handle.net/21.15107/rcub_agrospace_112 .

Ristić, Nikola, Lačnjevac, Časlav, Jokić, AM, Tsiplakides, D, Jaksić, MM, "Certain specific electrochemical behaviour of some aldehydes. Potentiodynamic investigations" in Russian Journal of Electrochemistry, 33, no. 7 (1997):714-725,
https://hdl.handle.net/21.15107/rcub_agrospace_112 .