2021
DOI: 10.1021/acs.energyfuels.1c00203
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Electrocatalytic Efficiency of the Oxidation of Ethylene Glycol, Glycerol, and Glucose under Oscillatory Regime

Abstract: There is an increasing interest in the use of small organic molecules in the interconversion between chemical and electrical energies. Among the strategies to improve the processes of yielding electrical energy in fuel cells and the production of cleaner hydrogen in electrochemical reform, there is the use of kinetic instabilities to improve the conversion and selectivity. Herein, we report on the electrocatalytic efficiency of the oxidation of ethylene glycol, glycerol, and glucose, under regular and oscillat… Show more

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Cited by 21 publications
(19 citation statements)
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“…The glycerol electro‐oxidation has a thermodynamic potential (E 0 ) of −0.81 V (−0.02 V vs . RHE), [33] while for sorbitol it was calculated to be −0.76 V (considering 26 electrons). The overpotentials (E 0 −E o ) found for Pd/Mn 3 O 4 /C were 580 and 470 mV for glycerol and sorbitol oxidations.…”
Section: Resultsmentioning
confidence: 99%
“…The glycerol electro‐oxidation has a thermodynamic potential (E 0 ) of −0.81 V (−0.02 V vs . RHE), [33] while for sorbitol it was calculated to be −0.76 V (considering 26 electrons). The overpotentials (E 0 −E o ) found for Pd/Mn 3 O 4 /C were 580 and 470 mV for glycerol and sorbitol oxidations.…”
Section: Resultsmentioning
confidence: 99%
“…41,42 Though in the literature this is often only explained in terms of binding of an intermediate to the catalyst surface, a more sophisticated treatment of such observations can be found in oscillating electrochemical reactions. [43][44][45][46] Generally, oscillating (electro)chemical reactions, like the Belousov-Zhabotinsky reaction, are based on an auto-catalytic step in the reaction mechanism itself. Such behavior can be described in more simplified reaction schemes/ kinetics like the Bruesselator or the Oregonator.…”
Section: Resultsmentioning
confidence: 99%
“…Known examples include formic acid, formaldehyde, methanol, ethylene glycol, ethanol, glycerol or glucose and their oxidation on Pt. 46 To verify the oscillating behavior of our electrochemical reaction, we performed slow galvanodynamic scans (50 nA/s) and observed the evolution of the potential (Figure S6). Clearly potential oscillations were observed during the current scan, supporting our assumption.…”
Section: Resultsmentioning
confidence: 99%
“…Potential oscillations have been particularly explored to improve the efficiency of low temperature fuel cells and electrolyzers. [46][47][48][49] As already mentioned, exploring the self-organized current/potential oscillations in modified electrodes is important in several applications such as actuators, transducers, and artificial muscles, etc. In the following we discuss some aspects of the potential oscillations, recorded under galvanostatic regime, along the electro-oxidation of HCOOH on different electrode surfaces.…”
Section: Oscillatory Electro-oxidation Of Hcooh On Pt and On Au/pani/...mentioning
confidence: 99%