Electro-Oxidation of Ethylene Glycol on a Pt-Film Electrode Studied by Combined in Situ Infrared Spectroscopy and Online Mass Spectrometry

Schnaidt, Johannes; Heinen, Martin; Jusys, Z.; Behm, R. Jürgen

doi:10.1021/jp208162q

Cited by 50 publications

(117 citation statements)

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“…These results point out that the presence of steps catalyze the EG oxidation to glycolic acid and CO 2 rather than the formation of oxalic acid/bioxalate, which seems to take place on the long terraces of the Pt(111) electrode. This can explain the conclusions reported on polycrystalline Pt-film electrodes [12].…”

Section: Accepted M Manuscriptsupporting

confidence: 79%

“…The formation of this latter molecule is corroborated by the presence of the band at 1398 cm -1 , assigned to adsorbed glycolate [9,10]. The band at 1640 cm -1 , corresponding to the bending mode of water, is present in all the spectra, and can hide the band associated to  as (OCO) mode of bioxalate, which appears at 1635 cm -1 [11] as well as that of 2-hydroxyacetyl [12,13]. It was proposed that oxalate comes from further adsorption and oxidation of glycolate to oxalate [14] and that 2-hydroxyacetyl is the precursor of CO. Fig.…”

Section: Spectroelectrochemical Resultsmentioning

confidence: 71%

“…In this solvent, a weak band at 1639 cm -1 was observed at 0.6 V in the negative-going sweep, pointing out the formation of bioxalate. This product was not found on polycrystalline Pt [12]. Since the oxidation of oxalic acid to CO 2 only occurs at potentials above 1.1 V [15], the oxidation currents in the negative-going sweep have to be related to the oxidation of EG to CO 2 and glycolic acid, which would generate adsorbed glycolate, and its further oxidation to CO 2 and oxalic acid/bioxalate.…”

Section: Accepted M Manuscriptmentioning

confidence: 93%

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The breaking of the CC bond in ethylene glycol oxidation at the Pt(111) electrode and its vicinal surfaces

Arán‐Ais¹,

Herrero²,

Feliu³

2014

Electrochemistry Communications

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Please cite this article as: Rosa M. Arán-Ais, Enrique Herrero, Juan M. Feliu, The breaking of the C-C bond in ethylene glycol oxidation at the Pt(111) electrode and its vicinal surfaces, Electrochemistry Communications (2014Communications ( ), doi: 10.1016Communications ( /j.elecom.2014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTThe breaking of the C-C bond in ethylene glycol oxidation at the Pt (111) AbstractEthylene glycol (EG) oxidation has been studied on Pt(111) and its vicinal surfaces in acidic media by cyclic voltammetry and infrared spectroscopy. Even at Pt(111) the C-C bond is readily broken and CO is formed at low potentials. Both types of steps catalyze the EG oxidation to CO 2 , being the {110} steps the most catalytic for the splitting of the C-C bond. Spectroscopic results show that glycolic acid and oxalic acid are produced mainly at the close-packed terraces.

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Section: Accepted M Manuscriptsupporting

confidence: 79%

Section: Spectroelectrochemical Resultsmentioning

confidence: 71%

Section: Accepted M Manuscriptmentioning

confidence: 93%

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The breaking of the CC bond in ethylene glycol oxidation at the Pt(111) electrode and its vicinal surfaces

Arán‐Ais¹,

Herrero²,

Feliu³

2014

Electrochemistry Communications

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“…To alleviate the effect of surface CO ads poisoning and change the rate determining step for aldehyde oxidation on Pt surfaces it is beneficial to undertake the reaction at pH N 12 which has been reported to substantially decrease the formation of adsorbed carbonaceous species that inhibit the reaction [37,38] as well as take advantage of a solutionmediated base catalysed reaction step [74]. Illustrated in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In particular the study of small organic molecules such as methanol and ethylene glycol are of interest due to their potential use in direct oxidation fuel cells [31][32][33][34][35][36][37][38]. There have been many interesting insights discovered regarding structure-activity relationships for this material on low index basal planes, stepped surfaces and high energy facets and the link between these observations and chemically synthesised nanoparticles of different size and shape [39][40][41][42][43][44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Utilising solution dispersed platinum nanoparticles to direct the growth of electrodeposited platinum nanostructures and its influence on the electrocatalytic oxidation of small organic molecules

Lertanantawong

Surareungchai

O’Mullane

2016

Journal of Electroanalytical Chemistry

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The electrodeposition of platinum nanostructures on glassy carbon electrodes in the absence and presence of platinum nanoparticles in the electrolyte is reported. It is found that the presence of platinum nanoparticles has a significant influence of the morphology of the platinum electrodeposited onto the electrode surface. Even though the morphology of the materials is affected, the overall surface area is similar. The electrochemical behaviour of the platinum nanostructures is investigated in 1 M H 2 SO 4 where distinct differences are observed in the exposed surface sites for platinum electrodeposited in the presence of nanoparticles. The influence of these surface sites is then studied for a variety of electrocatalytic reactions such as methanol and ethylene glycol oxidation and the hydrogen evolution reaction. In the case of organic molecule oxidation reactions, the platinum structures created using platinum nanoparticles in the electrodeposition solution exhibited earlier onset potentials and increased current densities compared to those that were electrodeposited in their absence.

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Ultrasmall Pd‐Cu‐Pt Trimetallic Twin Icosahedrons Boost the Electrocatalytic Performance of Glycerol Oxidation at the Operating Temperature of Fuel Cells

Yang

Yuan

et al. 2020

Adv Funct Materials

108

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Recently, in order to improve the energy conversion efficiency of direct polyol fuel cells, the engineering of effective Pd‐ and/or Pt‐based electrocatalysts to rupture CC bonds has received increasing attention. Here, an example is shown to synthesize highly uniform sub‐10 nm Pd‐Cu‐Pt twin icosahedrons by controlling the nucleation phase. Because of the synergies of the electronic effect, synergistic effect, geometric effect, and abundant surface active sites originating from the formation of near surface alloy and special icosahedral shape, the Pd‐Cu‐Pt twin icosahedrons exhibit excellent electrocatalytic performance in glycerol electrocatalysis at the operating temperature of direct alcohol fuel cells (70 °C) in KOH electrolyte. The Pd50.2Cu38.4Pt11.4 icosahedrons show mass activities of 9.7 A mg−1Pd+Pt and 13.7 A mg−1Pd. Furthermore, the Pd50.2Cu38.4Pt11.4 icosahedrons demonstrate long‐term durability in current–time test for 36 000 s and high in situ anti‐CO poisoning performance. In addition, the introduction of CO can enhance electro‐oxidation endurance on Pd50.2Cu38.4Pt11.4 icosahedrons, and the peak mass activity can reach to 14.4 A mg−1Pd+Pt. The in situ Fourier transform infrared spectroscopy spectra indicate that the Pd50.2Cu38.4Pt11.4 icosahedrons possess a high capacity to break CC bonds and may efficiently convert glycerol into CO2, thus improving the utilization efficiency of energy‐containing molecule glycerol.

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Electro-Oxidation of Ethylene Glycol on a Pt-Film Electrode Studied by Combined in Situ Infrared Spectroscopy and Online Mass Spectrometry

Cited by 50 publications

References 67 publications

The breaking of the CC bond in ethylene glycol oxidation at the Pt(111) electrode and its vicinal surfaces

The breaking of the CC bond in ethylene glycol oxidation at the Pt(111) electrode and its vicinal surfaces

Utilising solution dispersed platinum nanoparticles to direct the growth of electrodeposited platinum nanostructures and its influence on the electrocatalytic oxidation of small organic molecules

Ultrasmall Pd‐Cu‐Pt Trimetallic Twin Icosahedrons Boost the Electrocatalytic Performance of Glycerol Oxidation at the Operating Temperature of Fuel Cells

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