Electrooxidation of Vanillyl Alcohol in Acidic Aqueous Solution Using Rotating Ring-Disk Electrode Voltammetry

Yamada, Akifumi

doi:10.2116/analsci.21.429

Cited by 5 publications

(8 citation statements)

References 22 publications

(18 reference statements)

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“…The Van redox potential is relatively low in comparison to efficient mediators such as veratryl alcohol [5]. However, the long life of the Van radical cation allows efficient electron transport between lignin and the oxidising enzyme [5]. The irreversible electrooxidation of Van was also reported by Bourbonnais et al [4].…”

Section: Introductionmentioning

confidence: 86%

“…This compound can be oxidised in a 2-electron process to vanillin and they are both widely used as natural flavoring reagents [3]. Moreover, Van is one of the most studied among the lignin model compounds [4][5][6]. This water soluble molecule can be used to represent functional groups or linkages of lignin [7].…”

Section: Introductionmentioning

confidence: 99%

“…In the earliest report, Van was adsorbed from alcohol on the surface of solid electrodes in order to study its oxidation and following chemical reactions [9]. The complex mechanism of lignin model compound oxidation was later confirmed by a study performed in an acidic solution [5]. The reaction follows the ECE (electron-chemical-electron) mechanism with a slow second electron transfer step following deprotonation.…”

Section: Introductionmentioning

confidence: 99%

“…The reaction follows the ECE (electron-chemical-electron) mechanism with a slow second electron transfer step following deprotonation. The Van redox potential is relatively low in comparison to efficient mediators such as veratryl alcohol [5]. However, the long life of the Van radical cation allows efficient electron transport between lignin and the oxidising enzyme [5].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Electrochemical and IR spectroscopic detection of oxidation products of the monomer and dimer of vanillyl alcohol in a sol–gel processed silicate matrix

Roźniecka

Zawisza

Jawiczuk³

et al. 2010

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemical and IR spectroscopic detection of oxidation products of the monomer and dimer of vanillyl alcohol in a sol–gel processed silicate matrix

Roźniecka

Zawisza

Jawiczuk³

et al. 2010

Journal of Electroanalytical Chemistry

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“…Alternative sources of vanillin flavor [1] can be based on cultured vanilla plant cells or plant callus tissue, prokaryotic or eukaryotic microorganisms [27][28][29][30][31][32][33], or isolated enzymes used as biocatalysts [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Electroanalysis may be used in the Vanillin Biotechnological Production

Giraud

Mirabel²,

Comtat

2013

Appl Biochem Biotechnol

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This study shows that electroanalysis may be used in vanillin biotechnological production. As a matter of fact, vanillin and some molecules implicated in the process like eugenol, ferulic acid, and vanillic acid may be oxidized on electrodes made of different materials (gold, platinum, glassy carbon). By a judicious choice of the electrochemical method and the experimental conditions the current intensity is directly proportional to the molecule concentrations in a range suitable for the biotechnological process. So, it is possible to imagine some analytical strategies to control some steps in the vanillin biotechnological production: by sampling in the batch reactor during the process, it is possible to determine out of line the concentration of vanillin, eugenol, ferulic acid, and vanillic acid with a gold rotating disk electrode, and low concentration of vanillin with addition of hydrazine at an amalgamated electrode. Two other possibilities consist in the introduction of electrodes directly in the batch during the process; the first one with a gold rotating disk electrode using linear sweep voltammetry and the second one requires three gold rotating disk electrodes held at different potentials for chronoamperometry. The last proposal is the use of ultramicroelectrodes in the case when stirring is not possible.

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Role of an Inert Electrode Support in Plasmonic Electrocatalysis

Ganguli

Sekretareva

2022

ACS Catal.

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Direct loading of plasmonic nanostructures onto catalytically inert conductive support materials leads to the Schottky barrier-free architecture of the photocatalytic system. Such systems have recently attracted the attention of the research community as they permit collection of hot carriers independent of their energy when additional charge separation strategies are used. However, a systematic mechanistic investigation and description of the contribution of an inert conductive support to plasmonic electrocatalysis is missing. Herein, we systematically investigated the effect of the supporting electrode material on the observed photoinduced enhancement by comparing the photoelectrocatalytic properties of AuNPs supported on highly oriented pyrolytic graphite (HOPG) and indium tin oxide (ITO) electrodes using electrocatalytic benzyl alcohol (BnOH) oxidation as a model system. Upon illumination, only ∼(3 ± 1)% enhancement in catalytic current was recorded on the AuNP/ITO electrodes in contrast to ∼(42 ± 6)% enhancement on AuNP/HOPG electrodes. Our results showed that the local heating due to light absorption by the electrode material itself independent of localized surface plasmon effects is the primary source of the observed significant photoinduced enhancement on the HOPG electrodes in comparison to the ITO electrodes. Moreover, we demonstrated that an increased interfacial charge transfer at elevated temperatures and not faster reactant diffusion as suggested previously is the main source of the thermal enhancement. This work highlights the importance of the systematic evaluation of contributions of all parts, even if they are catalytically inert, to the light-induced facilitation of catalytic reactions in plasmonic systems.

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Electrooxidation of Vanillyl Alcohol in Acidic Aqueous Solution Using Rotating Ring-Disk Electrode Voltammetry

Cited by 5 publications

References 22 publications

Electrochemical and IR spectroscopic detection of oxidation products of the monomer and dimer of vanillyl alcohol in a sol–gel processed silicate matrix

Electrochemical and IR spectroscopic detection of oxidation products of the monomer and dimer of vanillyl alcohol in a sol–gel processed silicate matrix

Electroanalysis may be used in the Vanillin Biotechnological Production

Role of an Inert Electrode Support in Plasmonic Electrocatalysis

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