Improved electrocatalytic activity of Pt on carbon nanofibers for glucose oxidation mediated by support oxygen groups in Pt perimeter

Ham, Matthijs  P.J.M. van der; Hersbach, T.J.P.; Delgado, Juan J.; Matson, Benjamin D.; Lim, Jongwoo; Führer, Marlene; Haasterecht, T. van; Verhoeven, M. W. G. M.; Hensen, Emiel J. M.; Sokaras, Dimosthenis; Koper, Marc T. M.; Bitter, Johannes H.

doi:10.1016/j.apcatb.2023.123046

Cited by 5 publications

(2 citation statements)

References 84 publications

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“…Furthermore, at high scan rates an increment of the irreversibility in the diffusion processes was observed ( Elgrishi et al, 2018 ), being more marked for glucose and sucrose (peak A1 and A3 in Figure 8A,D respectively), corresponding to a first oxidation process and could be related with an aldehyde-organic group, included in both molecules. As a manner of comparison, Table 3 gives an overview of the reaction conditions and the obtained performance for Pt-based materials in the electro-catalytic oxidation of glucose in acid medium reported in literature ( Skou, 1977 ; Luna et al, 1988 ; Luna et al, 1991 ; Kokoh et al, 1992 ; Popović et al, 1992 ; Watson and Attard, 2001 ; Kanninen and Kallio, 2018 ; Van der Ham et al, 2023 ).…”

Section: Resultsmentioning

confidence: 99%

Insights in Pt-based electrocatalysts on carbon supports for electro-oxidation of carbohydrates: an EIS-DEMS analysis

Castañeda-Morales,

Gómez-Gómez,

et al. 2024

Front. Chem.

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In this work, the electrochemical oxidation of carbohydrates (glucose, fructose, and sucrose) was induced at the interface of Pt-nanoparticles supported on different carbon-based materials as carbon vulcan (C) and carbon black (CB). It was found that the support plays an important role during carbohydrates electro-oxidation as demonstrated by electrochemical techniques. In this context, current-concentration profiles of the redox peaks show the behavior of the pathways at carbohydrates-based solutions. Herein, the trend of current measured was glucose > sucrose > fructose, attributed to differences in the organic functional groups and chain-structure. Raman, XRD, SEM-EDS and XPS put in clear important structural, morphological, and electronic differences linked with the intrinsic nature of the obtained material. Differential Electrochemical Mass Spectroscopy (DEMS) indicated that the selectivity and the conversion of the formed reaction products during oxidation is linked with the catalyst nature (distribution, particle size) and the interaction with the carbon-based support.

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Section: Resultsmentioning

confidence: 99%

Insights in Pt-based electrocatalysts on carbon supports for electro-oxidation of carbohydrates: an EIS-DEMS analysis

Castañeda-Morales,

Gómez-Gómez,

et al. 2024

Front. Chem.

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“…There are several reactions that have already been considered, such as the electrocatalytic oxidation of chloride ions, aliphatic and aromatic alcohols, , urea, amines, hydrazine, and other, biomass-derived compounds − (most importantly, 5-(hydroxymethyl)furfural and glucose). A promising candidate is glycerol, a common byproduct of the soap/biodiesel industry (80% purity glycerol costs about 0.24 USD kg –1 ) .…”

Section: Introductionmentioning

confidence: 99%

Stable Operation of Paired CO₂ Reduction/Glycerol Oxidation at High Current Density

Kormányos,

Szirmai,

Endrődi

et al. 2024

ACS Catal.

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Despite the considerable efforts made by the community, the high operation cell voltage of CO 2 electrolyzers is still to be decreased to move toward commercialization. This is mostly due to the high energy need of the oxygen evolution reaction (OER), which is the most often used anodic pair for CO 2 reduction. In this study, OER was replaced by the electrocatalytic oxidation of glycerol using carbon-supported Pt nanoparticles as an anode catalyst. In parallel, the reduction of CO 2 to CO was performed at the Ag cathode catalyst using a membraneless microfluidic flow electrolyzer cell. Several parameters were optimized, starting from the catalyst layer composition (ionomer quality and quantity), through operating conditions (glycerol concentration, applied electrolyte flow rate, etc.), to the applied electrochemical protocol. By identifying the optimal conditions, a 75−85% Faradaic efficiency (FE) toward glycerol oxidation products (oxalate, glycerate, tartronate, lactate, glycolate, and formate) was achieved at 200 mA cm −2 total current density while the cathodic CO formation proceeded with close to 100% FE. With static protocols (potentio-or galvanostatic), a rapid loss of glycerol oxidation activity was observed during the long-term measurements. The anode catalyst was reactivated by applying a dynamic potential step protocol. This allowed the periodic reduction, hence, refreshing of Pt, ensuring stable, continuous operation for 5 h.

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Electronegativity Induced d‐Band Center Offset for Pt‐Rh Dual Sites in High‐Entropy Alloy Boosts Liquid Fuels Electrooxidation

Lv,

Lin,

Xue

et al. 2024

Advanced Energy Materials

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Investigating the catalytic behavior of the liquid fuels on well‐defined dual sites is crucial in understanding electrocatalytic reactions. Herein, concept holding bidirectional electronegativity dominant d‐band center regulation on Pt‐Rh dual sites is proposed to tailor the catalytic behaviors toward methanol oxidation reaction (MOR). The Pt‐Rh dual sites are engineered by introducing the low‐electronegativity Ga/Ni and high‐electronegativity W elements in PtRhGaNiW high‐entropy alloy (HEA), which can drive the electron cloud of Pt‐Rh dual sites redispersing over a wide orbit window. The optimized Pt‐Rh dual sites in PtRhGaNiW HEA nanowire achieve a high current density of 5.61 mA cm−2 toward MOR, which is 3.38 and 9.75 times than that of PtRh alloy (1.66 mA cm−2) and Pt/C (0.57 mA cm−2), as well as remarkably stability and COads poisonous resistance. The theoretical calculations further disclose that the redistribution of surface localized electron around Pt‐Rh dual sites can promote direct oxidation of ─OH, and accelerate the COads oxidation/removal. This work presents a breakthrough in designing advanced dual site electrocatalysts for complex catalytic reactions.

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Improved electrocatalytic activity of Pt on carbon nanofibers for glucose oxidation mediated by support oxygen groups in Pt perimeter

Cited by 5 publications

References 84 publications

Insights in Pt-based electrocatalysts on carbon supports for electro-oxidation of carbohydrates: an EIS-DEMS analysis

Insights in Pt-based electrocatalysts on carbon supports for electro-oxidation of carbohydrates: an EIS-DEMS analysis

Stable Operation of Paired CO₂ Reduction/Glycerol Oxidation at High Current Density

Electronegativity Induced d‐Band Center Offset for Pt‐Rh Dual Sites in High‐Entropy Alloy Boosts Liquid Fuels Electrooxidation

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Improved electrocatalytic activity of Pt on carbon nanofibers for glucose oxidation mediated by support oxygen groups in Pt perimeter

Cited by 5 publications

References 84 publications

Insights in Pt-based electrocatalysts on carbon supports for electro-oxidation of carbohydrates: an EIS-DEMS analysis

Insights in Pt-based electrocatalysts on carbon supports for electro-oxidation of carbohydrates: an EIS-DEMS analysis

Stable Operation of Paired CO2 Reduction/Glycerol Oxidation at High Current Density

Electronegativity Induced d‐Band Center Offset for Pt‐Rh Dual Sites in High‐Entropy Alloy Boosts Liquid Fuels Electrooxidation

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Product

Resources

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Stable Operation of Paired CO₂ Reduction/Glycerol Oxidation at High Current Density