Remarkably Efficient Carbon-Supported Nanostructured Platinum-Bismuth Catalysts for the Selective Electrooxidation of Glucose and Methyl-Glucoside

Neha, Neha; Kouamé, B. S. R.; Rafaïdeen, Thibault; Baranton, Stève; Coutanceau, Christophe

doi:10.1007/s12678-020-00586-y

Cited by 26 publications

(41 citation statements)

References 61 publications

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“…Indeed, we showed in a previous work [24] using in-situ infrared spectroscopy measurements that the formation of CO 2 occurred from circa 0.6 V vs. RHE on a Pd 3 Au 7 /C catalyst for the oxidation of 0.10 mol L −1 glucose or xylose in 0.10 mol L −1 NaOH electrolyte. The counter reaction in the electrolysis cell is the very fast hydrogen evolution reaction at a Pt/C electrode (occurring with a low over-potential) and the H 2 O/H 2 redox couple has a reversible potential of 0.000 V vs. RHE; the cell voltage being the different between the anode potential and the cathode potential, the anode potential values are close to the applied cell voltage values [24,30], i.e., +0.6 V vs. RHE and +0.8 V vs. RHE. If CO 2 is formed, then carbonate is also formed in alkaline medium.…”

Section: Effect Of Cell Voltage and Glucose Concentrationmentioning

confidence: 70%

“…Therefore, these results could certainly be extended to the degradation of xylose in alkaline medium according to the following equation: Table 4 summarizes the amount of hydrogen concomitantly produced, the electrical energy consumed and the cost related to electric energy consumption for the production of 1 ton of gluconate/xylonate using the best configurations of Tables 2 and 3 (the higher production of gluconate and xylonate at each cell voltage and each concentration). The details of calculation are given in Supplementary Materials (S4) [24,30]. Table 4.…”

Section: Discussionmentioning

confidence: 99%

“…Chronoamperometry measurements are conducted at 293 K in a 25 cm 2 single electrolysis cell fitted with a Pd 3 Au 7 /C anode (0.5 mg metal cm −2 ) and a Pt/C cathode (0.5 mg Pt cm −2 ). The working principle of the cell is described elsewhere [24,30] and presented in Supplementary Materials (S3). The reaction products are analyzed by high performance liquid chromatography (HPLC) every hour of chronoamperometry measurements.…”

Section: Methodsmentioning

confidence: 99%

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Electroreforming of Glucose and Xylose in Alkaline Medium at Carbon Supported Alloyed Pd3Au7 Nanocatalysts: Effect of Aldose Concentration and Electrolysis Cell Voltage

et al. 2020

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The effects of cell voltage and of concentration of sugars (glucose and xylose) on the performances of their electro-reforming have been evaluated at a Pd3Au7/C anode in 0.10 mol L−1 NaOH solution. The catalyst synthesized by a wet chemistry route is first comprehensively characterized by physicochemical and electrochemical techniques. The supported catalyst consists in alloyed Pd3Au7 nanoparticles of circa 6 nm mean diameter deposited on a Vulcan XC72 carbon support, with a metal loading close to 40 wt%. Six-hour chronoamperometry measurements are performed at 293 K in a 25 cm2 electrolysis cell for the electro-conversion of 0.10 mol L−1 and 0.50 mol L−1 glucose and xylose at cell voltages of +0.4 V, +0.6 V and +0.8 V. Reaction products are analyzed every hour by high performance liquid chromatography. The main products are gluconate and xylonate for glucose and xylose electro-reforming, respectively, but the faradaic yield, the selectivity and the formation rate of gluconate/xylonate decrease with the increase of aldose concentration, whereas lower faradaic yields and higher formation rates of gluconate/xylonate are observed at +0.8 V than at +0.4 V (higher chemical yields).

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Section: Effect Of Cell Voltage and Glucose Concentrationmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Electroreforming of Glucose and Xylose in Alkaline Medium at Carbon Supported Alloyed Pd3Au7 Nanocatalysts: Effect of Aldose Concentration and Electrolysis Cell Voltage

et al. 2020

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“…The electrochemical oxidation of raffinose was reported using TEMPO as a mediator, to selectively oxidize the primary alcohol moieties, while leaving untouched all secondary alcohol groups present on the molecule. The electrochemically oxidized raffinose was then esterified to trimethyl d-raffinose trisuronate (9) and isolated in 63% yield (Scheme 5) [15]. which OH-groups were oxidized to carboxylic groups and a xylan-based water insoluble material containing gold nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…Although electrosynthesis satisfies most of the postulates of green chemistry, direct applications of such processes in industries remain rather scarce. However, recent advancements in the development of electrode materials and membrane technologies have improved the performances of electrochemical processes by reducing the energy consumption, improving the rates of reactions and selectivity and increasing the current density [ 8 , 9 ]. These novel technologies and the ability to use renewable electricity from wind or solar energy have made electrochemistry an intensively researched approach in recent years which has a potential to become less expensive and therefore a more economically and ecologically attractive alternative to chemical processes.…”

Section: Introductionmentioning

confidence: 99%

Electrosynthesis of Biobased Chemicals Using Carbohydrates as a Feedstock

et al. 2020

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The current climate awareness coupled with increased focus on renewable energy and biobased chemicals have led to an increased demand for such biomass derived products. Electrosynthesis is a relatively new approach that allows a shift from conventional fossil-based chemistry towards a new model of a real sustainable chemistry that allows to use the excess renewable electricity to convert biobased feedstock into base and commodity chemicals. The electrosynthesis approach is expected to increase the production efficiency and minimize negative health for the workers and environmental impact all along the value chain. In this review, we discuss the various electrosynthesis approaches that have been applied on carbohydrate biomass specifically to produce valuable chemicals. The studies on the electro-oxidation of saccharides have mostly targeted the oxidation of the primary alcohol groups to form the corresponding uronic acids, with Au or TEMPO as the active electrocatalysts. The investigations on electroreduction of saccharides focused on the reduction of the aldehyde groups to the corresponding alcohols, using a variety of metal electrodes. Both oxidation and reduction pathways are elaborated here with most recent examples. Further recommendations have been made about the research needs, choice of electrocatalyst and electrolyte as well as upscaling the technology.

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Bismuth‐Noble Metal Alloy Nanostructures Prepared by Colloidal Chemical Routes for Use in Hydrogen Evolution and Oxygen Reduction Electrocatalysis: Bi‐Pt Versus Bi‐Pd

Mourdikoudis

Regner

Gusmão

et al. 2022

Advanced Sustainable Systems

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oxidation reaction. In addition, an alteration of the active adsorption sites due to dilution of the catalytically active material may also take place when bimetallic catalysts are employed. Bismuth has already received interest as a Pt-modifier for electrocatalytic use. In this way, the noble metal quantity (and thus the overall cost) can be reduced, while the catalytic activity can be maintained (or even improved) by replacing a certain Pt amount with a less expensive metal. Bi may also modify the electronic structure of the Pt by lowering its d-band center. [1] Pt-Bi has been reported to be CO tolerant and it has exhibited higher catalytic performance for several oxidation reactions such as methanol, glycerol, ethylene glycol, and ethanol. The lower poisoning of Pt-Bi catalysts with CO has been proposed to be a determinant factor for the increase in catalytic activity of such materials. [2] Another example of an electrochemical reaction in which a bimetallic system can perform better than its monometallic counterpart is the electro-oxidation of formic acid. Pt-Bi showed a more negative onset potential and higher current density than monometallic Pt, together with the above-mentioned high tolerance to CO. [3] For the Pt-Bi alloy system, the PtBi 2 composition possesses a layered hexagonal crystal structure and has been suggested to behave as a 3D topological semimetal with very high magnetoresistance and unique electronic structures. A good comprehension of the electronic structure of PtBi 2 is required to properly assign the actual origin of its anomalous transport properties. [4] Pt-Bi bimetallic structures have found applications in thermoelectronics and batteries. Pt-Bi 2 O 3 has been shown to facilitate the photolysis of water, while single Pt or Bi 2 O 3 were unable to catalyze such reactions on their own. Pt-Bi/AC (activated carbon) is a commercially available catalyst for electrocatalysis and selective oxidation reactions. It has been suggested that Bi causes a geometric blocking effect on Pt, thus decreasing the active site ensemble of Pt. These decreased sites will still permit certain desired chemical reactions to occur, but they will not be active for specific undesired side reactions. The electronic properties of Bi help to increase the electrocatalytic activity of Pt, inhibiting poison effects, thanks to its small electron effective mass, low carrier concentrations, and highly anisotropic Fermi surface. [5,6] Pt-Bi alloy may not be the most suitable electrocatalyst for the oxygen reduction reaction (ORR); [7] still, though Pt-Bi catalysts Compositional and morphological tuning of bismuth-based nanomaterials is crucial to improve and broaden the application of such structures in a range of electrocatalytic reactions. Nanostructures composed of Pt-Bi and Pd-Bi alloys in different elemental proportions and shapes are produced by solvothermal and hydrothermal chemical routes at moderate temperatures. The alloying of cost-effective bismuth with platinum is found to be much more efficient than that with...

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Remarkably Efficient Carbon-Supported Nanostructured Platinum-Bismuth Catalysts for the Selective Electrooxidation of Glucose and Methyl-Glucoside

Cited by 26 publications

References 61 publications

Electroreforming of Glucose and Xylose in Alkaline Medium at Carbon Supported Alloyed Pd3Au7 Nanocatalysts: Effect of Aldose Concentration and Electrolysis Cell Voltage

Electroreforming of Glucose and Xylose in Alkaline Medium at Carbon Supported Alloyed Pd3Au7 Nanocatalysts: Effect of Aldose Concentration and Electrolysis Cell Voltage

Electrosynthesis of Biobased Chemicals Using Carbohydrates as a Feedstock

Bismuth‐Noble Metal Alloy Nanostructures Prepared by Colloidal Chemical Routes for Use in Hydrogen Evolution and Oxygen Reduction Electrocatalysis: Bi‐Pt Versus Bi‐Pd

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