Electrochemical oxidation of oxalic acid and hydrazinium nitrate on platinum in nitric acid media

Rockombeny, L.C.; Feraud, Jean-Pierre; Queffelec, Benoit; Ode, Denis; Tzedakis, Théodore

doi:10.1016/j.electacta.2012.01.080

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…Based on possible redox states, this redox couple could be Mn 3+ /Mn 2+ or Mn 4+ /Mn 3+ . 48,49 The generated currents due to the oxidation of oxalic acid on MnAAPyr are comparable with the currents obtained using Pt, a benchmark catalyst, at pH 1 and 1000 rpm 47 and even higher than the currents recorded at platinum single crystal electrodes. 50…”

Section: Electrochemical Performancementioning

confidence: 63%

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Bio-inspired design of electrocatalysts for oxalate oxidation: a combined experimental and computational study of Mn–N–C catalysts

Matanović

Babanova

Perry

et al. 2015

Phys. Chem. Chem. Phys.

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We report a novel non-platinum group metal (non-PGM) catalyst derived from Mn and amino- antipyrine (MnAAPyr) that shows electrochemical activity towards the oxidation of oxalic acid comparable to Pt with an onset potential for oxalate oxidation measured to be 0.714 ± 0.002 V vs. SHE at pH = 4. The material has been synthesized using a templating Sacrificial Support Method with manganese nitrate and 4-aminoantipyrine as precursors. This catalyst is a nano-structured material in which Mn is atomically dispersed on a nitrogen-doped graphene matrix. XPS studies reveal high abundance of pyridinic, Mn-Nx, and pyrrolic nitrogen pointing towards the conclusion that pyridinic nitrogen atoms coordinated to manganese constitute the active centers. Thus, the main features of the MnAAPyr catalyst are it exhibits similarity to the active sites of naturally occurring enzymes that are capable of efficient and selective oxidation of oxalic acid. Density functional theory in plane wave formalism with Perdew, Burke and Ernzerhof functional was further used to study the stability and activity of different one-metal active centers that could exist in the catalyst. The results show that the stability of the Mn-Nx sites changes in the following order: MnN4 > MnN3C > MnN2C2 > MnN3. Based on the overpotentials of 0.64 V and 0.71 V vs. SHE, calculated using the free energy diagrams for the oxalate oxidation mechanism, we could conclude that the MnN3C and MnN2C2 sites are most probable Mn-Nx sites responsible for the reported catalytic activity of the new catalyst.

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Section: Electrochemical Performancementioning

confidence: 63%

“…It is also known that the Pt activity regarding oxalate oxidation is pH dependent and decreases at higher pHs. 15,47 Thus the herein developed catalyst shows lower overpotential towards oxalate oxidation in comparison to Pt.…”

Section: Electrochemical Performancementioning

confidence: 85%

Bio-inspired design of electrocatalysts for oxalate oxidation: a combined experimental and computational study of Mn–N–C catalysts

Matanović

Babanova

Perry

et al. 2015

Phys. Chem. Chem. Phys.

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“…Platinum (Pt) is well known for its catalytic property towards the oxidation of oxalic acid [19][20][21]. To obtain higher surface area and decrease the catalyst cost, Pt nanoparticles have been immobilized on the surface of conductive support materials (graphene) [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

An Oxalic Acid Sensor Based on Platinum/Carbon Black-Nickel-Reduced Graphene Oxide Nanocomposites Modified Screen-Printed Carbon Electrode

Income

Ratnarathorn

Themsirimongkon

et al. 2019

J. Electrochem. Sci. Technol

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A novel non-enzymatic oxalic acid (OA) sensor based on the platinum/carbon black-nickel-reduced graphene oxide (Pt/CB-Ni-rGO) nanocomposite is reported. The nanocomposites were prepared by the ethylene glycol reduction method. Their morphology and chemical composition were characterized by scanning electron microscopy (SEM), energy dispersive Xray spectroscopy (EDX) and transmission electron microscopy (TEM). The results clearly demonstrated the formation of the Pt/CB-Ni-rGO nanocomposite. The electrocatalytic activity of the Pt/CB-Ni-rGO electrode was investigated by cyclic voltammetry. It was determined that the appropriate amount of Pt enhanced the catalytic activity of Pt for oxalic acid electro-oxidation. Moreover, the modified electrode was determined to be highly selective for oxalic acid without interference from compounds commonly found in urine including uric acid and ascorbic acid. The chronoamperometric signal gave a wide linearity range of 20 μM-60 mM and the detection limit (3σ) was found to be 2.35 μM. The proposed method showed high selectivity, stability, and good reproducibility and could be used with micro-volumes of sample for the detection of oxalic acid. Finally, the oxalic acid content in artificial and control urine samples were successfully determined by our proposed electrode.

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“…Pt and Pd are well-known for their excellent catalytic activity towards several electrochemical processes, including the oxidation of OA. 2,3,14,19 To obtain a higher surface area and to reduce the cost of the catalyst, various methods for preparing of the Pt-catalyst have been reported, such as the immobilization of Pt-Pd nanostructures on the surface of a conductive support material. 20 Graphene nanosheets have received considerable interest for immobilizing nanostructures on them due to their large surface and high conductivity.…”

Section: Introductionmentioning

confidence: 99%

Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid

Cai

Li²,

Zhao³

et al. 2015

ANAL. SCI.

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A novel non-enzymatic oxalic acid (OA) sensor was developed using a nanocrystal PtPd loaded reduced graphene nanosheets (PtPdNCs/RGO)-modified electrode. PtPdNCs/RGO were successfully achieved by a facile, one-step and template-free method, in which PtPd nanoparticles with 100 nm-scale were assembled from polyhedral PtPd nanocrystals of various shapes and dispersed on the graphene nanosheets. Resulting PtPdNCs/RGO were characterized and used for PtPdNCs/RGO-modified electrodes. Electrochemical oxidation of OA on the modified electrode was investigated by cyclic voltammetry and differential pulse voltammetry (DPV). Well-defined peaks of OA oxidation could be obtained using an electrode that indicated its high electrochemical activity. The concentration of OA and the current responses could be obtained in the ranges of 0.5 -10 and 10 -35 mM with correlation coefficients of 0.9994 and 0.9952; the detection limit (S/N = 3) was found to be 0.05 mM. The modified electrode presented good characteristics in terms of both stability and reproducibility, promising its applicability in practical analysis.

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Electrochemical oxidation of oxalic acid and hydrazinium nitrate on platinum in nitric acid media

Cited by 13 publications

References 21 publications

Bio-inspired design of electrocatalysts for oxalate oxidation: a combined experimental and computational study of Mn–N–C catalysts

Bio-inspired design of electrocatalysts for oxalate oxidation: a combined experimental and computational study of Mn–N–C catalysts

An Oxalic Acid Sensor Based on Platinum/Carbon Black-Nickel-Reduced Graphene Oxide Nanocomposites Modified Screen-Printed Carbon Electrode

Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid

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