Maximum electrocatalytic oxidation performance for formaldehyde in a combinatorial copper-palladium thin film library

Pötzelberger, Isabella; Mardare, Cezarina Cela; Burgstaller, Wolfgang; Hassel, Achim Walter

doi:10.1016/j.apcata.2016.07.004

Cited by 16 publications

(18 citation statements)

References 42 publications

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“…For a similar Pd content (7.5 at.%), enhanced properties for electrocatalytic oxidation of formaldehyde were also Fig. 5 Schematic illustration of the reaction mechanism for the electrocatalytic glucose oxidation adapted from [29] found on Cu-Pd sputtered combinatorial libraries and this feature was attributed to a combination between Pd concentration triggering different electron density on the surface, crystallite size, grain orientation, and surface microstructuring [9], facts which support as well the present findings. Due to the easy fabrication as well as the good performance concerning the electrocatalytic oxidation of glucose, Cu-Pd thin film alloys make this material a good candidate for being used as non-enzymatic glucose sensor and it can be further used for the glucose concentration detection.…”

Section: +supporting

confidence: 76%

“…For higher Pd concentrations, the R q values are steadily increasing, even though the standard deviation values are high as well. This fact can be related to the coalescence of small crystallite and the subsequent formation of a few larger grains for concentrations higher than approximately 10 at.% Pd [9], as also observed in the images from Fig. 2.…”

Section: Resultsmentioning

confidence: 52%

“…The samples have been characterized in several points by X-ray diffraction for crystallographic information, and only the presence of a Cu phase with face-center cubic structure was found. Detailed analysis of the diffractograms, with the lattice parameters and crystallite size calculations, as well as scanning electron microscopy of the surface as a function of Pd content for a similar library, was reported somewhere else [9].…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, disadvantages such as high material costs and poisoning effects on the catalysts surface triggered the search of alternative materials. Alloying Pd with a nonnoble metal lowers the material cost tremendously [9]. Cu and its alloys showed good corrosion resistance and electrocatalytic behavior towards glucose oxidation [9,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a change in the material properties within the material library is obtained. Recent reports revealed that screening along a Cu-Pd compositional spread led to the determination of an optimum composition with augmented electrocatalytic activity towards glucose oxidation [9]. In the last years, the development of electrode materials for fast detection of biological substances such as amino acids, enzymes, as well as the concentration of the blood glucose level has received an increased interest [10].…”

Section: Introductionmentioning

confidence: 99%

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Optimum Copper-Palladium Catalyst from a Combinatorial Library for Sensitive Non-Enzymatic Glucose Sensors

et al. 2017

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The optimum activity for glucose electrocatalytic oxidation was found by screening along a large spread cosputtered combinatorial copper-palladium library (2.6 at.% to 39.2 at.% Pd) in neutral media using flow-type scanning droplet cell microscopy (FT-SDCM). The elemental composition and the surface topography were characterized along the compositional spread using energy dispersive X-ray spectroscopy (EDX), as well as atomic force microscopy (AFM). The study proves that the entire range of alloys can be implemented in glucose detection. The highest catalytic effect was obtained at a Pd content of 8.2 at.% (E SHE = 0.58 V) with a current density value of 7.33 mA cm , normalized to the stepwise increase of 1 mM glucose. Also, a good longterm stability, reproducibility (relative standard deviatioñ 5%), as well as the selective sensitivity to glucose oxidation were demonstrated by performing measurements in the presence of other compounds found in blood (e.g., ascorbic acid and uric acid).

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Section: +supporting

confidence: 76%

Section: Resultsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimum Copper-Palladium Catalyst from a Combinatorial Library for Sensitive Non-Enzymatic Glucose Sensors

et al. 2017

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Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Hassaninejad–Darzi

2018

Fuel Cells

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Nickel hydroxide doped NaA nanozeolite carbon paste electrode (Ni(OH)2‐NaA/CPE) was employed as simple and efficient sensor for electro‐catalytic oxidation and detection of formaldehyde (HCHO). For this goal, organic template free synthesis of NaA nanozeolite under room‐temperature was performed and characterized. Field emission scanning electronic microscopy (FESEM) technique exhibited the presence of spherical NaA nanozeolite morphology with particle size under 100 nm. The BET surface area and average pore diameter of synthesized NaA nanozeolite were obtained to be 3.622 × 102 m2 g−1 and 5.9 nm, respectively. Carbon paste electrode (CPE) was modified by NaA nanozeolite and then Ni2+ ions incorporated to this electrode to obtain Ni‐NaA/CPE. The values of electron transfer coefficient and mean value of catalytic rate constant for HCHO and redox sites of Ni(OH)2‐NaA/CPE were caculated to be 0.58 and 8.42 × 106 cm3 mol−1 s−1, respectively. The results indicate that Ni(OH)2‐NaA/CPE displays good electrocatalytic activity with respects to HCHO oxidation owing to its mesoporous structure and the large surface area of NaA nanozeolite. Moreover, amperometric studies exhibited that the fabricated electrode has a detection limits of 2.0 μM allowing the quantitative analysis of HCHO in the concentration range from 6.0 × 10−3 to 2.31 × 10−1mM with high sensitivity (1.6716 × 103 μA mM−1).

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Formaldehyde Electro‐catalytic Oxidation onto Carbon Paste Electrode Modified by MIL‐101(Cr) Nanoparticles

2020

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In this paper, MIL‐101(Cr) metal‐organic framework (MOF) has been rapidly synthesized via microwave heating and fully characterized using powder X‐ray diffraction (PXRD), field emission scanning electronic microscopy (FESEM), Fourier transform infrared (FT‐IR) and nitrogen adsorption/desorption isotherm. FESEM image of MIL‐101(Cr) MOF displays spherical particles with a uniform morphology and particle size under 100 nm. The BET surface area and average pore diameter of synthesized MIL‐101(Cr) MOF were obtained to be 7.266 × 102 m2 g−1 and 3.28 nm, respectively. Nickel hydroxide dispersed onto MIL‐101(Cr) nanoparticles modified carbon paste electrode (Ni(OH)2‐MIL/CPE) was employed for electro‐catalytic oxidation of formaldehyde (CH2O) in the alkaline medium. The mean value of electron‐transfer coefficient, charge‐transfer rate constant and surface coverage of the Ni(OH)2‐MIL/CPE are found to be 0.517, 0.0058 s−1 and 7.88 × 10−8 mol cm−2, respectively. Also, the mean value of catalytic rate constant and diffusion coefficient of CH2O in the modified electrode surface are calculated to be 2.37 × 102 cm3 mol−1 s−1 and 1.288 × 10−6 cm2 s−1, respectively. The results indicate that Ni(OH)2‐MIL/CPE displays good electrocatalytic activity to the CH2O oxidation owing to porous structure and the large surface area of MIL‐101(Cr) MOF.

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Maximum electrocatalytic oxidation performance for formaldehyde in a combinatorial copper-palladium thin film library

Cited by 16 publications

References 42 publications

Optimum Copper-Palladium Catalyst from a Combinatorial Library for Sensitive Non-Enzymatic Glucose Sensors

Optimum Copper-Palladium Catalyst from a Combinatorial Library for Sensitive Non-Enzymatic Glucose Sensors

Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Formaldehyde Electro‐catalytic Oxidation onto Carbon Paste Electrode Modified by MIL‐101(Cr) Nanoparticles

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