Carbon-Supported Platinum Nanoparticle Solid-State Ion Selective Electrodes for the Determination of Potassium

Paczosa‐Bator, Beata; Cabaj, Leszek; Pięk, Magdalena; Piech, Robert; Kubiak, Władysław W.

doi:10.1080/00032719.2015.1045594

Cited by 16 publications

(8 citation statements)

References 22 publications

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“…Nanostructured-based SCs show some important advantages over CPs, including their hydrophobicity, large surface area, light insensitivity and high contact capacitance and the absence of side-reactions [4,24,25]. Both carbon and noble metals nanostructures have been used in SC-ISEs: they include carbon nanotubes [26,27,28,29], fullerene [30,31], graphene [29,32,33,34,35], polymer/carbon composites [36,37], porous carbon [38,39,40], gold nanoclusters [41], gold nanodendrites [24], nanoporous gold films [42], gold [43,44] and platinum [45] nanoparticles, platinum nanoflowers [46], combined platinum and gold nanostructures [47].…”

Section: Introductionmentioning

confidence: 99%

Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing

Criscuolo

Taurino

Dam

et al. 2019

Sensors

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Nanostructured materials have attracted considerable interest over the last few decades to enhance sensing capabilities thanks to their unique properties and large surface area. In particular, noble metal nanostructures offer several advantages including high stability, non-toxicity and excellent electrochemical behaviour. However, in recent years the great expansion of point-of-care (POC) and wearable systems and the attempt to perform measurements in tiny spaces have also risen the need of increasing sensors miniaturization. Fast constant potential electrodeposition techniques have been proven to be an efficient way to obtain conformal platinum and gold nanostructured layers on macro-electrodes. However, this technique is not effective on micro-electrodes. In this paper, we investigate an alternative one-step deposition technique of platinum nanoflowers on micro-electrodes by linear sweep voltammetry (LSV). The effective deposition of platinum nanoflowers with similar properties to the ones deposited on macro-electrodes is confirmed by morphological analysis and by the similar roughness factor (~200) and capacitance (~18 μ F/mm 2 ). The electrochemical behaviour of the nanostructured layer is then tested in an solid-contact (SC) L i + -selective micro-electrode and compared to the case of macro-electrodes. The sensor offers Nernstian calibration with same response time (~15 s) and a one-order of magnitude smaller limit of detection (LOD) ( 2.6 × 10 − 6 ) with respect to the macro-ion-selective sensors (ISE). Finally, sensor reversibility and stability in both wet and dry conditions is proven.

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Section: Introductionmentioning

confidence: 99%

Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing

Criscuolo

Taurino

Dam

et al. 2019

Sensors

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“…For the platinum nanoparticles–carbon materials–contacted potassium selective electrodes capacitance values were as follows—248 μF and 154 μF for PtNPs-CB [ 25 ] and PtNPs-GR [ 26 ], respectively, which was considerably lower in comparison to electrodes with ruthenium dioxide–carbon material layers.…”

Section: Resultsmentioning

confidence: 99%

High Capacity Nanocomposite Layers Based on Nanoparticles of Carbon Materials and Ruthenium Dioxide for Potassium Sensitive Electrode

2021

Self Cite

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This work presents the new concept of designing ion-selective electrodes based on the use of new composite materials consisting of carbon nanomaterials and ruthenium dioxide. Using two different materials varying in microstructure and properties, we could obtain one material for the mediation layer that adopted features coming of both components. Ruthenium dioxide characterized by high electrical capacity and mixed electronic-ionic transduction and nano-metric carbon materials were reportedly proved to improve the properties of ion-selective electrodes. Initially, only the materials and then the final electrodes were tested in the scope of the presented work, using scanning and transmission electron microscope, contact angle microscope, and various electrochemical techniques, including electrochemical impedance spectroscopy and chronopotentiometry. The obtained results confirmed beneficial influence of the designed nanocomposites on the ion-selective electrodes’ properties. Nanosized structure, high capacity (characterized by the electrical capacitance value from approximately 5.5 mF for GR + RuO2 and CB + RuO2, up to 14 mF for NT + RuO2) and low hydrophilicity (represented by the contact angle from 60° for GR+RuO2, 80° for CB+RuO2, and up to 100° for NT + RuO2) of the mediation layer materials, allowed us to obtain water layer-free potassium-selective electrodes, characterized by rapid and stable potentiometric response in a wide range of concentrations-from 10−1 to 10−6 M K+.

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“…The carbon black supported platinum nanoparticle (CB‐PtNP) solution was prepared by mixing 1 mL of the above described carbon black/THF mixture with 1 mL of a Pt nanopowder water dispersion (1000 ppm solution of 3 nm Pt nanoparticles), purchased from US Research Nanomaterials Inc. (Houston, TX), and sonicating for 30 min. This approach was motivated by the reports of Paczosa‐Bator to achieve a 15 wt% loading of PtNPs in the CB, although differed in that the PtNPs in the CB‐PtNP mixture used by these authors was a prepared colloid. The ionic liquid pellet with single‐wall carbon nanotubes (ETH‐CNT) layer was prepared by mixing tetradodecylammonium tetrakis(4‐chlorphenyl) borate (ETH500) with single walled carbon nanotubes (SWCNT), both purchased from Sigma Aldrich, at a 15 : 1 wt/wt ratio as reported by Liang et al.…”

Section: Methodsmentioning

confidence: 99%

Development of Miniature Solid Contact Ion Selective Electrodes for in situ Instrumentation

Jaramillo

Noell

2020

Electroanalysis

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Using a standardized miniature format ion selective electrode, five different carbon based solid contact materials, including a novel commercially available graphene oxide assisted carbon nanotube dispersion (FlexipheneTM), were compared. The electromotive force (EMF) response, stability, and behavior following storage was evaluated. Bulk resistance for the novel graphene oxide/carbon nanotube (GO‐CNT) based ISE was observed to be 0.09±0.03 MΩ, which is two orders of magnitude lower than reported for either component in isolation. The results for previously described solid contact materials are in general agreement with the literature, and the tradeoffs between solid contact layer material choices are discussed. Performance of GO‐CNT solid contact ion selective electrodes were then evaluated in a 3D‐printed fluidic array to determine their suitability for future in situ instruments.

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Carbon-Supported Platinum Nanoparticle Solid-State Ion Selective Electrodes for the Determination of Potassium

Cited by 16 publications

References 22 publications

Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing

Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing

High Capacity Nanocomposite Layers Based on Nanoparticles of Carbon Materials and Ruthenium Dioxide for Potassium Sensitive Electrode

Development of Miniature Solid Contact Ion Selective Electrodes for in situ Instrumentation

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