Hydrodynamic chronoamperometric determination of hydrogen peroxide using carbon paste electrodes coated by multiwalled carbon nanotubes decorated with MnO2 or Pt particles

Anojčić, Jasmina; Guzsvány, Valéria; Vajdle, Olga; Madarász, Dániel; Rónavári, Andrea; Kónya, Zoltán; Kalcher, Kurt

doi:10.1016/j.snb.2016.04.005

Cited by 34 publications

(12 citation statements)

References 44 publications

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“…The Cbz stock solution (c Cbz = 1.12 × 10 −3 mol L This work in combination with NAFION® (Fluka, NAFION® NR 50, H + form, 7-9 mesh) via the drop coating of appropriately prepared ethanolic (ethanol absolute anhydrous, Carlo Erba) suspension of MWCNTs and NAFION® in accordance with our earlier published protocols [47,48]. Namely, the suspension was prepared by dispersing 1.0 mg of MWCNTs in 0.9 mL of ethanol and 0.1 mL of ethanolic solution of NAFION® (5% of NAFION® was prepared from appropriate amount of solid NAFION®, ethanol, and doubly distilled water).…”

Section: Chemicals and Solutionsmentioning

confidence: 99%

β-Cyclodextrin and multiwalled carbon nanotubes modified boron-doped diamond electrode for voltammetric assay of carbendazim and its corrosion inhibition behavior on stainless steel

Brycht

Vajdle

Sipa

et al. 2017

Ionics

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In this work, the use of square-wave adsorptive stripping voltammetry (SWAdSV) in combination with boron-doped diamond electrode modified with multiwalled carbon nanotubes (MWCNTs-BDDE) and β-cyclodextrin (β-CD, β-CD-MWCNTs-BDDE) for the determination of the fungicide carbendazim (Cbz) is described for the first time. Cbz oxidation response was observed in the Britton-Robinson buffer supporting electrolyte in a pH range from 2.3 to 6.0 in potential range from + 1.0 to + 1.3 V vs SCE. The SWAdSV peak current of Cbz oxidation response on β-CD-MWCNTs-BDDE with peak maxima close to + 1.2 V vs SCE at pH 4.0 was linear over the wide linear dynamic range of 6.72 × 10 . The obtained results demonstrated the viability of the proposed methodology for determination of Cbz in river water samples containing low concentrations of Cbz. Moreover, the effect of Cbz on the corrosion properties of an AISI type 316 L stainless steel used to fabricate farming equipment and tools was tested by means of the potentiodynamic method. The characterization and evaluation of the corrosion inhibition effect raised from the use of Cbz was performed using optical microscope.

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Section: Chemicals and Solutionsmentioning

confidence: 99%

β-Cyclodextrin and multiwalled carbon nanotubes modified boron-doped diamond electrode for voltammetric assay of carbendazim and its corrosion inhibition behavior on stainless steel

Brycht

Vajdle

Sipa

et al. 2017

Ionics

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“…The formation and crystal forms of nanoparticles were closely related to the agglomeration phenomena. It is generally believed that the outermost layers of the molecular structure of HA were O and Ca [26,27]. These are two different atoms with attractive interactions, resulting in hard agglomerates.…”

Section: In Vivo Experiments and Characterization With Specimensmentioning

confidence: 99%

Mechanical properties and in vivo study of modified-hydroxyapatite/polyetheretherketone biocomposites

Wang³

et al. 2017

Materials Science and Engineering: C

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Polyether ether ketone (PEEK) has received much attention for its excellent mechanical properties and biocompatibility. Here, the silane coupling agent KH560 [γ-(2,3-epoxypropoxy)propyltrimethoxysilane] is used for graft modification of bioactive HA (hydroxyapatite) particles and for preparing HA/PEEK composites via a hot-press molding method. The prepared HA/PEEK composites were tested for their mechanical properties with SEM (scanning electron microscopy), infrared spectroscopy, and thermo-analysis. The results show that silane coupling KH-560 modifies HA successfully and that the tensile strengths of HA/PEEK and m-HA/PEEK composites indicate an increasing and then a decreasing tendency with increasing HA contents. The non-modified HA/PEEK composites display the same trend as the modified specimens with lower tensile strength and consist of sharp points. When the HA content is 5wt.%, the tensile strength of m-HA/PEEK composite reaches its maximum, which is 23% higher than that of pure PEEK specimens. The in vivo experiments of m-HA/PEEK used a biomechanical push-out test, SEM, optical microscopy, and an Image-Pro Express C image analysis system. The growth of the bone tissues around the m-HA/PEEK composites with an HA content of 5wt.% is better than that of specimens with different HA contents. This finding shows the nano-scale effect of the bioactive filler HA in PEEK substrates, which obviously contributes to the growth of the surrounding bone issues in vivo. This study could provide theoretical support for the further promotion and application of high-performance engineering plastics such as PEEK in biomedical fields.

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“…2 The amperometric glucose sensors are either enzymatic or non-enzymatic. 3,4 The development of former sensors took a leap after development of first enzyme-based sensor in 1962. In spite of the tremendous research in the field of enzyme-based sensors still the need remains for development of highly stable sensors.…”

Section: Introductionmentioning

confidence: 99%

Amperometric Enzyme-Free Glucose Sensor Based on Electrodeposition of Au Particles on Polyaniline Film Modified Pt Electrode

Malhotra

Tang

Varshney

2018

ACSi

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An amperometric non-enzymatic glucose sensor of high sensitivity was developed by modification of Pt electrode with electrodeposition of Au particles on polyaniline film. The Au particles were deposited under optimum growth conditions for maximum dispersion on polymer film to achieve highly sensitive glucose sensor. The characterization of the electrode and the analytical parameters were evaluated using chronoamperometry and cyclic voltammetry techniques. The sensor showed wide linear range from 0.01-8 mM along with swift response time of less than 5 s. Moreover, a high sensitivity of 113.6 µA mM-1 cm-2 is obtained along with low detection limits of 0.5 µM. The sensor also showed high stability, reproducibility, and repeatability. Furthermore, the sensor has shown high selectivity towards glucose exclusively in the presence of interferents such as sucrose, uric acid, and ascorbic acid. The practical applicability of the proposed sensor was confirmed from successful analysis of glucose in different juice samples and these results were comparable to the commercial glucose meter. Thus, our sensor stands promising non-enzymatic sensor for routine analysis of glucose.

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Hydrodynamic chronoamperometric determination of hydrogen peroxide using carbon paste electrodes coated by multiwalled carbon nanotubes decorated with MnO2 or Pt particles

Cited by 34 publications

References 44 publications

β-Cyclodextrin and multiwalled carbon nanotubes modified boron-doped diamond electrode for voltammetric assay of carbendazim and its corrosion inhibition behavior on stainless steel

β-Cyclodextrin and multiwalled carbon nanotubes modified boron-doped diamond electrode for voltammetric assay of carbendazim and its corrosion inhibition behavior on stainless steel

Mechanical properties and in vivo study of modified-hydroxyapatite/polyetheretherketone biocomposites

Amperometric Enzyme-Free Glucose Sensor Based on Electrodeposition of Au Particles on Polyaniline Film Modified Pt Electrode

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