0000000000672725

AUTHOR

Giuseppe Palleschi

showing 3 related works from this author

Highly selective detection of Epinephrine at oxidized Single-Wall Carbon Nanohorns modified Screen Printed Electrodes (SPEs)

2014

Oxidized Single-Wall Carbon Nanohorns (o-SWCNHs) were used, for the first time, to assemble chemically modified Screen Printed Electrodes (SPEs) selective towards the electrochemical detection of Epinephrine (Ep), in the presence of Serotonine-5-HT (S-5HT), Dopamine (DA), Nor-Epineprhine (Nor-Ep), Ascorbic Acid (AA), Acetaminophen (Ac) and Uric Acid (UA). The Ep neurotransmitter was detected by using Differential Pulse Voltammetry (DPV), in a wide linear range of concentration (2-2500 μM) with high sensitivity (55.77 A M(-1) cm(-2)), very good reproducibility (RSD% ranging from 2 to 10 for different SPEs), short response time for each measurement (only 2s) and low detection of limit (LOD=0.…

Neurotransmitters; Screen Printed Electrodes (SPEs); Selective detection; SWCNHs; Biosensing Techniques; Electrochemical Techniques; Electrodes; Epinephrine; Limit of Detection; Nanostructures; Oxidation-Reduction; Reproducibility of Results; Biophysics; Biomedical Engineering; Biotechnology; Electrochemistry; Medicine (all)NanostructureEpinephrineScreen Printed Electrodes (SPEs)ElectrodeBiophysicsAnalytical chemistryBiomedical EngineeringReproducibility of ResultBiosensing TechniquesElectrochemistryNanomaterialsSWCNHs; Screen Printed Electrodes (SPEs); Neurotransmitters; Selective detectionBiosensing TechniqueSelective detectionLimit of DetectionElectrochemistrySWCNHSettore CHIM/01 - Chimica AnaliticaNeurotransmitterElectrodesDetection limitSWCNHsReproducibilityElectrochemical TechniqueChemistryMedicine (all)Reproducibility of ResultsGeneral MedicineElectrochemical TechniquesNeurotransmittersAscorbic acidNanostructuresLinear rangeBiophysicElectrodeDifferential pulse voltammetryOxidation-ReductionNuclear chemistryBiotechnology
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Oxidized graphene in ionic liquids for assembling chemically modified electrodes: a structural and electrochemical characterization study

2012

Dispersions of graphene oxide (GO) nanoribbons in ionic liquids, ILs (either 1-butyl-3-methylimidazolium chloride (BMIM-Cl-) or 1-butylpyridinium chloride (-Bupy-Cl-)) have been used to assemble modified screen printed electrodes (SPEs). The graphene oxide/ionic liquid dispersions have been morphologically and structurally characterized by the use of several techniques: X-ray photoelectron spectroscopy (XPS), Fourier transform-infrared (FT-IR) spectroscopy, high-resolution-transmission electron microscopy (HR-TEM). The assembled modified SPEs have then been challenged with various compounds and compared to several electro-active targets. In all cases high peak currents were detected, as wel…

Settore CHIM/03 - Chimica Generale e InorganicaChemistryGrapheneAnalytical chemistryOxideGlassy carbonElectrochemistryAnalytical Chemistrylaw.inventionchemistry.chemical_compoundX-ray photoelectron spectroscopyChemical engineeringlawElectrodeIonic liquidSettore CHIM/01 - Chimica AnaliticaGraphitegraphene Ionic Liquids sensorsSettore CHIM/02 - Chimica Fisica
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Thermal Properties, Raman Spectroscopy and Tem Images of Neutron-Bombarded Graphite

2013

Neutron-irradiated graphite to a total dose of 3.6 × 1016 n cm−2 was studied by DSC, Raman spectroscopy and transmission electron microscopy (TEM). The Wigner energy of neutron-irradiated graphite was 9.5 J/g as measured by DSC; it was released with an exothermal peak at 220°C. The Raman spectroscopy has confirmed the expected effect caused by neutron irradiation of the graphite substrate. The TEM imaging has shown that neutron-irradiated graphite can be effectively exfoliated by sonication in comparison to pristine graphite, which under similar conditions does not exfoliate at all. The interstitial Frenkel defects in neutron-irradiated graphite are intercalated between the graphene layers …

inorganic chemicalsMaterials scienceSonicationAnalytical chemistrylaw.inventionsymbols.namesakelawneutrons irradiationGeneral Materials ScienceNeutronSettore CHIM/01 - Chimica AnaliticaGraphitePhysical and Theoretical ChemistryWigner effectSettore CHIM/02 - Chimica FisicaWigner energySettore CHIM/03 - Chimica Generale e Inorganicaintegumentary systemGrapheneOrganic ChemistrygrapheneGraphite neutrons irradiation graphene exfoliation Wigner energy Raman spectroscopy TEM imagingtechnology industry and agricultureGraphite neutrons irradiation graphene exfoliation Wigner energy Raman spectroscopyTEM imagingexfoliationExfoliation jointAtomic and Molecular Physics and OpticsTransmission electron microscopyRaman spectroscopyTEM imagingbiological sciencessymbolsGraphitelipids (amino acids peptides and proteins)Raman spectroscopy
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