[PDF] Top 20 The Electrochemical Behavior of Nafion/Reduced Graphene Oxide Modified Carbon Electrode Surface and Its Application To Ascorbic Acid Determination

... and Nafion/rGO/GCE is shown in ...two carbon electrodes in blank KHP buffer solution (pH ...and Nafion/rGO/GCE (curve d) under similar conditions exhibited only one anodic oxidation peak at about ... See full document

... nanoparticle-decorated graphene oxide (Ag NPs-GO) nanocomposite based electrochemical biosensor for the detection of ascorbic acid using the ultra- sensitive electrochemical ... See full document

... as electrode material in electrochemical sensor. Graphene is considered to be a highly-studied carbon allotrope, owing to its excellent electrical conductivity, large surface ... See full document

... nanoparticles modified carbon screen- printed electrodes [20], pyridinium-based sol-gel film [21], self-assembled monolayer [22], and Graphene based modified electrodes ...[23,24]. ... See full document

... the electrochemical behavior of L-Met has an irreversible, and oxidation-oxidation ...big surface area of the excellent electro-oxidation capability of ...the modified electrode and are ... See full document

... Carbon nanotubes (CNTs) have received extensive attention due to their nanoscale dimensions and outstanding materials properties including ballistic electronic conduction, immunity from electromigration effects at ... See full document

... An electrochemical sensor based on graphene–Nafion nanocomposite film for voltammetric determination of acetaminophen (APAP) was ...A Nafion graphene oxide-modified ... See full document

... the reduced graphene, which was used to fabricate the modified ...as ascorbic acid and dopamine had different oxidation peak potentials at ...Chi/GR modified electrode ... See full document

... Graphene oxide (GO) was prefabricated from flake graphite according to the modified Hummers method [31] and dispersed in 100 mL double distilled water (for 100 mg GO) by ultrasound for 3 h, and then ... See full document

... the determination of CGA, such as high- performance liquid chromatography (HPLC) [6-10], capillary zone electrophoresis [11], near-infrared spectroscopy [12-14], liquid chromatography-mass spectrometry [15, 16], ... See full document

... chemically modified electrode (CME) has been widely reported to improve sensitivity and selectivity in determining amino acids, vitamins, DNA and ...film modified electrodes show an enhanced response ... See full document

... the electrochemical methods, with their easy implementation, their low cost and analytical performance, have detection of a number of ...compounds, carbon paste electroactive ...classical carbon ... See full document

... For tablet analysis, a tablet of vitamin C (labeled 150 mg) was finely ground and dissolved in 100 mL of distilled water. After filtration, 1.0 mL of the solution was diluted with 49mL of the buffer solution (pH 7.0) and ... See full document

... of graphene oxide nanosheet such as micromechanical cleavage [15] chemical vapour deposition [16], epitaxial growth [17], and thermal exfoliation [18], Chemical exfoliation of graphite ...graphite ... See full document

... the electrochemical tests were characterized by scanning electron microscopy (SEM) using Tescan Mira II and transmission electron microscopy (TEM) using Zeiss - EM10C at voltage of 80 ...specific surface ... See full document

... Graphene oxide (GO) was firstly synthesized from graphite according to the Hummers and Offeman ...was reduced and followed a typical procedure: the resulting GO dispersion (100 mL) was mixed with 70 ... See full document

... the determination remains a challenge because of the presence of large excess of ascorbic acid ...bare electrode are irreversible and therefore requires high over potential (Adams ... See full document

... All chemicals were obtained from Fischer (Loughborough, UK), unless otherwise stated. Deionised water was obtained from a Purite RO200-Stillplus HP System, (Purite Oxon., UK). Stock solutions of sodium orthophosphate ... See full document

... To acquire the data and a potential control, all the voltammetric experiments (cyclic voltammetry or differential pulse voltammetry) were conducted by a personal computer interfaced to a Metrohm model 797 VA Computrace, ... See full document

... the surface of SrFeME was also studied by chronoamormetric ...unmodified electrode (conventional carbon paste) at potential step of ...the modified electrode has a higher steady state ... See full document