Glassy carbon
Electrochemical behavior of ruthenium-hexacyanoferrate modified glassy carbon electrode and catalytic activity towards ethanol electrooxidation
... The successful modification of the glassy carbon electrode surface with RuHCF was evidenced by the cyclic voltammogram, as shown in Figure 1. No electrochemical process is observed on the bare electrode ...
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Improved immobilization of laccase on a glassy carbon electrode by oriented covalent attachment
... It is well known that an enzyme, when immobi- lized, sometimes turns out to be more resistant to heat and chemicals than the native enzyme (Martinek et al., 1977). he protein content on the electrode work- ing surface ...
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Adsorptive Stripping Voltammetric Determination of Hydroquinone using an Electrochemically Pretreated Glassy Carbon Electrode
... A simple and efficient adsorptive stripping voltammetric (AdSV) method was developed for the determination of hydroquinone at an electrochemically pretreated glassy carbon (GC) electrode in waste water. ...
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Fabrication Of Gold Nanoparticles-Modified Glassy Carbon Electrode And Its Application For Voltammetric Detection Of CrIII
... EDS analysis. The shape and size distribution of AuNPs deposited at GCE surfaces were confirmed in the present study. SEM images of GCE surfaces before and after AuNPs modification and its corresponding X-ray EDS ...
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Direct chronopotentiometric analysis of riboflavin using a glassy carbon vessel as the working electrode
... the content range 0.05 - 4 mg/dm 3 with a relatively low detection limit of 0.018 mg/dm 3 provided by the large surface area of the used macroelectrode. LOD could be additionally decreased using an analyser able to ...
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Decolourization of anthraquinone reactive dye by electrochemical reduction on reticulated glassy carbon electrode
... reticulated glassy carbon electrode in aqueous solution could form the basis of convert the anthraquinone group but the technique is not efficient to promote the total degradation of reactive dye bearing ...
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Electrocatalytic Oxidation of Venlafaxine at a Multiwall Carbon Nanotubes-Ionic Liquid Gel Modified Glassy Carbon Electrode and Its Electrochemical Determination
... multi-wall carbon nanotube modified glassy carbon electrode (MWCNTs/GCE), and a glassy carbon electrode modified by multi-wall carbon nanotube and the room temperature ionic ...
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Glassy carbon electrode modified with poly(taurine)/TiO2-graphene composite film for determination of acetaminophen and caffeine
... All electrochemical experiments were carried out with a CHI660D electrochemical workstation (CH Instruments, Shanghai). A conventional three-elec- trode system was used for all electrochemical experi- ments, which ...
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Electrochemical Reduction Using Glassy Carbon Electrode in Aqueous Medium of a Potential Anti-Chagas Drug: NFOH
... Nitrofurazone 共NF兲 presents activity against Chagas’ disease, yet it has a high toxicity. Its analog, hydroxymethylnitrofurazone 共NFOH兲, is more potent against Trypanosoma cruzi and much less toxic than the parent drug, ...
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J. Braz. Chem. Soc. vol.24 número10
... In all experiments, the iron(III) tetraphenylporphyrin (TPP) catalyst was introduced in the DMSO solution as Fe(TPP)Cl. Figure 2 demonstrates a typical cyclic voltammograms (CVs) of the Fe(TPP)Cl complex in DMSO solution ...
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J. Braz. Chem. Soc. vol.26 número5
... a glassy carbon electrode modified by iridium oxide nanoparticles (GCE/IrOxNPs) as an amperometric sensor for the electrocatalytic oxidation of an ...
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A fully protected hydrogenase/polymer-based bioanode for high-performance hydrogen/glucose biofuel cells
... the glassy carbon working electrodes were subsequently polished using several alumina/water suspensions with decrease particle grain size (going from 1 µm, via ...
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J. Braz. Chem. Soc. vol.20 número3
... modified glassy carbon electrode was that obtained by the difference of the current observed at ...unmodified glassy carbon electrode, ...
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J. Braz. Chem. Soc. vol.25 número3
... (glassy carbon and platinum disc, 2 mm diameter, from Metrohm), an Ag/AgCl (saturated aqueous KCl) reference electrode, and a spiralized platinum auxiliary ...for glassy carbon working ...
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J. Braz. Chem. Soc. vol.20 número8
... In this work, the interaction of doxorubicin with calf thymus double strand Deoxyribonucleic acid (ds-DNA) has been investigated with the use of Methylene Blue (MB) dye as a probe by the application of UV-Vis ...
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Mat. Res. vol.11 número4
... In this work a one-step synthesis of organofunctionalised cetyltri- methylammonium bromide (CTAB)-template silica thin films, using 3-mercaptopropyltrimethoxysilane (MPTMS) like an organotrialkox- ysilane is presented. ...
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Electrochemical evaluation of lipophilic antioxidants from Iryanthera juruensis fruits (Myristicaceae)
... Cyclic voltammograms obtained for oxidation of tocotrienols 1 and 2 in CH 2 CL 2 /0.1 M Bu 4 NBF 4 at glassy carbon electrode presented only one anodic at +0.23V and +0.32V, respectively, as shown in Figure ...
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Strategies for developing NADH detector based on meldola blue in different immobilization methods: A comparative study
... Electrochemical measurements were carried out by using a PAR 263 potenciostat/galvanostato (EG&G), Princeton Applied Rechearch Princeton, controlled by a personal computer. The experiments were performed at room ...
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Sensitive determination of dihydronicotinamide adenine dinucleotide and ethanol with a nano-porous carbon electrode
... pretreated glassy carbon electrode, GCE (diameter 3 mm), as the working electrode, a Pt wire as the auxiliary electrode and a saturated calomel electrode (SCE) as the reference electrode (all potentials are ...
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Nitrofurazone and its nitroheterocyclic analogues: a study of the electrochemical behavior in aqueous medium
... The biological action of drugs with potential antichagasic activities can be better understood by knowing their reduction mechanism. For this proposal, the electrochemical reduction of nitrofurazone (NF) and its ...
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