Showing papers in "Journal of Electroanalytical Chemistry in 2011"

TL;DR: In this article, the authors summarized the thermodynamic theory of multi-electron transfer reactions and its implications for electrocatalysis and discussed the fundamental differences between catalyzing reactions involving the transfer of one electron or no catalytic intermediates.

TL;DR: The electrochemical behavior of phenol, catechol, hydroquinone, resorcinol, dopamine, and para-substituted phenolic compounds, 4-ethylphenol, tyrosine, and tyramine, was studied over a wide pH range using a glassy carbon electrode as discussed by the authors.

TL;DR: In this article, almost 300 papers about ionic liquid-modified electrodes were published and they are reviewed here and they can be classified into three classes: carbon paste electrodes, carbon nanotubes and gel electrodes.

TL;DR: In this paper, a comparative study on electrosorptive behavior of commercial single walled and double walled carbon nanotubes (CNTs) and as-prepared graphene as potential electrode materials for capacitive deionization (CDI) was presented.

TL;DR: In this article, a voltammetric sensor for simultaneous determination of hydroquinone (HQ) and catechol (CC) was developed at a glassy carbon electrode modified with graphene (GR/GCE).

TL;DR: In this paper, a rotational drying procedure was proposed for making reproducible, smooth thin electrocatalyst films, by rotating the electrocat catalyst ink on the glassy-carbon electrode substrate at 700-rpm while it is drying.

TL;DR: In this article, the effect of applied current, supporting electrolyte concentration, air flow rate and pH on the generation of H 2 O 2 was investigated, and it was shown that the optimal conditions for H 2 o 2 generation were applied current of 100 mA (2.5 mA/cm 2 ), air flow ratio of 2.5 l/min, and pH = 3.6%.

TL;DR: In this paper, the suitability of 1 choline chloride:2 urea mixture, Deep Eutectic Solvent (DES) for the electrodeposition of cobalt, samarium and cobalt-samarium system has been studied.

TL;DR: In this paper, the diffusion coefficient of the triply charged ion was found to have a significantly lower diffusion coefficient than the doubly charged ion with a ratio of ∼ 0.71 in the KCl and KNO3 media.

TL;DR: In this article, a quantum dot-sensitized solar cells (QDSSCs) based on TiO2 film photoanode incorporated with different amounts of graphene are fabricated and their photovoltaic performances are investigated.

TL;DR: Ce-doped ZnO and pure znO nanocomposite thin films with different Ce/Zn ratios (0, 2, 5, 10, 15, 20, and 30) have been prepared by sol-gel method at optimum annealing temperature of 500°C as mentioned in this paper.

TL;DR: The results suggest that the proposed method can be applied as a simple, efficient alternative for the simultaneous monitoring of heavy metals in water samples and demonstrates the powerful application of carbon nanotubes in electrochemical analysis ofheavy metals.

TL;DR: In this article, the electrochemical behavior of the SiO anode during its reaction with Li has been investigated using solid-state nuclear magnetic resonance (NMR) and high resolution transmission electron microscopy (HRTEM).

TL;DR: In this article, an application of CO stripping-voltammetry as a diagnostic tool for the determination of surface composition of various PtRu nanoparticles (NPs) was reported, which is useful for assessment of catalyst homogeneity.

TL;DR: A carbon paste electrode (CPE) was modified by incorporation of carbon nanotubes and a molybdenum (VI) complex (MC) and studied in pH 7.0 by cyclic voltammetry (CV) as mentioned in this paper.

TL;DR: In this article, the particle size effect for ethanol oxidation on carbon supported platinum catalysts in the Pt particle size range from 2.2 to 3.6 was investigated both in half-cell and in a single direct ethanol fuel cells (DECF).

TL;DR: Li metal dendrite growth in LiPF6-propylene carbonate (PC) electrolyte was observed in situ by a laser scanning confocal microscope (LSCM) with a metallographic microscope.

TL;DR: Carbon-supported palladium-iron bimetallic electrocatalysts of different Pd to Fe ratios were prepared by a low temperature single step co-reduction method in alkaline media without any stabilizing agents.

TL;DR: In this paper, a novel bio-composite film which contains multi-walled carbon nanotube (MWNT)-chitosan (Chit)/poly(amidoamine) (PAMAM) nanocomposite along with the incorporation of DNA modified Au electrode as a biosensor for determination of dopamine(DA) and uric acid (UA) under coexistence of ascorbic acid(AA) was fabricated by layer-by-layer modification.

TL;DR: In this article, a functionalized carbon nanotubes paste electrode modified with cross-linked chitosan was used for the determination of trace amounts of cadmium(II) and mercury (II) by linear anodic stripping voltammetry.

TL;DR: In this paper, a novel electrochemical sensor based on the silver decorated carbon nanotube is reported for the accurate and rapid determination of hydrogen peroxide, which was synthesized separately and characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and XPS.

TL;DR: In this article, transmission electron microscopy (IL-TEM) was applied to a high surface area carbon supported Pt catalyst and the results showed that carbon support corrosion is dominating the degradation of the catalyst.

TL;DR: In this paper, the authors proposed an ECEC-first-order mechanism in which the two electron transfer steps and the two chemical follow-up deprotonation reactions are irreversible.

TL;DR: In this article, a simple procedure for constructing the photoelectrochemical biosensor based on TiO2/CdSe@CdS QD nanocomposite modified electrode was developed.

TL;DR: Using a combined spectro-electrochemical DEMS/ATR-FTIRS set-up, this paper investigated the adsorption/oxidation of glycerol on a Pt thin film electrode by potentiodynamic, potentiostatic, and adsorbate stripping experiments.

TL;DR: In this paper, it is suggested that the gradual improvement of the electrochemical performances of carbon-based capacitors at high current densities, following heat treatments up to 900°C, is mainly a consequence of the simultaneous increase in conductivity.

TL;DR: A simple and sensitive electrochemical method has been developed for the determination of acetyl salicylic acid (ASA) and caffeine (CAF) using edge plane pyrolytic graphite electrode (EPPGE) as mentioned in this paper.

TL;DR: In this article, a model for palladium deposition with multi-step mechanism is proposed to account for electrode kinetics, and the parameters of impedance model in this system can be calculated from the fitting of experimental data to the Faradaic impedance function derived theoretically.

TL;DR: In this article, disposable, electrochemically pretreated screen-printed carbon electrodes (SPCE*) can be employed for the simultaneous determination of aminophenol isomers in aqueous buffer solution.

TL;DR: In this article, a glassy carbon electrode (GCE) was used as a kind of superior electrochemical sensor for Chromium(VI) reduction, and a linear relationship between the reduction current and the concentration of chromium was obtained covering the concentration range from 2 to 230 ppb with excellent sensitivity (1.1 nA/ppb) and low detection limit (0.67 ppb).