Journal of electroanalytical chemistry (J ELECTROANAL CHEM )

Publisher: Elsevier

Journal description

Current impact factor: 2.87

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013/2014 Impact Factor 2.871
2012 Impact Factor 2.672
2011 Impact Factor 2.905
2010 Impact Factor 2.732
2009 Impact Factor 2.338
2008 Impact Factor 2.484
1996 Impact Factor 1.832
1995 Impact Factor 1.735
1994 Impact Factor 2.02
1993 Impact Factor 1.697
1992 Impact Factor 2.202

Impact factor over time

Impact factor
Year

Additional details

5-year impact 2.68
Cited half-life 0.00
Immediacy index 0.55
Eigenfactor 0.02
Article influence 0.65
ISSN 1572-6657

Publisher details

Elsevier

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    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months .
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    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PubMed Central after 12 months
    • Publisher last contacted on 18/10/2013
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: A label-free electrochemical immunosensor for sensitive determination of ractopamine (RAC) based on Au@Ag2S core@shell nanoparticles/magnetic chitosan/thionine matrix film (CSMCM) was simply fabricated. The CSMCM not only enhanced the loading capacity of the biomolecules and stability of the immunosensor by covalently immobilizing due to stable conjunction between S-bond of Ag2S shell and NH2-bond of biomolecules, but also provided a favorable microenvironment to maintain the activity of the immobilized biomolecules due to the excellent biocompatibility of magnetic chitosan. Thionine was fabricated into the matrix to increase the conductivity of the CSMCM. All contributions of the CSMCM observably increased the sensitivity and stability of the immunosensor compared with other references. Performance of the immunosensor was evaluated in terms of its detection limit, sensitivity, pH, time and temperature of incubation, selectivity, reproducibility, and stability in a lab setting. Under optimal conditions, the fabricated immunosensor in this work exhibited a linear response with RAC in the concentration range of 0.01-10 ng mL−1, with the low detection limit of 2.5 pg mL−1 (S/N = 3).
    Journal of electroanalytical chemistry 03/2015; 741:14-19.
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    ABSTRACT: A strong anodic peak observed in cyclic voltammetry measurements of palladium electrodes when adding glucose to chloride containing (0.1 M) slightly acidic (pH 5.3) unbuffered media was studied in detail. The peak was highly sensitive to glucose concentration (5-20 g/L). Experiments were conducted by variation of pH (1-13) and chloride concentration (0.5-50 g/L) of the medium over a wide range, as well as substituting chloride with bromide. The resulting data suggests dissolution of the electrode as a chloride complex as the root cause for the peak, which is triggered by the addition of glucose to the electrolyte. The organic substances are oxidised thereby removing the protecting oxide layer and enabling the dissolution. This reaction is only observed in a certain window confined by both pH and halide concentration.
    Journal of electroanalytical chemistry 03/2015; 741:1-7.
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    ABSTRACT: A promising electrochemical sensor was developed through electrodepositing copper nanoparticles (CuNPs) on overoxidized poly(3-amino-5-mercapto-1,2,4-triazole) (p-TAOX) film modified glassy carbon electrode (GCE). The composite electrode exhibits excellent selectivity and sensitivity towards ascorbic acid (AA), dopamine (DA), uric acid (UA) and tryptophan (Trp). Amino and thiol groups exposed to the p-TAOX layer are helpful for the electrodeposition of CuNPs. The combination of CuNPs and p-TAOX endows the sensor with large surface area, good biological compatibility, electrical conductivity and stability, and flexible and controllable electrodeposition process. The calibration curves for AA, DA, UA and Trp were obtained in the range of 240.0-750.0 μM, 0.6-21.6 μM, 4.0-103.0 μM and 4.0-144.0 μM with detection limits (S/N = 3) of 5.0 μM, 0.03 μM, 0.16 μM and 0.16 μM, respectively. In addition, the analytical performance of this sensor has been evaluated for simultaneous detection of AA, DA, UA and Trp in the urine and serum samples.
    Journal of electroanalytical chemistry 03/2015; 741:36-41.
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    ABSTRACT: In the present study, the functionalization of the magnetic particles (MP) with dendrimer was performed in order to obtain an enhanced voltammetric detection of nucleic acids upon to the electrode response. For this purpose, the streptavidin coated MPs were functionalized using the fourth generation poly(amidoamine) (PAMAM) dendrimer with 1,4-diaminobutane core (PDR) and then, they were applied for the first time in the literature for voltammetric DNA detection. After PDR modification onto the surface of MPs, the phosphate labeled DNA oligonucleotide (DNA ODN) was immobilized onto the surface of PDR/MPs by covalent coupling between amino groups of PDR and phosphate groups of DNA ODN. The microscopic characterization of MPs was performed by scanning electron microscopy (SEM) technique. The changes at the oxidation signals of PDR and guanine were evaluated by using differential pulse voltammetry (DPV) technique in combination with pencil graphite electrodes (PGEs). The enhanced electrode response with two folds increase at guanine signal was recorded by PDR/MPs comparison to the one of unmodified MPs. The concentrations of PDR and DNA ODN were optimized according to the changes at the electrode response. The detection limit was found to be 4.09 μg/mL (equals to 70 pmol in 110 μL sample).
    Journal of electroanalytical chemistry 03/2015; 741:51-55.
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    ABSTRACT: The preparation of amines from amides is one of the most important reactions in medicinal and industrial chemistry, but the electrochemical hydrogenation of dimethylformamide to trimethylamine is a completely unexplored field. In this work, we developed a convenient and efficient method for the electrosynthesis of trimethylamine through the selective electrochemical hydrogenation of dimethylformamide. Gas chromatography combined with mass spectrometry was used to analyze the product. The electrochemical hydrogenation of dimethylformamide to trimethylamine was achieved at Cu and Pd cathodes, which showed good electrocatalytic activity and afforded high yield and 96% conversion. The products were collected in gas sampling bags and then introduced into saturated sodium hydroxide solution to obtain high-purity trimethylamine gas (>99%).
    Journal of electroanalytical chemistry 03/2015; 741:32-35.
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    ABSTRACT: The crystal structure and electrochemical performance of Li ion cathodes doped and co-doped with Mg and F (Li1.167Mn0.548−xMgxNi0.18Co0.105O2−yFy where x = 0, 0.02 and/or y = 0, 0.02) was investigated. The effects of doping and co-doping were measured with XRD, XPS, and galvanostatic charge/discharge tests. The lattice constant and cell volume decreased when doped with Mg, while they increased when doped with F. The change in local structure was due to changes in the oxidation states of the transition metals. Mg doping decreases the Ni2+/Ni3+ ratio and increases the Mn3+/Mn4+ ratio, while F doping increases the Ni2+/Ni3+ ratio. The altered oxidation states of Ni and Mn also influence the electrochemical performance. Mg-and F-doped cathodes showed increased initial discharge capacity (253 mA h g−1) and cycle performance (95%) respectively when compared to the undoped performance (248 mA h g−1 and 86%). However, Mg and F doping deteriorates cycle performance and lowers discharge capacity respectively. While Mg and F doping had both positive and negative aspects, it was found that co-doping caused synergistic behavior, with the dopants offsetting the changes in local structure. This increased the discharge capacity (259 mA h g−1) and improved cycle performance (90%).
    Journal of electroanalytical chemistry 03/2015; 740:88-94.
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    ABSTRACT: A simple process in which a graphene oxide (GO)-Prussian Blue (PB)-3,4,9,10-perylenetetracarboxylic dianhydride derivative (PTC-NH2) nanocomposite film is spread onto a glassy carbon electrode (GCE) surface is described. Glucose oxidase (GOD) was adsorbed on the modified glass carbon electrode via the specific structure of hollow Pt nanospheres. This process was sufficient to prevent GOD from leaching away, and to improve the sensitivity of our sensor. To characterise the sensors, several techniques were employed, including transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, cyclic voltammetry (CV), electric impedance spectroscopy (EIS) and chronoamperometry. The resulting amperometric glucose biosensor exhibited a fast response time (within 5 s) and a good linear calibration range from 0.01 ± 0.06 mM to 5.23 ± 0.04 mM with a lower limit of detection of 3.3 μM (S/N = 3). Possible interferents, including ascorbic acid, l-cysteine, dopamine and ethanol, showed almost negligible electrochemical responses, indicating the high specificity of the proposed biosensor for glucose detection. The improved performance of the proposed electrode for detecting glucose in human serum was ascribed to the high surface-to-volume ratio and the excellent conductivity of the hollow Pt nanospheres. This skilful strategy of incorporating the GO/PB/PTC-NH2 nanocomposite film with hollow Pt nanospheres enhances the performance of the electrochemical sensor, which holds promising for application in bioassay analysis.
    Journal of electroanalytical chemistry 03/2015; 741:8-13.
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    ABSTRACT: Non-aqueous Li-air-batteries can provide potentially a very high energy density. The reaction at the positive electrode is the oxygen reduction reaction. Its products are lithium oxides (mainly Li2O2) that deposit as solid compound in the porous gas diffusion electrode (GDE). This can cause passivation of the electrode surface or clogging of gas diffusion pathway though the porous material. Here a new method is reported to measure in-situ the oxygen permeation though a GDE during the discharge process. It is based on the concepts of scanning electrochemical microscopy (SECM) in which a positionable microelectrode (ME) is used to detect the influx of oxygen in an deaerated electrolyte close to the outer surface of the GDE. However, no steady-state current for oxygen reduction at the ME can be obtained in Li-containing electrolytes because solid lithium oxides also deposit on the ME. Therefore, a pulsed potential program was developed that periodically removes deposits from the surface of the ME and eliminates the effect of surface passivation of the probe electrode. We validated this method by monitoring the oxygen reduction current at the ME as a result of oxygen permeating GDEs of different thickness.
    Journal of electroanalytical chemistry 03/2015; 740:82-87.
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    ABSTRACT: Nitrogen-doped hollow activated carbon nanofibers (HACNFs) have been prepared by the concentric electrospinning and the following NH3 activation. The as-obtained samples were directly used as supercapacitor electrode without binders and conductive additives. Owing to the unique hollow architecture and high N-doping level (8.2%), the HACNFs exhibit a high specific capacitance of 197 F g−1 at 0.2 A g−1, which is 1.33 times than that of the solid electrospun nanofibers activated in the same condition. The samples also possess a superior rate capability of 72.1% (143 F g−1) at 20 A g−1 and long-term cycling stability with a retention of 98.6% after 1000 cycles at 5 A g−1 in 6 M KOH.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: In this article, interconnected and staggered nickel sulfide nanosheets grown on nickel foam have been successfully prepared by an ultrasound-assisted soaking method using nickel hydroxide nanosheets as precursor. As electrode material for supercapacitor, the nickel sulfide nanosheets are characterized by cyclic voltammetry (CV), galvanostatic charge–discharge and electrochemical impedance spectroscopy (EIS) measurements. Owing to the unique structure, the nickel sulfide nanosheets exhibit excellent electrochemical performance, including high area capacitances (2.64 F cm−2) and remarkable cycling stability (90% retaining after 2000 cycling). Therefore, such a novel and facile synthetic route to synthesis the high-performance nickel sulfide nanosheets may open a new pathway to prepare sulfide materials with distinctive nanostructures and outstanding electrochemical performance. At the same time, asymmetric supercapacitor is fabricated with NiS-NF as positive material and active carbon as negative material. The asymmetric supercapacitor shows excellent long-term electrochemical stability and high energy density. All these results illustrate that the NiS-NF electrode is promising for potential application in supercapacitors and other fields.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: Electrodeposition of lead from the concentrated nitrate electrolyte in the potentiostatic regime of electrolysis has been investigated by the analysis of the potentiostatic current transients and scanning electron microscope (SEM). It was found that the process of Pb nucleation from the concentrated electrolyte follows Scharifker model based on the 3D (three-dimensional) instantaneous nucleation with diffusion-controlled growth. The deviations of the obtained dependencies from the theoretical prediction for this model have been also discussed. Needle-like and fern-like dendrites, as well as crystals of irregular shape (precursors of dendrites) were formed in the diffusion controlled electrodeposition. The SEM analysis of these dendritic forms revealed their 2D (two-dimensional) growth. The size of needle-like dendrites was considerably larger than the size of both the fern-like dendrites and the irregular crystals. Although the electrodeposition process occurred inside the linear diffusion layer of the macroelectrode, the shape and size of dendrites were determined by the effect of local diffusion fields formed around tips (spherical diffusion) and top edges (cylindrical diffusion) of protrusions formed in the initial stage of the electrodeposition. The growth rates under the conditions of spherical and cylindrical diffusion control were mutually compared and a faster growth under the conditions of the spherical, in relation to the cylindrical diffusion, was proved. The effect of the current density distribution on formation of the final forms of Pb dendrites was also discussed.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: Multi-walled carbon nanotube (MWCNT)-supported silver nanocatalyst Ag/MWCNT and binary silver-based nanocatalysts Agx–Mey/MWCNT (molar ratio x:y = 9:1, 8:2, 7:3; Me = Co, Cu, Ni, Sn) have been synthesized by using the NaBH4 reduction method. All catalysts have been studied in terms of structure and morphology by using X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Their electrocatalytic activity for oxygen reduction reaction (ORR) in 1 mol L−1 NaOH solution has been investigated with the linear scanning voltammetry on a rotating disk electrode. Results show that in terms of the ORR current density, Ag8Co2/MWCNT is the best among the three binary Ag–Co/MWCNT catalysts, Ag9Cu1/MWCNT is the best among the three binary Ag–Cu/MWCNT catalysts, Ag9Ni1/MWCNT is the best among the three binary Ag–Ni/MWCNT catalysts, and Ag9Sn1/MWCNT is the best among the three Ag–Sn/MWCNT catalysts. Their ORR current density follows the order: Ag8Co2/MWCNT > Ag9Ni1/MWCNT > Ag9Cu1/MWCNT > Ag9Sn1/MWCNT > Ag/MWCNT. The onset potential of ORR on the Ag8Co2/MWCNT is 0.005 V, which is slightly higher than that on the Ag/MWCNT. However, the Ag8Co2/MWCNT exhibits a much higher ORR diffusion current density of 3.16 mA cm−2@−0.3 V at 1600 rpm than the Ag/MWCNT. A four-electron reaction of ORR on the as-synthesized binary Ag-based catalysts is more dominant than a two-electron reaction. In addition, these catalysts are electrochemically inactive to methanol oxidation, showing high alcohol-tolerance.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: Three different morphologies of MnO2 nanocrystals (i.e., nanoparticles, nanobowls and nanotubes) were successfully synthesized. This work focused on the interference in electroanalysis of heavy metal ions on the three different MnO2 nanocrystals modified electrodes. Some interesting phenomena on the mutual interferences were observed. That is, on MnO2 nanoparticles, the mutual interference was different from that on MnO2 nanobowls (and nanotubes) when it was measured between Cd(II) and Zn(II). For studying the mutual interference between Pb(II) and Cd(II), the interference on MnO2 nanotubes was different from that on MnO2 nanoparticles (and nanobowls). This study further indicated the interference evidences from electrochemical detection of Zn(II), Cd(II) and Pb(II) on three different morphologies of MnO2 nanocrystals.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: This study discusses a simple and feasible method that involves in-situ polymerization of aniline in the presence of zinc acetate dihydrate [Zn(CH3COO)2·2H2O] and graphene nanoplatelets (GNP) for the preparation of high performance electrode material (PZG composite) for supercapacitor application. In the presence of metal salt [Zn(CH3COO)2·2H2O], the capacitance value is changed and increased enormously compared to the capacitance value of PANI/GNP (PG) composite. Thus, the proposed method gives specific capacitance value for the PZG composite is ∼688 F/g at a 10 mV/s scan rate which is very high compared to the specific capacitance value (∼340 F/g) of PG composite at the same scan rate. In the PZG composite, zinc acetate and GNP are successfully coated by PANI, which provides more active sites for nucleation and electron transfer path. In addition, the inter- and intra-molecular interactions among them facilitate the electron transfer path which plays an important role to enhance the capacitance value of the composite. Moreover, the prepared composite is electrically conducting in nature and shows electrical conductivity in the order of ≈4.67 × 10−2 S cm−1. In addition, PZG composite shows semi-conducting behavior. Field Emission Scanning Electron Microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM) have been studied for the morphological analysis of the PZG composite.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: Here, polydopamine derivative monolayer was generated by electro-polymerization of thiol dopamine derivatives modified on gold electrode, and the adhesion of polydopamine made it being a platform for secondary reaction. The influence of pH on the formation of polydopamine derivative was investigated. Horseradish peroxidase (HRP) was adhered on the polydopamine derivative monolayer electrode catalyzing the oxidation of H2O2. Cyclic voltammetry (CV) was used to detect the polydopamine monolayer as well as electrochemical catalysis of H2O2. Besides, electrochemical impedance spectroscopy (EIS) and atomic force microscope (AFM) were also employed to characterize the polymeric monolayer.
    Journal of electroanalytical chemistry 02/2015; 79:197-201.
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    ABSTRACT: Industrial iron sludge was used for the production of bulk Fe2O3, Fe2O3 nanoparticles and Fe2O3–carbon nanotube composite (Fe2O3–CNT) by using hydrothermal method. The structure and morphology of the catalysts were studied by X-ray diffraction (XRD), Fourier transform infrared (FTIR) and scanning electron microscopy (SEM) methods. Iron compounds were used as catalysts to modify the carbon paste electrode (CPE). The electro catalytic performance, kinetic parameters and mechanistic studies for hydrogen evolution reaction (HER) on the modified electrodes were investigated by linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA) electrochemical techniques. For each of the catalysts, the effect of important parameters such as catalyst and binder amounts in the electrode composition and pH were examined. For all of the modified electrodes, H2SO4 (2 M) solution had the best efficiency. The electrocatalytic activity at the optimum conditions of all the modified electrodes was in the order of Fe2O3–CNT > nano-Fe2O3 > bulk Fe2O3. The modified electrodes were resistive to passivation, and applying successive potential cycles on these electrodes improves the HER performance. Due to the low cost, simplicity, ease of preparation in a large scale and high performance, the electrodes could be promising cathodes for HER in acidic media.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: A simple and cost-effective method for the synthesis and stabilization of palladium nanospheres is proposed to fabricate an effective sensor for electroanalytical determination of hydrogen peroxide (H2O2). UV–visible spectroscopy and X-ray diffraction confirm the presence of palladium nanoparticles (Pd NPs), and Fourier transform infrared (FTIR) spectrometry validates the protective action of polyvinylpyrrolidone (PVP) towards the NPs. The size and morphology of the Pd NPs were investigated using transmission electron microscopy (TEM). The electrochemical characteristics of the electrode that is modified using PVP stabilized palladium nanospheres are evaluated using cyclic voltammetry (CV), chronoamperometry and electrochemical impedance spectroscopy (EIS). The optimized sensor exhibits unique sensing performance towards hydrogen peroxide detection. The versatility of the sensor is demonstrated by the detection limit down to 8 nM with a quick response time of 3 s and a good linear range of 0.01–1 μM. In addition, the sensor also displayed good selectivity against interfering electroactive species such as ascorbic acid (AA), uric acid (UA) and acetaminophen (AP). The simplicity in the synthesis methodology and substrate fabrication along with attractive features such as lower limit of detection (LOD), wide linear range, good reproducibility and long-term stability make the proposed sensor a promising candidate for potential applications in H2O2 analysis.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: Heteroatom doping is an effective way to modulate the electronic structure and properties of graphene. Despite a growing interest in sulfur (S)-doped graphene (SG), synthesis of high-quality SG at low cost remains a great challenge. In this study, we developed a rapid, efficient and cost-effective microwave-assisted solvothermal (MAS) method for the preparation of SG. It was found that a short MAS time of 6 min could generate few-layer SG (0.5 μm in lateral size) having effective oxygen reduction, high level of S-doping, sole thiophene-S bonding configuration, and high electrical conductivity. Furthermore, the resulting SG could serve as an effective electrocatalyst for H2O2 reduction, showing improved electrocatalytic activity over its undoped counterpart and good sensing performances for highly sensitive and selective detection of H2O2, indicating that SG may be a promising candidate for electrochemical sensor applications.
    Journal of electroanalytical chemistry 02/2015; 739.
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    ABSTRACT: Hierarchical WO3–TiO2 nanotube (WTNs) composite structures were obtained by anodization of titanium in a single-step process using sodium tungstate as the tungsten source. The resulting WTNs showed tubes with diameters in rang of 80–110 nm, wall thickness of 20–40 nm and tube lengths in the range of 7–8 μm. Diffuse reflectance spectra showed an increase in the visible absorption relative to pure TiO2 nanotubes (TNs). The photo-electrochemical performance was examined under simulated sunlight irradiation in 1 M NaOH electrolyte. Photo-electrochemical characterization shows that tungsten doping efficiently enhances the photo-catalytic water splitting performance of WTNs composite. The sample (WTNs-2) exhibited better photo-catalytic activity than the TNs and WTNs fabricated using other W concentrations. This can mainly be attributed to better charge carrier separation and transportation in photoelectrochemical water splitting by providing an effective way to address recombination losses in these composite materials.
    Journal of electroanalytical chemistry 02/2015; 739.