Adsorption of anionic surfactant at the electrode–NaClO4 solution interface

Gugała-Fekner, Dorota; Nieszporek, Jolanta; Sieńko, Dorota

doi:10.1007/s00706-014-1382-7

Cited by 13 publications

(16 citation statements)

References 18 publications

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“…This can be only partially explained by the difference in the molecular mass of primary dopants, since all of them are monovalent and if the rates of polymer formation are the same, the highest mass is expected for the PEDOT/DS system. The opposite observation indicates the inhibitory effect of DS on the electropolymerization of EDOT, which can be explained by the adsorption of the surfactant molecules on electrode/electrolyte and polymer/electrolyte interface resulting in the modification of surface characteristics and electron transfer effectiveness [41]. These phenomena lead to the decrease in the rate of film formation in a similar way as it was reported in case of other surfactants, e.g.…”

Section: Electrochemical Polymerization Of Edotsupporting

confidence: 54%

Evaluation of drug loading capacity and release characteristics of PEDOT/naproxen system: Effect of doping ions

Krukiewicz

Kruk

Turczyn

2018

Electrochimica Acta

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Conducting polymers are versatile and robust materials that have recently become attractive as controlled drug delivery systems. Possessing ion exchangeable properties, they can serve as carriers for numerous biologically active species, showing particular applicability in neural tissue engineering and regional chemotherapy. In the pursuit of the design of the most effective controlled drug delivery system, we aimed to compare the performance of the conducting polymer-based matrix as a function of doping anion, using chloride, perchlorate and dodecyl sulfate, respectively, as the primary dopants. Due to their different ion radius and mobility, selected ions were found to provide substantial changes into polymer characteristics, having strong effects into the uptake and release of a model drug, naproxen sodium salt. PEDOT/ClO 4 matrix, particularly, was found to possess superior properties providing highest mass of the formed polymer (103.45 ± 10.09 µg cm -2 ), charge storage capacity (44.9 mC cm -2 ) and ion exchange capacity (0.122 ± 0.003 µmole cm -2 ), leading also to the highest amounts of loaded (0.024 ± 0.002 µmol cm -2 ) and released (from 0.71 ± 0.10 µg cm -2 to 1.61 ± 0.59 µg cm -2 ) drug.

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Section: Electrochemical Polymerization Of Edotsupporting

confidence: 54%

Evaluation of drug loading capacity and release characteristics of PEDOT/naproxen system: Effect of doping ions

Krukiewicz

Kruk

Turczyn

2018

Electrochimica Acta

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“…[21][22][23][24][25][26] The Frumkin isotherm ( Figure 6) constants were determined from the equation: and adsorption factor -A F obtained in linear tests of the Frumkin isotherm are presented in Table 2.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

The Effect of Adenine Adsorption on Zn (II) Electroreduction in Acetate Buffer

Gugała-Fekner

2018

ACSi

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The paper presents the thermodynamic analysis of adenine adsorption on a mercury electrode in an acetate buffer at pH 3 and pH 4. Adsorption energy and constants were determined using the Frumkin isotherm and the virial isotherm. Stronger adsorption in the buffer at pH 3 was observed in comparison to the buffer at pH 4. Using cyclic voltammetry and Faraday impedance measurement, an inhibitory effect of adenine on the kinetics of Zn (II) ion electro-reduction was observed.

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“…Surfactants and humic substances are other types of interfering substances occurring in natural water samples. They can adsorb on the surface of the electrode, which reduces access to it and may make it difficult to form a metallic film on it [ 44 ]. In order to investigate the effect of these substances on the cadmium peak current, experiments with non-ionic surfactant Triton X-100, cationic surfactant CTAB (cetyltrimethylammonium bromide), anionic surfactant SDS (sodium dodecyl sulfate), and biosurfactant Rhamnolipids were carried out.…”

Section: Resultsmentioning

confidence: 99%

Copper Film Modified Glassy Carbon Electrode and Copper Film with Carbon Nanotubes Modified Screen-Printed Electrode for the Cd(II) Determination

Wasąg

Grabarczyk

2021

Materials

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A copper film modified glassy carbon electrode (CuF/GCE) and a novel copper film with carbon nanotubes modified screen-printed electrode (CuF/CN/SPE) for anodic stripping voltammetric measurement of ultratrace levels of Cd(II) are presented. During the development of the research procedure, several main parameters were investigated and optimized. The optimal electroanalytical performance of the working electrodes was achieved in electrolyte 0.1 M HCl and 2 × 10−4 M Cu(II). The copper film modified glassy carbon electrode exhibited operation in the presence of dissolved oxygen with a calculated limit of detection of 1.7 × 10−10 M and 210 s accumulation time, repeatability with RSD of 4.2% (n = 5). In the case of copper film with carbon nanotubes modified screen-printed electrode limit of detection amounted 1.3 × 10−10 M for accumulation time of 210 s and with RSD of 4.5% (n = 5). The calibration curve has a linear range in the tested concentration of 5 × 10−10–5 × 10−7 M (r = 0.999) for CuF/GCE and 3 × 10−10–3 × 10−7 M (r = 0.999) for CuF/CN/SPE with 210 s accumulation time in both cases. The used electrodes enable trace determination of cadmium in different environmental water samples containing organic matrix. The validation of the proposed procedures was carried out through analysis certified reference materials: TM-25.5, SPS-SW1, and SPS-WW1.

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Adsorption of anionic surfactant at the electrode–NaClO4 solution interface

Cited by 13 publications

References 18 publications

Evaluation of drug loading capacity and release characteristics of PEDOT/naproxen system: Effect of doping ions

Evaluation of drug loading capacity and release characteristics of PEDOT/naproxen system: Effect of doping ions

The Effect of Adenine Adsorption on Zn (II) Electroreduction in Acetate Buffer

Copper Film Modified Glassy Carbon Electrode and Copper Film with Carbon Nanotubes Modified Screen-Printed Electrode for the Cd(II) Determination

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