The Study of Thin Films by Electrochemical Impedance Spectroscopy

Cesiulis, H.; Цынцару, Н.; Ramanavičius, Arūnas; Рагойша, Г. А.

doi:10.1007/978-3-319-30198-3_1

Cited by 93 publications

(65 citation statements)

References 132 publications

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“…The control sample (PLS0) after 12 days of immersion and all of the samples exposed to the solutions with PLS showed two time constants at different frequency ranges which can be attributed to the change in surface morphology (65). This change may be related to the formation of a layer on the surface of steel.…”

Section: Eis Resultsmentioning

confidence: 96%

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

Nazari

Shihab

Cao

et al. 2017

Green Chemistry Letters and Reviews

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A liquid mixture was developed from waste peony leaves through a zero-waste chemical/biological process. The inhibition effect of different concentrations of peony leaves derived solution (0-3 vol.%, PLS0-3) on C1010 carbon steel in 3.5 wt.% NaCl was investigated over time using electrochemical measurements. Chemical analyses were performed to reveal the main compounds of this inhibitor. Surface analyses together with water contact angle measurements were employed to study the characteristics of the steel surface affected. Semi-empirical calculations with PM3 method were used to find the relationship between molecular structure and inhibiting effect of PLS. The inhibitor was stable over time and its main active ingredients were C 19 H 27 N 4 O 10 P and C 17 H 16 N 3 O 9 P that adsorb onto the steel surface, block cathodic active sites, make the surface hydrophobic, decrease the surface free energy, and facilitate the formation of a passive layer. A good correlation was found between experimentally determined inhibition efficiency and theoretically calculated properties of PLS.ARTICLE HISTORY

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Section: Eis Resultsmentioning

confidence: 96%

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

Nazari

Shihab

Cao

et al. 2017

Green Chemistry Letters and Reviews

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“…At a critical frequency (ω crit ), the control over the electrochemical reaction switches from kinetic to diffusion and vice versa. However, in many cases, the kinetics of metals electrodeposition is rather complicated because of the adsorption on the electrode of intermediates and solution components (e.g., ligands), coupled with charge transfer and diffusion processes, and the diffusion impedance can be hidden from the obtained spectra [96]. Therefore, it is impossible to distinguish on the obtained EIS spectra the frequency ranges for which the electrode processes occur under kinetics or the mass transfer control.…”

Section: Uniformity and Mass Transportmentioning

confidence: 99%

Electrodeposition of Iron-Group Alloys into Nanostructured Oxide Membranes: Synthetic Challenges and Properties

Cesiulis

Tsytsaru

Podlaha

et al. 2018

CNANO

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Background: Quasi-one dimensional nanostructures: nanowires, nanotubes, nanorods, nanobelts/nanoribbons and complex "nanowire-nanoparticle" composites have been synthesized over the years. These nanostructures are particularly appealing due to their specific properties defined by their high aspect ratio: two dimensions are in the nanoscale range and one dimension is in the microscale. Methods:One of the well-designed approaches for the synthesis of such nanostructured materials is template-assisted fabrication combined with electrodeposition. The fabrication approaches for the growth of iron-group alloy nanostructures inside nanoporous oxide membranes by means of different electrodeposition techniques, and the resulting unique properties and potential applications of this type of materials are reviewed. Results:Arrays of nanostructures can be obtained by filling a porous oxide template that contains a large number of straight cylindrical, nano-sized diameter holes. Generalities of metals electrodeposition into nanoporous oxide membranes are discussed. Measures to minimize the nonuniformity of deposits inside pores need to be addressed to thin the barrier layer, to control hydrogen evolution and to improve mass transport inside the pores. Examples of binary and ternary iron group alloys grown inside nanoporous oxide templates are provided. Catalytic hydrogen evolution and methanol oxidation on the nanowires arrays are described. The "sample size effect" on the magnetic properties of materials and the electrodeposition of multilayered structures necessary for giant magnetoresistance (GMR) are discussed in details. Conclusion:Electrodeposition of binary and ternary iron-group alloys confirm that controlling alloy composition inside nanopores is still a challenge. composites [7] have been synthesized over the years. These nanostructures are particularly appealing due to their specific properties defined by their high aspect ratio: two dimensions are in the nanoscale range and one dimension is in the microscale. One of the well-designed approaches for the synthesis of such nanostructured materials is template-assisted fabrication combined with electrodeposition, first reported by Possin [8] in track etched mica films, and expanded upon by others with different materials and templates [2,[9][10][11][12][13][14]. However, the self-organized porous anodic aluminum oxide (AAO) membrane has become one of the most often used templates for tunable synthesis of different nanostructured materials [15,16].

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“…A popular format for evaluating electrochemical impedance data consists on plotting the imaginary impedance component Z´´ against the real impedance component Z´, at each excitation frequency sets up the Nyquist plot [9]. Figure 1 presents the Nyquist plot of TiO2 sample at room temperature for the frequency range 10 Hz and 1 MHz, the effect of the applied dc bias voltage is showed in this picture, the electrical measurements were carried out from 100 to 400 mV In this picture a simple semicircle is observed with its origin on the real axis, the effect of the dc bias voltage modifies the open arc part of the Nyquist plot, whereas dc bias increases the radio of semicircle decreases and it is shifting toward lower Z´ real values.…”

Section: Impedance Spectroscopy (Is)mentioning

confidence: 99%

“…It may be used to investigate the dynamics of bound or mobile charge in the bulk or interfacial regions of any kind of solid or liquid material: ionic, semiconducting, mixed electronic-ionic, and even insulators (dielectrics) [7], [8]. This method consists in measuring the response of an electrode to a sinusoidal potential modulation at different frequencies [9]. A multitude of fundamental microscopic processes take place throughout the cell when it is electrically stimulated and, in concert, lead to the overall electrical response.…”

Section: Introductionmentioning

confidence: 99%

“…A multitude of fundamental microscopic processes take place throughout the cell when it is electrically stimulated and, in concert, lead to the overall electrical response. They include the transport of electrons through the electronic conductors, the transfer of electrons at the electrode-electrolyte interfaces to or from charged or uncharged atomic species which originate from the cell materials and its atmospheric environment (oxidation or reduction reactions), and the flow of charged atoms or atom agglomerates via defects in the electrolyte [9]. The impedance spectroscopy is useful to separate real and imaginary part of electrical parameters and hence used to study the electrical properties of materials [10].…”

Section: Introductionmentioning

confidence: 99%

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Impedance analysis of TiO2 nanoparticles prepared by green chemical mechanism

Alvaro¹,

Diana²,

Maria³

2018

ces

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Titanium dioxide nanoparticles were synthesized by a green synthesis mechanism by using a natural extract as a reducing agent. The electrical properties of TiO2 thin films deposited by doctor blade method has been investigated by impedance spectroscopy study and analyzed as a function of bias, temperature and frequency. Impedance spectroscopy analysis demonstrated that TiO2 nanoparticles obtained by this mechanism have semiconducting behavior. Showing a decreased of resistance with the increase of bias voltage and temperature.

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The Study of Thin Films by Electrochemical Impedance Spectroscopy

Cited by 93 publications

References 132 publications

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

Electrodeposition of Iron-Group Alloys into Nanostructured Oxide Membranes: Synthetic Challenges and Properties

Impedance analysis of TiO2 nanoparticles prepared by green chemical mechanism

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