Electrochemical impedance
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In the present study, a complex between 8-hydroxyquinoline and cerium (III) (CeHQ) was synthesized in the presence of triethylamine. Afterwards, the complex was characterized by Field Emission Scanning Electron Microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR) and Thermo-Gravimetric Analysis (TGA). The inhibition efficiency of the Ce-HQ complex for the corrosion of carbon steel, evaluated by both Electrochemical Impedance Spectroscopy (EIS) and Potentiodynamic Polarization (PP) plots, reached 90 % after 2 h of immersion in a 0.01 M NaCl solution.
13p dianmotminh02 03-05-2024 4 2 Download
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Ebook "Electrochemical impedance spectroscopy and its applications" presents a complete overview of the powerful but often misused technique of Electrochemical Impedance Spectroscopy (EIS). The book presents a systematic and complete overview of EIS. The book carefully describes EIS and its application in studies of electrocatalytic reactions and other electrochemical processes of practical interest. This book is directed towards graduate students and researchers in Electrochemistry.
369p tudohanhtau1006 29-03-2024 2 1 Download
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Ebook "Electrochemical impedance spectroscopy in PEM fuel cells: Fundamentals and applications" comprises six chapters and contains comprehensive information on the fundamentals of PEM fuel cells, as well as the basic principles of EIS electronics, measurements, and applications. Chapter 1 introduces readers to the general field of PEM fuel cells, including an overview of fuel cell history, the different types of fuel cells, and electrochemical approaches in fuel cell studies.
428p manmanthanhla0201 26-02-2024 1 1 Download
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The oncogenic human papillomavirus (HPV) is an excellent biomarker for cervical cancer screening. The present research reports the construction of an integrated sensor platform (biosensorMY11 and biosensorp53) for the impedimetric detection of the HPV L1 sequence and p53 tumor suppressor gene.
9p viberbers 09-08-2023 6 2 Download
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Poly(3-hexylthiophene-2,5-diyl) (P3HT) chains were grown on the surface of thiophene functionalized polypropylenimine tetramine (PPI-TH) and N-methylpyrrole functionalized polypropylenimine tetramine (PPI-PY) using chemical oxidation polymerization.
16p viberbers 09-08-2023 4 3 Download
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Manganese (IV) oxide/electrochemically reduced graphene oxide (MnO2/ErGO) composite was synthesized in an oxidation-reduction process followed by electrochemical reduction. The obtained materials were characterized with X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) with energy-dispersive X-ray mapping (EDX mapping).
16p viberbers 09-08-2023 5 3 Download
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Ag-doped CuFe2O4 nanoparticles (ACNPs) with cubic and tetragonal spinel structures were synthesized by the Jatropha-oil assisted combustion method and their properties were well characterized.
7p viberbers 09-08-2023 6 3 Download
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The catalyst showed an excellent photocatalytic activity (PCA) for the degradation of TY dye due to reduction of photo generated electronehole pair recombination, thereby enhancing absorption.
10p viberbers 09-08-2023 6 3 Download
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In the present work, a modified b-nickel hydroxide (b-Ni(OH)2) electrode material with CuO has been prepared using a co-precipitation method. The structure and property of the modified b-Ni(OH)2 with CuO were characterized by X-ray diffraction (XRD), Fourier Transform infra-red (FT-IR), Raman and thermal gravimetric-differential thermal analysis (TG-DTA) techniques.
6p viberbers 09-08-2023 6 4 Download
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In this study, PbO2-TiO2 composite was prepared on stainless steel (SS) substrate by cyclic voltammetry (CV) method from mixed solution containing TiO2 sol-gel with size from 10 to 50 nm. In the electrochemical deposition, TiO2 nanoparticle will disperse in the growing PbO2 coating to create PbO2-TiO2 composite.
10p vidudley 20-02-2023 4 2 Download
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Sm0.2Ce0.8O1.9 (SDC20) electrolytes were synthesized with cellulose templating (CT) and PVA templating (PVAT) methods. Powder characteristics were examined using TG/DTA, XRD, and SEM. Pellets are sintered at various temperatures for different durations. Mean grain sizes were calculated from SEM micrographs using the linear intercept method. Grain growth behavior of the electrolytes was investigated and the dominant diffusion mechanism was examined.
13p lyhuyenthu 31-01-2023 5 3 Download
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In the literature, there are some studies on the synthesis of heteroaryl and allylindoles by Stille cross-coupling reactions that offer advantages to the Suzuki reactions in view of the neutral conditions and the stability and accessibility of the tin derivatives. Previously, we have also synthesized 5-(2-thienyl) indole (5In-2Th) comonomer [39] and Th-, Cz-, and thiazole-based monomers by using Stille cross coupling reaction [37, 40, 41].
17p lyhuyenthu 31-01-2023 13 3 Download
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A glassy carbon electrode, modified with gold nanoparticles/over-oxidized poly-eriochrome black T film, was fabricated for sensitive determination of As(III) by stripping voltammetry in an acidic medium. The electrode surface properties were characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS).
15p lyhuyenthu 31-01-2023 7 1 Download
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The inhibition effect of hydroxyethylcellulose (HEC) on 1018 c-steel corrosion in 3.5% NaCl solution was investigated by using potentiodynamic polarization, electrochemical frequency modulation (EFM) and electrochemical impedance spectroscopy (EIS) techniques.
8p vihermione 06-01-2023 9 2 Download
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This work presented the corrosion protection performance of anticorrosion multi-metal hybrid (AC-2MH) complex additive for solder materials in corrosive media. The AC-2MH complex contained traditional additives and organic acids. The Electrochemical impedance spectroscopy results demonstrated the formation of active and passive protective layers on the surface of the alloys, which prevented the solder materials from corrosion.
7p viirenerosenfeld 26-05-2022 15 3 Download
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A simple approach to constructing a double-layer voltammetric sensor is described. The poly(malachite green) (PMG) and multiwalled carbon nanotubes (MWCNTs) were coimmobilized at the surface of the glassy carbon electrode (GCE) for fabrication of PMG/MWCNT/GCE. The modified electrode was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), differential pulse voltammetry (DPV), and chronoamperometric techniques.
15p langthannam 29-12-2021 9 0 Download
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The aim of this study was to examine qualitatively the effect of important electrochemical parameters on the faradaic impedance spectra of oxalic acid electroreduction. The impedance spectrum of a 3-step oxalic acid electroreduction mechanism was simulated by the solution of a faradaic impedance equation based on 3 state variables. Before the solution of the faradaic impedance equation, the electroreduction mechanism was analyzed and it was seen that this mechanism can be represented by an electrical circuit composed of 2 resistors and a capacitance or inductance.
15p langthannam 29-12-2021 17 0 Download
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Impedance measurement was used to quantify the amounts of PbSO4 and PbO in the initial stage of the oxidation. H3BO3 decreased the positive grid corrosion of all alloys, while impurities increased it. Although impurities increased the self-discharge during constant current discharge, H3BO3 was found to decrease it, except for the alloy containing the 3 impurities and the Cu-containing alloy. Under open-circuit conditions, H3 BO3 increased significantly the self-discharge rate, but impurities were found to suppress it.
15p langthannam 29-12-2021 7 0 Download
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The effects of propargyl alcohol (PA), propynol ethoxylate (PME), propargyl sulfonate (PS), and diethylaminopropyne (DEP) compounds as additives in a Watts bath on coating brightness, thickness, and efficiency were investigated and compared using electrochemical methods such as linear and square wave voltammetry (SWV), chronoamperometry, chronopotentiometry, electrochemical impedance (EIS), and X-ray fluorescence (XRF) spectroscopy.
15p langthannam 29-12-2021 5 0 Download
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Single-walled carbon nanotube (CNT) and chitosan composite (chitosan*CNT) based sensors were developed as DNA biosensors, and then they were applied for electrochemical investigation of the interaction between the anticancer drug mitomycin C (MC) and DNA. The oxidation signals of MC and guanine were monitored before and after the interaction process by differential pulse voltammetry (DPV). The DPV results were in good agreement with those of electrochemical impedance spectroscopy (EIS).
12p langthannam 29-12-2021 10 0 Download