Elaboration and characterization of ITO electrode modified by transition metal dispersed into polyaniline thin films
| Autor: | Dalila Chouder, Ouafia Belgherbi, M. A. Saeed |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Indium tin oxide Dielectric spectroscopy chemistry.chemical_compound Nickel chemistry Chemical engineering Polyaniline Electrical and Electronic Engineering Thin film Fourier transform infrared spectroscopy Cyclic voltammetry 0210 nano-technology Dispersion (chemistry) |
| Zdroj: | Optik. 171:589-599 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2018.06.102 |
| Popis: | This work presents the characteristics of composite materials thin films of polyaniline (PAni) and nickel (Ni) particles deposited onto indium tin oxide (ITO) substrate. The electropolymerization of aniline was performed in acidic medium by potentiodynamic methods. The nickel particles were electrochemically deposited on the surface of PAni/ITO by reducing metal ions (Ni2+) using a potentiostatic method from a separate solution. The effect of applied potential as well as immersing time of complexation on the amount of nickel dispersed was investigated. Different characterization techniques were employed to study the electrochemical behavior and surface characteristics of the Ni-PAni/ITO thin films such as Electrochemical Impedance Spectroscopy (EIS), Cyclic Voltammetry, Fourier Transform Infrared Spectroscopy (FTIR), UV–vis Spectroscopy, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The morphology of the obtained composites shows a uniform dispersion of nickel particles onto the polyaniline matrix and reveals that the immersing times of complexation has a significant effect on the amount of incorporated particles. The impedance spectroscopy study reveals that the conductivity of the composite film increases with the amount of nickel incorporated. UV–vis and FTIR results confirm the presence of PAni and Ni particles on the electrode surface. |
| Databáze: | OpenAIRE |
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