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Synthesis, characterization, and applications of a novel poly(4-[pyrrol-1-yl methyl]benzoic acid)–silver composite Cover

Synthesis, characterization, and applications of a novel poly(4-[pyrrol-1-yl methyl]benzoic acid)–silver composite

Materials Science-Poland
Volume 42 (2024): Issue 4 (December 2024)
By: M. I. Benamrani,  I. Chikouche and  A. Zouaoui  
Open Access
|Dec 2024

Figures & Tables

Figure 1

Voltammograms of silver recorded from an FTO/glass electrode immersed in an aqueous solution containing 0.1 M NaNO3 and 5 × 10−2 M AgNO3 at υ = 100 mV/s with pH 5. (a) First run and (b) successive scans.
Voltammograms of silver recorded from an FTO/glass electrode immersed in an aqueous solution containing 0.1 M NaNO3 and 5 × 10−2 M AgNO3 at υ = 100 mV/s with pH 5. (a) First run and (b) successive scans.

Figure 2

Cyclic voltammetry curves of the monomer on an FTO/glass electrode recorded from a solution containing 4 × 10−3 M monomer, 10−1 M acetonitrile, and 10−1 M LiClO4, at the scanning speed of υ = 100 mV/s. (a) First run and (b) successive scans.
Cyclic voltammetry curves of the monomer on an FTO/glass electrode recorded from a solution containing 4 × 10−3 M monomer, 10−1 M acetonitrile, and 10−1 M LiClO4, at the scanning speed of υ = 100 mV/s. (a) First run and (b) successive scans.

Figure 3

Cyclic voltammograms of silver dissolution on the FTO/Glass electrode modified with a polymer film in an aqueous solution containing 0.1 M NaNO3 and recorded at the speed of υ = 100 mV/s. (a) First run and (b) successive scans.
Cyclic voltammograms of silver dissolution on the FTO/Glass electrode modified with a polymer film in an aqueous solution containing 0.1 M NaNO3 and recorded at the speed of υ = 100 mV/s. (a) First run and (b) successive scans.

Figure 4

(a) Nyquist diagrams of the FTO electrode prior to and after insertion of silver microparticles into the polymer film PPy-b relative to: (A) FTO electrode, (B) FTO electrode modified by the polymer film, and (C) after insertion and reduction of silver microparticles into PPy-b. (b) A zoom-in view of the region of low impedance.
(a) Nyquist diagrams of the FTO electrode prior to and after insertion of silver microparticles into the polymer film PPy-b relative to: (A) FTO electrode, (B) FTO electrode modified by the polymer film, and (C) after insertion and reduction of silver microparticles into PPy-b. (b) A zoom-in view of the region of low impedance.

Figure 5

SEM surface images of: (a) a film of PPy-b deposited on an FTO electrode and (b) a modified FTO/polymer (PPy-b) electrode after insertion and reduction of silver microparticles.
SEM surface images of: (a) a film of PPy-b deposited on an FTO electrode and (b) a modified FTO/polymer (PPy-b) electrode after insertion and reduction of silver microparticles.

Figure 6

XRF spectrum measured after the insertion and reduction of silver into the polymer film PPY-b.
XRF spectrum measured after the insertion and reduction of silver into the polymer film PPY-b.

Figure 7

AFM surface images of: (a) a film of PPy-b deposited on an FTO electrode and (b) a modified FTO/polymer (PPy-b) electrode after insertion and reduction of silver microparticles.
AFM surface images of: (a) a film of PPy-b deposited on an FTO electrode and (b) a modified FTO/polymer (PPy-b) electrode after insertion and reduction of silver microparticles.

Figure 8

Spectral distributions recorded from the films in the UV–visible range. Curve A: FTO substrate; curve B: polymer; curve C: inserted silver.
Spectral distributions recorded from the films in the UV–visible range. Curve A: FTO substrate; curve B: polymer; curve C: inserted silver.

Figure 9

Characteristic I(V) of the composite (polymer + Ag)/FTO.
Characteristic I(V) of the composite (polymer + Ag)/FTO.

Figure 10

Determination of the reverse saturation current of the composite.
Determination of the reverse saturation current of the composite.

Figure 11

Recorded voltammograms of water reduction in 0.1 M NaOH of different electrodes at the scanning speed of 100 mV/s.
Recorded voltammograms of water reduction in 0.1 M NaOH of different electrodes at the scanning speed of 100 mV/s.

Measured thickness and resistivity data_

FilmFTOPPy-bPPy-b + Ag
Thickness (nm)550385385
Resistivity (Ω cm)8.22 × 10−4 12.2 × 10−4 7.4 × 10−5

Fitted values of the components of electrical equivalent circuits of EIS data_

Electrode R s (Ω) R ct (MΩ) C p (μF) Z W (kΩ/s½)
PPy-b/FTO1642.872.93—
Ag + PPy-b/FTO1070.1644.2898.9
DOI: https://doi.org/10.2478/msp-2024-0041 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 11 - 20
Submitted on: Jul 12, 2024
Accepted on: Sep 2, 2024
Published on: Dec 14, 2024
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Conductive polymer,
Polypyrrole,
Composites,
Silver microparticles,
Catalysis,
Diodes
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2024 M. I. Benamrani, I. Chikouche, A. Zouaoui, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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