Different electrochemical techniques for the electrosynthesis of poly methylene blue in sodium saccharin aqueous medium

The present work describes the electropolymerization of methylene blue (MB) on transparent fluorine-doped tin oxide (FTO) from an aqueous solution of sodium saccharin. Compact, homogeneous, and adherent films are successfully achieved on FTO by different electrochemical techniques such as cyclic vol...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2023, Vol.27 (3), p.667-678
Main Authors: El Fazdoune, M., Bahend, K., Ben Jadi, S., Oubella, M., García-García, F. J., Bazzaoui, E. A., Asserghine, A., Bazzaoui, M.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Aqueous solutions
Characterization and Evaluation of Materials
Chemical composition
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Conduction bands
Electrochemistry
Energy Storage
Fluorine
Methylene blue
Optical properties
Original Paper
Physical Chemistry
Polymerization
Raman spectroscopy
Sodium
Thin films
Tin oxides
X ray photoelectron spectroscopy
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Summary:The present work describes the electropolymerization of methylene blue (MB) on transparent fluorine-doped tin oxide (FTO) from an aqueous solution of sodium saccharin. Compact, homogeneous, and adherent films are successfully achieved on FTO by different electrochemical techniques such as cyclic voltammetry (CV), chronoamperometry (CA), and chronopotentiometry (CP). Scanning electron microscopy (SEM) shows that the obtained PMB films are thin and smooth. Raman spectroscopy and X-ray photo-electron spectroscopy (XPS) techniques were used to confirm the chemical composition of poly methylene blue (PMB) deposited on FTO and doped by saccharin counter ions. Optical characterization of PMB was achieved by UV-visible spectroscopy. The PMB presents an absorption in the visible range with an optical band gap of around 1.59 eV, which represents the conduction band and makes the system interesting for photovoltaic applications.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-022-05362-0