Facile synthesis of cube-shaped Fe3O4 mesoporous nanoparticles and their application for electrochemical determination of Cu (II) in aqueous solutions through the mediating effect of indigo carmine

[Display omitted] •Facile synthesis of cubic shape amine-functionalized mesoporous Fe3O4 nanoparticles.•Preparation of a modified carbon paste electrode using AF-meso-Fe3O4NPs and MWCNTs.•Electrochemical determination of Cu2+ through the mediating effect of indigo carmine. We developed an electroche...

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Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2022-12, Vol.286, p.116057, Article 116057
Main Authors: Noroozi, Soodeh, Hashemnia, Sedigheh, Mokhtari, Zaynab
Format: Article
Language:English
Subjects:
Anodizing
Aqueous solutions
Complex formation
Copper
Cube-shaped Fe3O4 mesoporous nanoparticles
Diffraction patterns
Hydrogen bonding
Indigo
Indigo carmine
Infrared spectroscopy
Iron oxides
Multi wall carbon nanotubes
Nanoparticles
Oxidation
Synthesis
Voltammetry
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Summary:[Display omitted] •Facile synthesis of cubic shape amine-functionalized mesoporous Fe3O4 nanoparticles.•Preparation of a modified carbon paste electrode using AF-meso-Fe3O4NPs and MWCNTs.•Electrochemical determination of Cu2+ through the mediating effect of indigo carmine. We developed an electrochemical copper sensor that was constructed by a modified carbon paste electrode with Fe3O4 mesoporous nanoparticles and multiwall carbon nanotubes. The Fe3O4 nanoparticles with sizes of 24–36 nm were synthesized by a hydrothermal method. The size and morphology of the nanoparticles were investigated by SEM, TEM images and X-ray diffraction patterns, and the results showed cubic shaped nanoparticles with porous structure. The Nitrogen adsorption − desorption isothermal measurements indicated that the prepared nanoparticles had two types of pore sizes of 4 nm and about 20 nm. The FT-IR spectroscopy revealed that the indigo carmine (IC) dye had a high tendency toward the as-synthesized nanoparticles through hydrogen bonding. The voltammetric techniques were employed to investigate the IC redox behavior and the complex formation between Cu2+ and IC. The decrease of IC oxidation peak, along with an obvious anodic shift potential, was observed because of the complex formation between IC and Cu2+.
ISSN:0921-5107
1873-4944
DOI:10.1016/j.mseb.2022.116057