New catalytically active composites based on poly(neutral red) and carbon nanomaterials

Pisarevskaya, E.Y.; Zhiraslanovna, O.S.; Leonidovich, K.A.; Alekseevich, P.V.; Nikolaevich, E.O.; Petrovna, K.G.

Авторы: Pisarevskaya Elena Yurievna, Ozkan Sveta Zhiraslanovna, Klyuev Alexey Leonidovich, Petrov Valeriy Alekseevich, Efimov Oleg Nikolaevich, Karpacheva Galina Petrovna
Журнал: Electrochimica Acta
Том: 540
Номер: 10
Год издания: 2025
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 147170
DOI: 10.1016/j.electacta.2025.147170
Аннотация: Poly(neutral red) (PNR) was synthesized by chemical oxidative polymerization of NR monomer and electrochemically. New nanocomposites thereof with carbon nanomaterials (CNM) were prepared and characterized. PNR prepared by chemical oxidative polymerization and CNM composites thereof were characterized by FT IR spectroscopy, XRD, FE-SEM, and TEM. Electrochemical behavior was studied by means of cyclic voltammetry and electrochemical impedance. Chemically prepared samples were applied to electrodes dropwise from a suspension in ethanol. The introduction of CNM was carried out both during chemical synthesis for SWCNT and MWCNT and directly on the electrode for reduced graphene oxide (RGO). In this case, a graphene oxide (GO) film applied from an aqueous suspension to the electrodes was impregnated with a neutral red (NR) solution, whereby GO as an oxidizer initiated NR polymerization and was partially reduced. The synthesis of the RGO/PNR composite after the electrode washing and cycling in 1 M H2SO4 continued for some time until the current increase at the maximum stops, and then the modified electrode was ready for operation. An equivalent circuit was proposed to explain the electrochemical behavior of PNR and CNM/PNR. CNM introduction was shown to increase PNR conductivity and electrocatalytic properties. For an example of the ferro/ferricyanide redox couple, chemically synthesized PNR and most CNM composites thereof appeared useful in electrocatalysis. that Further, PNR and composites thereof were found to increase the isoniazid oxidation current that could be probably used for the subsequent quantitative analysis.
Добавил в систему: Писаревская Елена Юрьевна

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New catalytically active composites based on poly(neutral red) and carbon nanomaterialsстатья

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