КФУ. Карточка публикации. An Electrode Based on Manganese Dioxide Nanorods and Hexadecylpyridinium Bromide for the Rosmarinic Acid Voltammetric Assay

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AN ELECTRODE BASED ON MANGANESE DIOXIDE NANORODS AND HEXADECYLPYRIDINIUM BROMIDE FOR THE ROSMARINIC ACID VOLTAMMETRIC ASSAY

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2023

Язык

английский

Авторы, сотрудники КФУ

Зиятдинова Гузель Камилевна, автор

Библиографическое описание на языке оригинала

Ziyatdinova, G. An electrode based on manganese dioxide nanorods and hexadecylpyridinium bromide for the rosmarinic acid voltammetric assay // Eng. Proc. – 2023. – V. 56. – № 1. – Art. 202. – 6 p.

Аннотация

Nanostructures of transition metal oxides have shown to be effective sensing layers of electrodes used in electroanalytical chemistry. Manganese dioxide nanorods (MnO2 NRs) are of interest and have been applied in colorant electroanalysis. An electrode modified with MnO2 NRs prepared in hexadecylpyridinium bromide (HDPB) medium is developed for rosmarinic acid quantification. The application of HDPB as a dispersive agent provides stabilization of nanomaterial suspension in a water medium. The developed electrode gives an improved response to rosmarinic acid, i.e., 60 mV redox peak potential separation and 1.7-fold increased redox currents have been observed. Quasi-reversible electrooxidation controlled by surface processes has been confirmed. The analytical response of rosmarinic acid has been obtained by differential pulse voltammetry (DPV) in Britton–Robinson buffer (BRB) pH 5.0. The method makes possible rosmarinic acid determination from 2.5 × 10−8 to 1.0 × 10−6 M and from 1.0 × 10−6 to 1.0 × 10−5 M and provides a detection limit equal to 9.7 × 10−9 M. These characteristics are improved vs. reported electrochemical approaches. The selectivity of the electrode response to rosmarinic acid is shown using a 1000-fold excess of inorganic ions, 100-fold excesses of saccharides, and 10-fold excesses of ascorbic and p-coumaric acids, eugenol, carvacrol, and thymol. Other phenolic acids (gallic, ferulic, caffeic) and flavonoids (quercetin, rutin) give an interference effect. Rosemary spices have been studied to prove the practical applicability of the MnO2 NRs-based electrode.

Ключевые слова

Modified electrodes, voltammetry, metal oxide nanomaterials, natural phenolics, rosmarinic acid

Название журнала

Engineering Proceedings

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186461139&doi=10.3390%2fASEC2023-15254&partnerID=40&md5=8a5b558426ac9a17d732344dd3f87972

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https://repository.kpfu.ru/?p_id=297463

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Зиятдинова Гузель Камилевна	ru_RU
dc.date.accessioned	2023-01-01T00:00:00Z	ru_RU
dc.date.available	2023-01-01T00:00:00Z	ru_RU
dc.date.issued	2023	ru_RU
dc.identifier.citation	Ziyatdinova, G. An electrode based on manganese dioxide nanorods and hexadecylpyridinium bromide for the rosmarinic acid voltammetric assay // Eng. Proc. – 2023. – V. 56. – № 1. – Art. 202. – 6 p.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=297463	ru_RU
dc.description.abstract	Engineering Proceedings	ru_RU
dc.description.abstract	Nanostructures of transition metal oxides have shown to be effective sensing layers of electrodes used in electroanalytical chemistry. Manganese dioxide nanorods (MnO2 NRs) are of interest and have been applied in colorant electroanalysis. An electrode modified with MnO2 NRs prepared in hexadecylpyridinium bromide (HDPB) medium is developed for rosmarinic acid quantification. The application of HDPB as a dispersive agent provides stabilization of nanomaterial suspension in a water medium. The developed electrode gives an improved response to rosmarinic acid, i.e., 60 mV redox peak potential separation and 1.7-fold increased redox currents have been observed. Quasi-reversible electrooxidation controlled by surface processes has been confirmed. The analytical response of rosmarinic acid has been obtained by differential pulse voltammetry (DPV) in Britton–Robinson buffer (BRB) pH 5.0. The method makes possible rosmarinic acid determination from 2.5 × 10−8 to 1.0 × 10−6 M and from 1.0 × 10−6 to 1.0 × 10−5 M and provides a detection limit equal to 9.7 × 10−9 M. These characteristics are improved vs. reported electrochemical approaches. The selectivity of the electrode response to rosmarinic acid is shown using a 1000-fold excess of inorganic ions, 100-fold excesses of saccharides, and 10-fold excesses of ascorbic and p-coumaric acids, eugenol, carvacrol, and thymol. Other phenolic acids (gallic, ferulic, caffeic) and flavonoids (quercetin, rutin) give an interference effect. Rosemary spices have been studied to prove the practical applicability of the MnO2 NRs-based electrode.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Modified electrodes	ru_RU
dc.subject	voltammetry	ru_RU
dc.subject	metal oxide nanomaterials	ru_RU
dc.subject	natural phenolics	ru_RU
dc.subject	rosmarinic acid	ru_RU
dc.title	An Electrode Based on Manganese Dioxide Nanorods and Hexadecylpyridinium Bromide for the Rosmarinic Acid Voltammetric Assay	ru_RU
dc.type	Статьи в зарубежных журналах и сборниках	ru_RU