KFU. Card publication. 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

Form of presentation

Articles in international journals and collections

Year of publication

2023

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Authors, employees of KFU

Ziyatdinova Guzel Kamilevna, author

Bibliographic description in the original language

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.

Annotation

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.

Keywords

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

The name of the journal

Engineering Proceedings

URL

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

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=297463&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Ziyatdinova Guzel Kamilevna	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/eng/?p_id=297463&p_lang=2	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	Articles in international journals and collections	ru_RU