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An Efficient and Highly Sensitive Amperometric Quercetin Sensor Based on a Lotus Flower Like SeO2-Decorated rGO Nanocomposite Modified Glassy Carbon Electrode

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Abstract

The present study involved to synthesize reduced grapheme oxide (rGO) nanocomposite–decorated lotus flower–like selenium dioxide (SeO2) nanomaterial by the sonochemical method, and it was utilized for electrochemical detection of quercetin (QR) (a flavonoid) in natural food sample, urine, and blood serum samples. The as-synthesized nanomaterial was characterized by XRD, FT-IR, Raman, BET, FE-SEM, EDX, and mapping analysis techniques. The SeO2/rGO nanocomposite modified on glassy carbon electrode (GCE) showed an excellent electrocatalytic activity towards the detection of QR as compared with other modified GCEs, and bare GCE. Moreover, the present electrochemical sensor was exhibited a superior current response for sensing of QR with wide linear ranges (from 0.01 to 200 µM), high sensitivity (71.023 µA µM−1 cm−2), and a lowest limit of detection (LOD) of 0.0016 µM. Besides, the fabricated SeO2/rGO nanocomposite–modified GCE was provided an excellent selectivity for QR in the presence of facile biological and inorganic interfering species. The fabricated SeO2/rGO-modified GCE was utilized for the determination of QR in various real samples, and the obtained data showed good recovery results.

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Acknowledgements

The author thanks the Post Graduate and Research Department of Chemistry, Post graduate and Research Department of Chemistry, Vivekananda College, Madurai 625234, Tamil Nadu, India, for providing laboratory facilities to carry out the present work.

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  1. Post Graduate and Research Department of Chemistry, Vivekananda College, Tamil Nadu, Madurai, 625234, India

    P. Karuppasamy

  2. Department of Chemistry, Latha Mathavan Arts and Science College, Tamil Nadu, Madurai, 625301, India

    A. Karthika

  3. College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, 314001, People’s Republic of China

    S. Senthilkumar

  4. Department of Chemistry, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Tamil Nadu, Coimbatore, 41020, India

    V. Rajapandian

  5. Department of Chemistry, Dayananda Sagar College of Engineering, Bangalore, Karnataka, 560078, India

    P. Karuppasamy

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Karuppasamy, P., Karthika, A., Senthilkumar, S. et al. An Efficient and Highly Sensitive Amperometric Quercetin Sensor Based on a Lotus Flower Like SeO2-Decorated rGO Nanocomposite Modified Glassy Carbon Electrode. Electrocatalysis 13, 269–282 (2022). https://doi.org/10.1007/s12678-022-00707-9

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