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首页> 外文期刊>Electrocatalysis >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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An Efficient and Highly Sensitive Amperometric Quercetin Sensor Based on a Lotus Flower Like SeO2-Decorated rGO Nanocomposite Modified Glassy Carbon Electrode

机译：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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摘要

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 mu M), high sensitivity (71.023 mu A mu M-1 cm(-2)), and a lowest limit of detection (LOD) of 0.0016 mu M. 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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