Malva sylvestris mediated synthesis of CuO NPs towards electrochemical determination of quercetin

This study describes the green synthesis of copper oxide nanoparticles (Ms-CuO NPs) using Malva sylvestris extract as a reducing and capping agents. XRD, FT-IR, FE-SEM, and UV-Vis-DRS methods were used to evaluate the structural and morphological characteristics of Ms-CuO NPs. The XRD pattern indicates that the Ms-CuO NPs are in monoclinic crystalline phases with an average size of 16.28 nm. FE-SEM results revealed that the green synthesized Ms-CuO NPs had a spherical shape and an average particle size of 26 nm. Ms-CuO NPs were employed to modify the carbon paste electrode (Ms-CuO/CPE) in order to produce a sensitive electrochemical sensor for the detection and determination of Quercetin (QCT). Due to the high conductivity, exceptional catalytic ability, and large surface area of Ms-CuO, the QCT oxidation current response on Ms-CuO/CPE was four times greater than the CPE response in differential pulse voltammetry experiments. With a linear response range of 0.1-110 mu M, this electrochemical sensor demonstrates an excellent electrochemical response for QCT. The limit of detection and the limit of quantification for Ms-CuO/CPE were obtained at 1.14 and 3.96 mu M, respectively.

Automated summary

This study presents the green synthesis of copper oxide nanoparticles using Malva sylvestris extract. The Ms-CuO NPs exhibited monoclinic crystalline phases and had an average size of 16.28 nm. The Ms-CuO/CPE electrode modified with Ms-CuO NPs showed excellent electrochemical response for the detection of Quercetin.