Novel approach for green synthesis of Cu-NPs using Centella asiatica leaf extract, assisted by BiFeO3 nanoparticles for electrochemical glucose- and fructose-sensing applications

Abstract

This research explored the structural, optical, morphological, and electrochemical properties of the green-synthesized copper metal nanoparticles using Centella asiatica leaf extract and assisted by perovskite-structured bismuth ferrite nanomaterial (Cu/BFO NPs, namely CBO NPs). The structural confirmation of the synthesized CBO NPs was done by X-ray diffraction method, through which the crystallite size was determined to be 52 nm, derived through the Debye–Scherrer equation. The optical absorption band was presented at around 271 and 690 nm. A high-resolution scanning electron microscope revealed the spherical morphology of the synthesized CBO NPs. The electrochemical sugar-sensing activities of CBO NPs and the anti-interference study were performed through cyclic voltammetry and chronoamperometry techniques, respectively. The sensitivity value of the CBO NPs for glucose sugar was found to be 425 μA mM−1 cm−2. The synthesized CBO NPs were suitable for glucose sugar sensor applications.