Green synthesis of reduced graphene oxide nanosheets: An efficient material for electrochemical sensor and photocatalytic agent

Here in this report, Plumeria alba flower extracts (PAFE) were used as a green reducing agent for the synthesis of reduced graphene oxide (rGO), and the metamorphosis of rGO was characterized via Ultraviolet-Visible (UV-Vis), Fourier Transform Infrared Spectroscopy (FT-IR), and X-ray photoelectron spectroscopic (XPS). The results show that the 7.5rGO has the highest efficiency in electronic transmission for smaller Delta Ep facilitating a faster rate of electron transfer. As the differential pulse stripping voltammetry (DPSV) responses of 7.5rGO-modified glassy carbon electrode (GCE) to Cd(II) concentrations ranging from 0.0084 to 1.12 mg/L, demonstrating a linear correlation between the peak current and Cd(II) concentration. Meanwhile, under UV irradiation, 7.5rGO achieved a degradation rate of 65.62 % for the Methylene blue (MB) dye, with a degradation rate constant of 0.00827 min-1. This study establishes an environmentally friendly reduction method for the synthesis of rGO using plant extracts as reducing agents. The resulting rGO emerges as a powerful platform, poised to revolutionize the electrochemical determination of heavy metal ions and the degradation of organic dyes.