One-Pot Sustainable Synthesis of Ce2S3/Gum Arabic Carbon Flower Nanocomposites for the Detection of Insecticide Imidacloprid

Investigating eco-friendly sustainable materials with excellent electrocatalytic activity is a pivotal approach for the analysis field. The present work reports on the preparation of novel three-dimensional (3D) cerium sulfide with gum arabic carbon flowers (Ce2S3/GACFs) via the hydrothermal method by using L-cysteine as a sulfur source, binding, and reducing agents. The intensive characterization techniques were utilized to corroborate the structural moiety, morphology, and size of Ce2S3/GACFs. The obtained 3D Ce2S3/GACFs construction endow excellent active sites, hence it prevents the accumulation of carbon flowers. Furthermore, the obtained Ce2S3/GACFs/glassy carbon electrode (GCE) could afford a very high electrocatalytic activity, possessing an exceedingly low detection limit of 32 nM, the high sensitivity of 2.65 µA µM-1 cm-2, good repeatability, and high stability for the detection of insecticide imidacloprid (IMC). The Ce2S3/GACFs/GCE also provides a wide linear range of 0.05-1266 µM toward IMC de...