Cadmium sulfide quantum dots decorated reduced graphene oxide: A versatile platform for highly sensitive acetylacetone sensor

The intermixing of CdS QDs and graphene derivatives can provide a versatile platform for sensor materials. In this work, CdS QDs-reduced graphene oxide (rGO) composites were synthesized by low-temperature hydrothermal method and characterized through various techniques for morphological, structural, scattering, and optical properties. The prepared CdS QDs-rGO composites were applied as electroactive electrode for electrochemical detection of acetylacetone chemical. The sensitivity, linear dynamic range (LDR), and limit of detection (LOD) for fabricated CdS QDs-rGO/glassy carbon electrode (GCE) sensor were 43.6 μA μM⁻¹ cm⁻², 10–100 μM, and 15.4 μM, respectively. Thus, synthesized CdS QDs-rGO composites can be promising and reliable electron facilitators for the fabrication of sensitive, robust, and persistent electrochemical sensors. Graphical abstract: [Figure not available: see fulltext.].