▎ 摘　　要

This work reports a simple and fast aqueous preparation of CuInS2/ZnS-graphene oxide (CIS/ZnS-GO) nanocomposite as a fluorescence "switch OFF" probe for the fluorescence detection of 2, 4, 6-trinitrophenol (TNP.) - a raw material for various explosive devices. The as-synthesized nanocomposites was characterised using Ultraviolet-visible (UV-Vis) spectroscopy, photoluminescence (PL) spectroscopy, high resolution transmission electron microscopy (HR-TEM), Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and Raman scattering. The PL studies revealed that the adsorption of TNP onto GO via pi-pi stacking enhanced the charges transfer from CuInS2/ZnS-GO to the analyte. The limit of detection (LOD) for the analyte is 57 mu M. (C) 2020 Elsevier B.V. All rights reserved.