Silver nanoparticle decorated γ-cyclodextrin with 1,5-dihydroxy naphthalene inclusion complex; as a sensitive fluorescence probe for dual metal ion sensing employing spectrum techniques

[Display omitted] •Dual metal ions can be detected using silver nanoparticles coated γ-cyclodextrin with 1,5-dihydroxy naphthalene.•UV and fluorometric approaches in calorimetric and fluorometric spectroscopy.•Physicochemical properties using FT-IR and XPS analyses, whereas morphology using TEM data.•The Ag-D-γ-CD/DHNinclusion complex could be a feasible FP for sensing dual metals Cu2+ and Hg2+. It's worth noting that the inclusion complex has prepared that of γ-cyclodextrin and 1,5-dihydroxy naphthalene. And it's decorated with a silver nanoparticle fluorescent probe developed for metal ion detection. The prepared fluorescent probe's purpose was for sensing here that dual metal. Nevertheless, that has previously has been verifying by essential analytical characterizations. Interestingly the Fourier transforms infrared spectroscopy (FT-IR) and Ultraviolet (UV) spectroscopy method, and their respective spectra importantly helped for the γ-Cyclodextrin (γ-CD) and silver nanoparticle decorated γ-cyclodextrin (Ag-D-γ-CD). By the FT-IR, in particular γ-CD respective O-H (3431 cm−1), C = C (1632 cm−1), C = O (1563 cm−1) vibrations peaks have been noticed. The silver nanoparticles decorated material; Ag-D-γ-CD is displaced to 3443 cm−1, this type of FT-IR wavenumber strongly confirmed Ag is decorating in the rim of γ-CD. UV–Vis spectra have highly supported identifying the formation of nanoparticles shows a peak of nearly 410 nm. The Transmission Electron Microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) results are highly needed to support this material. The X-ray photoelectron spectroscopy is exhibiting the results, and it is dominating elements and the chemical valence states. The prepared fluorescent probe has detected metal ions, specially Cu2+ and Hg2+ dual metals. Finally, the representative; real sample analysis was investigated, with tap and pond water gathered from the Alagappa University neighborhood.