Figure 4
From: Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
(a) Fluorescence emission spectra of FL and rGO–FL showing red shift during formation of nanocomposite (b) Fluorescence titration spectra of rGO and FL in aqueous solution. The fluorescence emission was observed at 510 nm when the sample was excited at 348 nm and the increase in concentration of As(III) reduce the fluorescence intensity (c) Molecular model of rGO–FL nanoparticles interaction with As(III) simulated in vacuum using Gaussian Ver. 4.2.1 software; https://gaussian.com/utils.
