Fig. 5From: Carbon Dots as an Effective Fluorescent Sensing Platform for Metal Ion Detectiona Schematic of the preparation of the full-color-emission CDs. b Fluorescence spectra of the fluorescent CDs (F-CDs) under different excitation wavelengths. c UV-vis absorption spectra of the F-CDs. d Fluorescence emission photographs of the F-CDs recorded from 330 to 600 nm in 30 nm increments. All spectra and photographs were obtained in deionized H2O [60]Back to article page