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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Fluorescent Nano-Biomass Dots: Ultrasonic-Assisted Extraction and Their Application as Nanoprobe for Fe3+ detection

Fig. 3

a Fluorescence spectra of the NBDs with excitation wavelength changes from 320 to 520 nm. b UV-Vis absorption spectra of the NBDs. c Fluorescence spectra of the NBDs at different temperature, the inset is the plot of the fluorescence intensity of the NBDs as a function of temperature. d Fluorescence intensity and images of the NBD powders under the illumination of a 365-nm lamp for different duration and those of the NBD powders at different measuring temperature

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