Effect of Hydrothermal Reaction Temperature on Fluorescent Properties of Carbon Quantum Dots Synthesized from Lemon Juice for Adsorption Applications

Figure 5

CQDs illuminated by (a) UV light at the wavelength of 254 nm and emit blue color, (b) UV light at the wavelength of 365 nm and emit green color, and (c) excitation with visible color emit dark brown (600 nm). It means that as excitation wavelength increasing the emission wavelength shift to higher wavelength.