Fig. 2From: Synthesis of Pyridinic-Rich N, S Co-doped Carbon Quantum Dots as Effective Enzyme Mimics a The UV/vis of N, S-CQDs. b The PL of N, S-CQDs and the inset is the images of N, S-CQDs under ambient light and 365 nm irradiation. c The PL spectra of N, S-CQDs with different excitation wavelengths. d Photoluminescence intensity decay curves at the excitation light of 358 nmBack to article page