hydrothermal conditions, with a plant of Jinhua bergamot as a carbon source. The as-
synthesized C-dots have better stability and relatively high photoluminescence with a
quantum yield of 50.78%, along with the fluorescence lifetime of ca. 3.84 ns. Their
photoluminescence can be significantly quenched by simply using the buffer solution of
HAC–NaAC for Hg 2+ and Tris–HCl for Fe 3+. Based on this, we explored for selective …