A novel Synthesis of fluorescent nanoprobe for high-efficiency detection of Cu²⁺ in water

This paper mainly studies the preparation of nitrogen-doped carbon nanoparticles (N-CNPs), which are used as fluorescent probes for the detection of copper ions (Cu 2+ ) in actual environmental water samples. The novel synthesis method is simple, fast, efficient, low-cost, and environmentally friendly, enabling effective detection of pollutants in environmental water samples. The fluorescence intensity of the N-CNPs can be selectively quenched by Cu 2+ . The experimental results show that the N-CNPs exhibit a good linear relationship with Cu 2+ concentration and demonstrate high selectivity. The N-CNPs have been used to detect the Cu 2+ concentration of the environmental water samples, and the recovery rate of standard addition is about 100%.