Green and Selective Fluorescent Sensor for Detection of Sn (IV) and Mo (VI) Based on Boron and Nitrogen-Co-Doped...

A green and simple microwave-assisted method was used to synthesis water-soluble boron and nitrogen-co-doped carbon dots (B-N-CDs). These B-N-CDs were successfully used for the fluorescent determination of Sn⁴⁺ and Mo⁶⁺ ions. This probe had a fast response time at pH = 4 with high sensitivity and selectivity. Linear correlation between F₀/F and the concentration was seen in the range of 0.2-18 μM and 0.2-25 μM for Sn⁴⁺ and Mo⁶⁺, respectively. Under optimum condition, the limit of detection (LOD) for Sn⁴⁺ and Mo⁶⁺ were 150 nM and 132 nM, respectively. The performance of the sensor was evaluated by different real samples such as tap, river and mineral water, canned fish sample and tomato samples.