Microcantilevers with surface functionalizations recently have provided the possibilities, of chemimechnanical transductions for sensing applications. In this study, the 18-crown-6 was grafted onto the carboxyl-microcantilever as surface functionalization for Pb2+ detection. Microcantilever with 18-crown-6 functionalization exhibited the surface configurations of adequate wetting property, strong covalent immobilization and selective Pb2+ adsorption. Experimental results revealed that the 18-crown-6 functionalized microcantilever exhibited the excellent Pb2+ sensing performances with a high sensitivity of 42.1 nm/log[Pb2+], a low detection limit as well as a wide detectable regime ranging from 10-7 to 10-61 M.
- Pb poisoning detection