Nanomolar sensitive colorimetric assay for Mn2+ using cysteic acid-capped silver nanoparticles and theoretical investigation of its sensing mechanism.


A new facile, rapid, sensitive and selective colorimetric assay is proposed for the determination of manganese ions (Mn2+) utilizing cysteic acid (CA)-capped silver nanoparticles (CA-AgNPs) as colorimetric probes. The CA-AgNPs were prepared by reducing AgNO3 with NaBH4 in the presence of CA as the capping ligand. The presence of Mn2+ induces the quick… (More)
DOI: 10.1016/j.aca.2017.05.018