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ABSTRACT In this work, we have successfully developed novel silver nanoconjugates of pyrazolone analogue and screened its chemosensing potential in aqueous medium. Bispyrazolone silver nanoparticles (Bispyra-AgNPs) were synthesised and characterised… Click to show full abstract
ABSTRACT In this work, we have successfully developed novel silver nanoconjugates of pyrazolone analogue and screened its chemosensing potential in aqueous medium. Bispyrazolone silver nanoparticles (Bispyra-AgNPs) were synthesised and characterised through FTIR, UV-visible spectroscopy and atomic force microscopy. The sensing ability was explored towards Ca2+, Cd2+, Co2+, Cu2+, Fe2+, Li+, Pb2+, La3+, Hg2+, Mg2+, Ni2+ and Ba2+ metal ions, respectively. Bispyra-AgNPs showed a highly quenching potential in selective recognition of Cu2+and colour of the solution immediately turned from yellow to purple, after the addition of Cu2+ in to the solution. The developed method also displayed a remarkable selectivity for Cu2+ over others interfering metal ions. The binding ratio and stoichiometry of host-guest complex was found to be 1:1 and determined by Job’s method. The propose method is facile and sensitive to detect Cu2+ with detection limit of 10 µM.
Journal Title: International Journal of Environmental Analytical Chemistry
Year Published: 2018
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