Anion-driven selective colorimetric detection of Hg2+ and Fe3+ using functionalized silver nanoparticles

作者：Bothra Shilpa; Solanki Jignasa N; Sahoo Suban K^*; Callan John F

来源：RSC Advances, 2014, 4(3): 1341-1346.

DOI：10.1039/c3ra44945a

A novel nanosensing system was developed by the surface functionalization of silver nanoparticles (AgNPs) with beta-alanine dithiocarbamate (ADTC) for the selective recognition and monitoring of Hg2+ and Fe3+ ions in aqueous medium. This system showed a visually detectable colour change from yellow to colourless and the surface plasmon resonance (SPR) band of AgNPs at 402 nm disappeared with the addition of both Hg2+ and Fe3+ ions due to the aggregation of nanoparticles. Interestingly, the functionalized AgNPs can be applied for the discrimination and selective detection of Hg2+ and Fe3+ in the presence of Br- and Cl-, respectively.

• 出版日期2014