Interaction of Colloidal Silver Nanoparticles with Ni2+: Sensing Application
oleh: Federico Mochi, Iole Venditti, Ilaria Fratoddi, Chiara Battocchio, Laura Carlini, Giovanna Iucci, Mauro Casalboni, Fabio De Matteis, Stefano Casciardi, Paolo Prosposito
| Format: | Article |
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| Diterbitkan: | MDPI AG 2017-08-01 |
Deskripsi
We report on synthesis of silver nanoparticles (AgNPs) capped with specific thiol suitable to detect heavy metal ions in water. The sensing mechanism is based on a change of an optical properties of the silver colloids, namely the surface plasmon resonance (SPR) when small amounts of contaminants are present in solution. We detected a specific sensitivity to nickel ions and we investigated the interaction of the AgNPs with Ni2+ in the concentration range of 0.5–2.0 ppm.