Functionalized Ni@SiO2 core/shell magnetic nanoparticles as a chemosensor and adsorbent for Cu2+ ion in drinkingwater and human blood

Abstract

Fluorogenic based nitrobenzofuran-functionalized Ni@SiO₂ core/shell magnetic nanoparticles have been prepared by sol–gel grafting reaction. Their ability to detect and remove metal ions was evaluated by fluorophotometry. The nanoparticles exhibited a high affinity and selectivity for Cu²⁺ over competing metal ions. Furthermore, the nanoparticles efficiently removed Cu²⁺ in drinking water and human blood.