Synthesis and characterization of polyimidazolium species on silica nanoparticles: Study on cytotoxicity and removal of nitrate from water

Abstract

A nanocomposite containing imidazolium based on modified silica nanoparticles (polyimidazolium based on nano silica particles [PIZNS]) was prepared to remove nitrate from water. The prepared compounds were fully characterized by Fourier transform infrared, 1 H-NMR, field emission scanning electron microscopy, energy dispersive X-ray (EDX) and thermogravimetric analyzes. The ability of PIZNS in nitrate ions adsorption was tested under different operating conditions. The maximum removal efficiency and adsorption capacity (Q max ) of the PIZNS were obtained 90.56% and 37.73 mg g À1 , respectively (initial nitrate ion concentration of 50 mg/L, at pH = 7, 30 mg adsorbent, contact time of 30 min). To evaluate the selectivity