The inactivation of fecal coliform using Fe3O4@Cu nanocomposite in real wastewater: emphasizing on synergic effect and inactivation mechanisms

Fe3O4@SiO2 magnetic nanocomposites as adsorbents for removal of diazinon from aqueous solution: isotherm and kinetic study

“…As seen in Figure 4 at the initial stages the adsorption process increased rapidly. This could be due to greater available adsorption sites at the beginning of the process (Moradi et al , 2018; Mohseni-Bandpei et al , 2015).…”

“…The Fe 3 O 4 nanoparticles (2.0 g) were re dispersed in a mixture of aqueous ammonia (2.4 mL), ethanol (80.0 mL) and deionized water (40.0 mL). Then, for preparation of Fe 3 O 4 @SiO 2 nanocomposites, 1.0 mL of tetraethyl orthosilicate (TEOS) was added dropwise to the suspension and the mixture was sonicated for 12 h. Finally, the obtained Fe 3 O 4 @SiO 2 nanocomposites were isolated by magnetic separation and were washed with ethanol three times and then dried at 65°C for 12 h (Zhu et al , 2010; Firouzabadi et al , 2017; Moradi et al , 2018). Finally, the structural and morphological properties of adsorbent nanocomposites were studied using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).…”