فهرست نشریات علمی دسترسی آزاد ایران

In our current research, Soot–Poly(O-Toluidine) nanocomposite (St–POT) were prepared from soot and o-toluidine via in situ oxidative polymerization under ultrasound field. Then, the surface properties of the nanocomposite, such as roughness and surface area, were improved using acid treatment with nitric acid. AFM and BET techniques supported this matter, as the surface area and roughness of the Soot–Poly(O-Toluidine) nanocomposite treated with nitric acid (St–POT@Ac) increased. Other techniques were also used to characterize the prepared nanocomposite, such as FT-IR, XRD, and FE-SEM. We have conducted a number of experiments and studies to reach the optimal conditions for removing crystal violet dye (CV), where the removal rate reached 99.1% at a time of 40 minutes and adsorbent weight of 0.1g at 25°C. Thermodynamic study indicated that the adsorption process is physisorption, exothermic, and spontaneous. The adsorption isotherm was fitted to the Freundlich equation, while the kinetic isotherm was fitted to the pseudo-second order equation.