Sol-Gel Synthesis of NiO Nanoparticles and Investigation on Adsorption Capacity in the Removal of Cr(VI) from Aqueous Solution

Abstract

In this study, the NiO nanoparticles were synthesized by sol-gel method, and their physicochemical properties were investigated through XRD, SEM-EDX, TEM, and BET-BJH. The TEM results showed that average nanoparticles size was smaller than 10 nm and that there was a good agreement between the TEM and XRD results. The results indicate that NiO nanoparticles are efficient adsorbent for the removal of Cr(VI) from aqueous solutions. The effects of adsorbent, adsorbate concentration, and pH were examined. The equilibrium data could be well described by Sips model. The results of adsorption kinetics study indicated that kinetics obeyed pseudo-second order kinetic model.

Developing an adaptive neuro‐fuzzy inference system based on particle swarm optimization model for forecasting Cr(VI) removal by NiO nanoparticles

“…In this investigation, removal % of Cr(VI) yields were collected from a previous article 1,21 to develop a novel ANFIS-PSO model. The range of experimental data is shown in Table 1.…”

Nanometric study of nickel oxide prepared by sol gel process

“…Hence it is required to develop new water treatment technologies in order to ensure a clean supply of drinking water and reduce water pollution. The objectives of the present study is synthesis and structural investigation of magnetic porous materials that could find applications in waste water treatment, removal of toxic materials from medical/industrial wastesand other such applications [2].…”