The current research presents the fabrication of zirconium oxide by using a precipitation method followed by
calcination at 400 oC for 2 h. The calcined powder was confirmed by different tools such as X-ray diffraction
(XRD), Fourier transform infrared spectra (FT-IR), Field emission scanning electron microscope (FE-SEM) and
transmission electron microscope (TEM). The XRD results revealed that the average crystallite size of the
fabricated zirconium oxide nanoparticles was 5 nm. FTIR spectra showed the peak at 450 cm-1 corresponding to
the crystalline ZrO2 nanoparticles. The effect of contact time, initial dye concentration, adsorbent dosage and pH
was studied. The adsorption data fitted the pseudo-first-order kinetic model. The adsorption followed Langmuir
adsorption isotherm model compared to the freundlich isotherm model. Thermodynamic parameters for the
adsorption system were showed that the adsorption process is spontaneous, physiorption and endothermic. The
prepared product has efficient adsorption performance to naphthol green B dye (NGB) with a maximum adsorption
capacity of 51.54 mg.g–1.