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ABSTRACT
In this study polyimide nanocomposites containing cerium oxide were prepared through sol-gel method. Morphology of the particles was investigated using scanning electron microscopy (SEM) and the average size of the composite particles was obtained as 41 nm. Structural characteristics of the nanocomposites were investigated using X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. These nanocomposites were used as an adsorbent for removal of the malachite green (MG) as pollutant. During investigating the activity of the dosage of adsorbent polyimide nanocomposite containing cerium oxide, time, pH and concentration of the pollutant were studied and the results demonstrated the high activity of the prepared nanocomposites as adsorbent. The highest removal percentage is obtained at pH = 5, and the optimum dosage of the nanocomposite so as to removal of malachite green was chosen as 0.7 g.