sorption of cerium by the pani / cnt composition from sulfuric chloride solution

The purpose of the work is to study the sorption characteristics of a composite material based on carbon nanotubes and polyaniline (pani/cnt) during the extraction of cerium from sulfuric chloride solutions. the sorption characteristics of a composite material based on carbon nanotubes and polyaniline (pani/cnt) during the extraction of cerium from sulfuric chloride acid solutions are investigated. nanocomposite polyaniline (60 wt.%)/cnt was prepared by oxidative polymerization of aniline on the cnt surface. morphological and structural characteristics of the material were obtained using scanning electron microscopy.using the pani/cnt nanocomposite, a isotherm of cerium adsorption was obtained from aqueous solutions of the above composition, which has a linear character and can be described by the henry equation.the kinetic constants obtained by processing the data on pseudo-first and pseudo-second order models and the elovich model indicate that the kinetics of cerium adsorption on the pani / cnt nanocomposite with a higher value of the correlation coefficient is described using a pseudo-second order model. moreover, it was found that the equilibrium sorption time was 30 min, and the adsorption capacity of the sorbent was 15 mg g^-1. data processing using kinetic models showed that absorption occurs due to the chemical interaction of cerium and the functional groups of the nanocomposite. as a consequence, it can be assumed that the chemical interaction with surface functional groups-carboxylic, phenolic, etc. – contributes to the adsorption mechanism of cerium by the pani-cnt nanocomposite.