The goal of this study is to investigate the pH influence on the adsorption of cellulose derivatives of different chemical nature (cationic cellulose—AHCE; nonionic hydroxyethyl cellulose, and anionic carboxymethyl cellulose) on the surface of the natural adsorbent bentonite–nanoclay N-HB. The obtained results have the potential in water purification and in the production of stable colloidal suspensions in cosmetics

The goal of this study is to answer the question of how pH influences the adsorption behavior of cellulose derivatives with different chemical natures (cationic cellulose–AHCE; nonionic hydroxyethyl cellulose, and anionic carboxymethyl cellulose) on the surface of the natural adsorbent bentonite–nanoclay N-HB. The diversity of polysaccharide adsorption is investigated, the mechanisms of this process are determined, and the adsorption layer structure as well as the stability of the systems are characterized. The studies are carried out by UV–vis spectrophotometry, Fourier transform infrared, X-ray diffraction, scanning electron microscopy-electron dispersive spectroscopy, X-ray photoelectron spectroscopy, zeta potential, and thermogravimetric analysis. Apart from the cognitive element, the results obtained have the potential to find practical applications in water purification and in the production of stable colloidal suspensions in cosmetics.