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Abstract Negatively charged liposomes prepared by solvent evaporation method were characterized by transmission electron microscopy, Raman spectroscopy and differential scanning calorimetry. The adsorption of Ni(II), Cd(II) and Hg(II) on the… Click to show full abstract
Abstract Negatively charged liposomes prepared by solvent evaporation method were characterized by transmission electron microscopy, Raman spectroscopy and differential scanning calorimetry. The adsorption of Ni(II), Cd(II) and Hg(II) on the liposomes was systematically investigated. Special attention was paid to the effect of pH, ionic strength and the particle size of liposomes on the adsorption behavior. The increase of pH (from 6.5 to 8.1) enhanced the adsorption capacity (Qe) of three metals due to its effect on metal ions speciation and the conformation of polar phosphatidyl groups (active sites) on the liposome surfaces. The presence of ions slightly weakened the Qe of Ni(II) (p > 0.05) and Cd(II) (p
Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Year Published: 2018
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