Thermodynamic study of the adsorption of acridinium derivatives on the clay surface.

ABSTRACT: In this study, the adsorption behavior of mono-cationic acridinium derivatives on a synthetic clay mineral (Sumecton SA) was investigated. The acridinium derivatives were adsorbed on the clay surface without aggregation, as found from the changes in the absorption spectra of the acridinium derivatives with SSA and without SSA represented by two-component equilibrium systems of adsorbed and non-adsorbed components. Following the Langmuir isotherm analysis, the adsorption equilibrium constants and maximum adsorption amounts were determined for acridinium derivatives, and the Gibbs free energy change (ΔG) was calculated to be in the range of -33.8 to 40.0 kJ mol^-1 from the adsorption equilibrium constants. These results indicated that the adsorption of acridinium derivatives

SUBMITTER: Yoshida Y 

PROVIDER: S-EPMC9054366 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature