Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release

Assessment of the Surface Heterogeneity of Talc Materials

“…Then, at the equilibrium concentration (C e ) of 3 mM, the amount of adsorption ( ) on the untreated sample exhibits a sharp rise related to the precipitation of Me(SD) 2 . As the CMC is reached, the precipitate is solubilized in the micellar phase, resulting in a decreasing amount adsorbed (45). In contrast, in the same range of equilibrium concentration, the adsorption of SDS on the washed talc sample C slightly increases from 10.8 to 12 µmol g −1 .…”

Cobalt hydroxide colloidal particles precipitation on nanoclay layers for the formation of novel nanocomposites of carbon nanotubes/nanoclay

“…Additionally, the brucite ''islands'' formed initially can retard further diffusion of the basic monomers and small polymers. This mechanism has already been proven for other metal hydroxides, such as Al(OH) 3 , Fe(OH) 3 , and Cr(OH) 3 [12,14,17]. We believe that the above adsorption mechanism can also be applied in the present investigation.…”

“…In the catalytic area, clay mineral intercalated Ag nanoparticles [3,7], Cu nanoparticles [2], and titanium dioxide nanoparticles [8] have all been found to display improved photocatalytic properties. However, despite these researches, few works have been carried out in the association of metal hydroxide with clay [12][13][14][15][16][17].…”

Polyvinylpyrrolidone Adsorption on Na-Montmorillonite. Effect of the Polymer Interfacial Conformation on the Colloidal Behavior and Binding of Chemicals

“…Thus, the binding of SDS at the PVP-loaded montmorillonite can a priori be used to measure the adsorbed PVP extent at the sodium montmorillonite surface. Indeed, the interaction of SDS with the bare sodium montmorillonite is negligible (24,63) due to the electrostatic anion exclusion at the negatively charged basal plates (64) that make up at least 95% of the total surface area (14). Evidence for a SDS adsorption at the edge surface has only been provided by microelectrophoresis (24).…”