Role of hydration energy and co-ions association on monovalent and divalent cations adsorption at mica-aqueous interface.

ABSTRACT: Adsorption of ions at the solid - aqueous interface is the primary mechanism in fast biological processes to very slow geological transformations. Despite, little is known about role of ion charge, hydration energy and hydration structure on competitive adsorption of ions, their structure and coverage at the interface. In this report, we investigate the structure and adsorption behavior of monovalent (Rb⁺ and Na⁺) and divalent (Sr²⁺ and Mg²⁺) cations ranging from 0-4.5 M of bulk concentrations on the muscovite mica surface. Divalent ions have stronger adsorption strength compared to monovalent ions due higher charge. However, we observed counter-intuitive behavior of lesser adsorption of divalent cations compared to monovalent cations. Our detail

SUBMITTER: Adapa S 

PROVIDER: S-EPMC6093886 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature