Mechanism of ion adsorption to aqueous interfaces: Graphene/water vs. air/water.

ABSTRACT: The adsorption of ions to aqueous interfaces is a phenomenon that profoundly influences vital processes in many areas of science, including biology, atmospheric chemistry, electrical energy storage, and water process engineering. Although classical electrostatics theory predicts that ions are repelled from water/hydrophobe (e.g., air/water) interfaces, both computer simulations and experiments have shown that chaotropic ions actually exhibit enhanced concentrations at the air/water interface. Although mechanistic pictures have been developed to explain this counterintuitive observation, their general applicability, particularly in the presence of material substrates, remains unclear. Here we investigate ion adsorption to the model interface formed by water and graphene. Deep UV second harm

SUBMITTER: McCaffrey DL 

PROVIDER: S-EPMC5754757 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature