Probing the Mineral-Water Interface with Nonlinear Optical Spectroscopy.

ABSTRACT: The interaction between minerals and water is manifold and complex: the mineral surface can be (de)protonated by water, thereby changing its charge; mineral ions dissolved into the aqueous phase screen the surface charges. Both factors affect the interaction with water. Intrinsically molecular-level processes and interactions govern macroscopic phenomena, such as flow-induced dissolution, wetting, and charging. This realization is increasingly prompting molecular-level studies of mineral-water interfaces. Here, we provide an overview of recent developments in surface-specific nonlinear spectroscopy techniques such as sum frequency and second harmonic generation (SFG/SHG), which can provide information about the molecular arrangement of the first few layers of water molecules at the mineral

SUBMITTER: Backus EHG 

PROVIDER: S-EPMC8247323 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature