1 research outputs found
Ion-Solvation-Induced Molecular Reorganization in Liquid Water Probed by Resonant Inelastic Soft X‑ray Scattering
The molecular structure of liquid
water is susceptible to changes
upon admixture of salts due to ionic solvation, which provides the
basis of many chemical and biochemical processes. Here we demonstrate
how the local electronic structure of aqueous potassium chloride (KCl)
solutions can be studied by resonant inelastic soft X-ray scattering
(RIXS) to monitor the effects of the ion solvation on the hydrogen-bond
(HB) network of liquid water. Significant changes in the oxygen <i>K-edge</i> emission spectra are observed with increasing KCl
concentration. These changes can be attributed to modifications in
the proton dynamics, caused by a specific coordination structure around
the salt ions. Analysis of the spectator decay spectra reveals a spectral
signature that could be characteristic of this structure