2007/01/06 by А. М. Тихонов, Aleksey M. Tikhonov
Chemistry · Energy · Physics and Astronomy · #Adsorption #Analytical Chemistry (journal) #Anisotropy #Chemistry #Chromatography #Crystallography #Electrolyte #Electrostatics and Colloid Interactions #HYDROSOL #Ion #Iron oxide chemistry and applications #Isotropy #Materials science #Optics #Particle (ecology) #Physical chemistry #Physics #Sodium #Spectroscopy and Quantum Chemical Studies #cond-mat.mes-hall #cond-mat.soft
paper · pdf · doi:10.1063/1.2734542
published as J. Chem. Phys. 126(17), 171102 (2007) · 13 pages, 4 figures
arxiv created 2007/01/06 · openalex publication_date 2007/05/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The symmetry of the surface of an electrolyte solution can be anisotropic, regardless of the bulk's isotropic symmetry, because of spatial correlations between adsorbed ions. The author used x-ray grazing-incidence diffraction to measure the spatial correlations between sodium ions in "classical one-component plasma" adsorbed with Bjerrum's density at the surface of a monodispersed 22 nm particle colloidal silica solution stabilized by NaOH with a total bulk concentration approximately 0.05 mol/L. The authors findings show that the surface compact layer is in a two-dimensional crystalline state (symmetry p2), with four sodium ions forming the unit cell and a approximately 30 A translational correlation length between the ions.