Adsorption of Polyethyleneglycol at the Mercury/Solution Interface

Adsorption of anionic surfactant at the electrode–NaClO4 solution interface

ABSTRACT Adsorption of 1-decanesulfonic acid at the electrode-NaClO4 solution interface was determined by double-layer differential capacity measurements. At potentials less than -1,200 mV, the adsorption of the anionic surfactant on the electrode does not occur. Low concentrations of the anionic surfactant (below cmc) causes slight changes in the zero charge potential, Ez, and the surface tens...

Thermodynamics of adsorption at the aqueous-air interface.

A thermodynamic model is presented for the aqueous-air interface. For common organic solutes a relationship between the activity coefficients in the bulk solution and on the surface layer is deduced by using the concept of a surface monolayer. This relation has enabled development of an equation expressing the air-water surface adsorption coefficient as a function of bulk activity coefficients,...

Refraction at the Interface of a Lossy Metamaterial

The refraction phenomenon at the interface of an ordinary material and a lossy metamaterial has been investigated. For oblique incidence on the lossy metamaterial, the planes of constant amplitude of the refracted wave are parallel to the interface and the plane of constant phases make a real angle with the interface (real refraction angle). The real refraction angle and hence, the real refract...

Arsenate adsorption mechanisms at the allophane-water interface.

We investigated arsenate (As(V)) reactivity and surface speciation on amorphous aluminosilicate mineral (synthetic allophane) surfaces using batch adsorption experiments, powder X-ray diffraction (XRD), and X-ray absorption spectroscopy (XAS). The adsorption isotherm experiments indicated that As(V) uptake increased with increasing [As-(V)]0 from 50 to 1000 microM (i.e., Langmuir type adsorptio...

Supercritical Fluid Adsorption at the Gas-Solid Interface