In all cases, the presence of small quantities of structural charge in 2:1 clay minerals had a significant effect on surface charge properties; e.g., for all soils, p.z.n.c. < p.z.n.p.c. These characteristics of
Surface charge heterogeneity of kaolinite in aqueous suspension in comparison with montmorillonitekaoliniteph-dependent chargesaggregationcoagulation kineticsdynamic light scatteringrheologyAn analogous study to 2:1 type montmorillonite [Tombácz, E., Szekeres, M., 2004. Colloidal behavior of aqueous ...
Eight soil pedons, representing the alluvial and the colluvial deposits, were described, and their mineralogical and physicochemical properties were examined. The common clay minerals in the studied area are smectite, palygorskite, kaolinite, chlorite, and illite. The point of zero charge ( pH 0 )...
Rocks, rock debris, and grains are usually coated with X-ray amorphous layers formed by the following mechanisms: (1) Incongruent dissolution of rock material; (2) sorption of inorganic and organic species mainly from solutions and suspensions, but also from the atmosphere; (3) thermal diffusion...
Adsorption of Cu on kaolinite could be described using a simple 1-site DLM with formation of a monodentate Cu complex on a variable charge surface site. However, for consistency with models derived for weaker sorbing cations, a 2-site DLM with a variable charge and a permanent charge site ...
II. Changes in surface properties of clays after addition of iron(III) Adsorption of iron(III) resulted in a partial reduction of negative charge in clays. The reduction of negative charge in kaolinite and illite was close ... P Rengasamy,JM Oades - 《Soil Research》 被引量: 206发表: ...
Interfacial synthesis of layer-oriented 2D conjugated metal–organic framework films toward directional charge transport. J. Am. Chem. Soc. 143, 13624–13632 (2021). Article CAS PubMed Google Scholar Dong, R. et al. Large-area, free-standing, two-dimensional supramolecular polymer single-layer...
The basal planes and edges of kaolinite have different surface structures and surface charges. The basal planes are generally believed to carry a constant negative charge, due to the isomorphous substitution of Al3+ ions for Si4+ in the silica tetrahedral layer and of Mg2+ or other divalent ...
In particular, the protective layer shall provide effective protection against the photocatalytic activity of the pigment induced by ultraviolet rays without influencing the optical properties of the pigment. In addition, the pigments shall have excellent weathering stability and suppress yellowing in ...
Adsorption of polyacrylamide to Na kaolinite: correlation between clay structure and surface properties. J. Colloid Interface Sci., 106: 94- 103.ADSORPTION OF POLYACRYLAMIDE TO Na KAOLINITE: CORRELATION BETWEEN CLAY STRUCTURE AND SURFACE PROPERTIES. Pefferkorn, E.,Nabzar, L.,Carroy, A. Journal ...