V. Ya. Chernii, V. Ya. Demchenko, N. G. Kobylinska
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引用次数: 0
Abstract
A new sorbent for the extraction of metal ions has been obtained by immobilization of 1,10-phenanthroline derivatives on the silica surface, which significantly exceeds analogues obtained by adsorption immobilization of 1,10-phenanthroline on the surface in terms of sorption properties. The developed sorbent selectively removes Fe(II) at pH = 1.0; at pH > 4, on the contrary, preferentially adsorbs Fe(III). The sorption kinetic of Fe(II) and Fe(III) ions is described by a pseudo-second-order equation corresponding to their chemisorption on the sorbent surface. The distribution coefficients of Fe(II) ions on the obtained sorbent reach to 104-105 cm3/g, which reveal the prospects of its using for the selective removal of Fe(II) ions from aqueous solutions in the presence of macrocomponents of natural waters, as well as for the determination of Fe(II) and Fe(III) ions in environmental and drinking waters at the maximum permissible level and below.
期刊介绍：
Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as:
a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials;
b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions;
c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.
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