Selective Sorbents Based on Silica Modified with 1,10-Phenanthroline Derivatives for FE(II) and FE(III) Ions

IF 0.9 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
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.

Abstract Image

1,10-邻菲罗啉衍生物改性二氧化硅对FE(II)和FE(III)离子的选择性吸附剂
通过在二氧化硅表面固定化1,10-菲罗啉衍生物,获得了一种新的金属离子萃取吸附剂,其吸附性能明显优于吸附固定化1,10-菲罗啉的类似物。制备的吸附剂在pH = 1.0时选择性去除Fe(II);而在pH >; 4时,则优先吸附Fe(III)。Fe(II)和Fe(III)离子在吸附剂表面的吸附动力学用拟二阶方程描述。所得吸附剂的Fe(II)离子分布系数可达104 ~ 105 cm3/g,可用于天然水体中存在大量组分的水溶液中Fe(II)离子的选择性去除,也可用于最大允许及以下环境和饮用水中Fe(II)和Fe(III)离子的测定。
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来源期刊
Theoretical and Experimental Chemistry
Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
30
审稿时长
6-12 weeks
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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