Determination of absorption characteristics of aqueous solutions containing endofullerenoles, in relation to organic compounds
Abstract
Along with solid sorbent materials, in some cases there is a significant need for effective liquid absorbers. Such materials are needed to solve the environmental problems associated with excess of maximum permissible concentrations of toxic compounds in natural waters used on different industry, medicine and so on. This problem became the impetus for the search for new liquid absorbers, the absorption properties of which can vary widely, the introduction in their composition various modifiers.
One of these modifiers is a new allotropic form of carbon – fullerene. Along with fullerenes, endohedral metallofullerenes – fullerene compounds containing one or more metal atoms inside their carbon framework, as well as fullerenols (fullerols) – hydrophilic water-soluble fullerene derivatives containing up to 26 groups of OH, as well as oxygen bridges-are currently obtained. One of the promising areas of application of fullerenes and their derivatives is the modification of materials, including sorption-active ones, by introducing micro-quantities of fullerenes into their composition in order to increase sorption activity. The authors of this paper suggested that the water introduced fullerene is able to change its properties with increasing absorption capacity. In the presented work studied the possibility of using to enhance the absorption properties of water in relation to organic compounds, endofullerenes is a water – soluble modifications of fullerene introduced endohedrally in the field of fullerene atom of iron. Investigated absorption capacity of aqueous solutions endofullerenes Fe@C60(OH)26 with concentrations of 0.1 and 0.4 mg/dm3 in relation to organic solvents. Benzene and o-xylene were used as organic solvents. Content analysis endofullerenes and organic solvents in water was carried out spectrophotometrically. Sorption characteristics of water in the introduction to her endofullerenes in the amount of 0.1 and 0.4 mg/dm3, increased relative to the benzene and o-xylene, in some cases, more than 1.5 times.
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