Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification

This article presents the results of the study on the effect of nanomagnetite modification on textural characteristics of clay matrices, adsorption properties, and parameters of the spent sorbents separation. The nitrogen adsorption-desorption method has shown that the obtained magnetic nanocomposit...

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Main Authors: Tetiana A. Dontsova, Elena I. Yanushevskaya, Svitlana V. Nahirniak, Oksana V. Makarchuk, Andrei I. Ivanets, Marina Yu Roshchina, Anastasiya S. Kutuzova, Leonid M. Kulikov
Format: Article
Language:English
Published: Hindawi Limited 2018-01-01
Series:Journal of Nanomaterials
Online Access:http://dx.doi.org/10.1155/2018/6573016
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spelling doaj-802b6d0132ae40f2ab2569953676ac132020-11-24T23:52:01ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292018-01-01201810.1155/2018/65730166573016Directional Control of the Structural Adsorption Properties of Clays by Magnetite ModificationTetiana A. Dontsova0Elena I. Yanushevskaya1Svitlana V. Nahirniak2Oksana V. Makarchuk3Andrei I. Ivanets4Marina Yu Roshchina5Anastasiya S. Kutuzova6Leonid M. Kulikov7Department of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Inorganic Substances, Water Purification and General Chemical Technology, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv 03056, UkraineDepartment of Fine Inorganic Synthesis, Thermodynamics and Kinetics of Heterophase Processes, Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv 03142, UkraineThis article presents the results of the study on the effect of nanomagnetite modification on textural characteristics of clay matrices, adsorption properties, and parameters of the spent sorbents separation. The nitrogen adsorption-desorption method has shown that the obtained magnetic nanocomposite sorbents have large specific surface areas (in 1.2–2 times more) than the initial clays due to the formation of the secondary porous structure on the surface and in macropores of clay matrices. The best adsorption properties with respect to dyes belong to magnetic sorbents with nanomagnetite content of 7 wt.%. The additional modification of the third phase of graphene-like molybdenum disulphide into magnetic sorbents leads to the significant increase in the sorption capacity of both cationic (up to 1100 mg/g) and anionic (up to 1830 mg/g) dyes. The conducted investigations of the total acidity and acid-base sites on the surface of clay, magnetite-modified clay, and molybdenum disulfide-modified magnetic sorbent indicate the significant influence of the Lewis base cites on the adsorption properties of these materials.http://dx.doi.org/10.1155/2018/6573016
collection DOAJ
language English
format Article
sources DOAJ
author Tetiana A. Dontsova
Elena I. Yanushevskaya
Svitlana V. Nahirniak
Oksana V. Makarchuk
Andrei I. Ivanets
Marina Yu Roshchina
Anastasiya S. Kutuzova
Leonid M. Kulikov
spellingShingle Tetiana A. Dontsova
Elena I. Yanushevskaya
Svitlana V. Nahirniak
Oksana V. Makarchuk
Andrei I. Ivanets
Marina Yu Roshchina
Anastasiya S. Kutuzova
Leonid M. Kulikov
Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification
Journal of Nanomaterials
author_facet Tetiana A. Dontsova
Elena I. Yanushevskaya
Svitlana V. Nahirniak
Oksana V. Makarchuk
Andrei I. Ivanets
Marina Yu Roshchina
Anastasiya S. Kutuzova
Leonid M. Kulikov
author_sort Tetiana A. Dontsova
title Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification
title_short Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification
title_full Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification
title_fullStr Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification
title_full_unstemmed Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification
title_sort directional control of the structural adsorption properties of clays by magnetite modification
publisher Hindawi Limited
series Journal of Nanomaterials
issn 1687-4110
1687-4129
publishDate 2018-01-01
description This article presents the results of the study on the effect of nanomagnetite modification on textural characteristics of clay matrices, adsorption properties, and parameters of the spent sorbents separation. The nitrogen adsorption-desorption method has shown that the obtained magnetic nanocomposite sorbents have large specific surface areas (in 1.2–2 times more) than the initial clays due to the formation of the secondary porous structure on the surface and in macropores of clay matrices. The best adsorption properties with respect to dyes belong to magnetic sorbents with nanomagnetite content of 7 wt.%. The additional modification of the third phase of graphene-like molybdenum disulphide into magnetic sorbents leads to the significant increase in the sorption capacity of both cationic (up to 1100 mg/g) and anionic (up to 1830 mg/g) dyes. The conducted investigations of the total acidity and acid-base sites on the surface of clay, magnetite-modified clay, and molybdenum disulfide-modified magnetic sorbent indicate the significant influence of the Lewis base cites on the adsorption properties of these materials.
url http://dx.doi.org/10.1155/2018/6573016
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