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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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 |
work_keys_str_mv |
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