МАГНЕТИТ С МОДИФИЦИРОВАННОЙ ПОВЕРХНОСТЬЮ ДЛЯ ВОДООЧИСТКИ

Translated title of the contribution: Magnetite with modified surface for water treatment

Research output: Contribution to journalArticle

Abstract

Relevance. Recently, interest in the synthesis of magnetite nanoparticles has been growing, which is due to the possibility of using it as a sorbent for protecting environment, such as, for purifying wastewater from organic compounds, drugs and inorganic heavy metals. The necessity to improve the efficiency of sorption and study mechanism of sorption makes this problem urgent. The main aim of the research is to determine the sorption possibility of inorganic and organic ions, as well as drugs on magnetite powders with a modified surface obtained by a chemical method for further use in water purification. Object: magnetic nanopowders based on FFe3O4 with modified surface with citrate ions and dioxide silica. Methods: Xray phase analysis, inductively coupled plasma atomic emission spectrometry, method of thermal desorption of nitrogen, indicator method. Results. Magnetic powders based on magnetite Fe3O4 with a surface coated with сitrate ions (MNP) and silicon dioxide (MNP/SiO2) were obtained for sorption of organic and inorganic compounds from aqueous media. Their composition and magnetic properties were studied. It is shown that the obtained composition of magnetite coated with dioxide silica corresponds to the crystalline phase of Fe3O4 and amorphous phase of SiO2. Furthermore, the saturation magnetization Ms and average surface diameter of particles were determined. The sorption isotherms of organic and inorganic compounds on the surface of obtained nanopowders were described by the Langmuir equation, which indicates the formation of a monomolecular layer on the surface of the sorbents. The maximum sorption capacity of Ni2+, methylene blue and doxorubicin on silicon dioxidecoated magnetite powders was determined, it is 22,3, 14,7 and 18,8 mg/g, respectively. The charge of surface active centers of the magnetite was determined by the indicator method. The obtained results make it possible to simulate sorption of organic, inorganic substances and drugs in water purification and utilization of chemical compounds in pharmaceutical plants and cancer centers.

Original languageRussian
Pages (from-to)163-172
Number of pages10
JournalBulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Volume330
Issue number8
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Ferrosoferric Oxide
Magnetite
Water treatment
Sorption
magnetite
water treatment
sorption
drug
Organic compounds
Silicon Dioxide
Powders
Inorganic compounds
organic compound
inorganic compound
Silica
Ions
Sorbents
silicon
Purification
ion

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology
  • Waste Management and Disposal
  • Economic Geology
  • Management, Monitoring, Policy and Law

Cite this

@article{3be3f1a0449748d8a7f6bd942ee3fa7b,
title = "МАГНЕТИТ С МОДИФИЦИРОВАННОЙ ПОВЕРХНОСТЬЮ ДЛЯ ВОДООЧИСТКИ",
abstract = "Relevance. Recently, interest in the synthesis of magnetite nanoparticles has been growing, which is due to the possibility of using it as a sorbent for protecting environment, such as, for purifying wastewater from organic compounds, drugs and inorganic heavy metals. The necessity to improve the efficiency of sorption and study mechanism of sorption makes this problem urgent. The main aim of the research is to determine the sorption possibility of inorganic and organic ions, as well as drugs on magnetite powders with a modified surface obtained by a chemical method for further use in water purification. Object: magnetic nanopowders based on FFe3O4 with modified surface with citrate ions and dioxide silica. Methods: Xray phase analysis, inductively coupled plasma atomic emission spectrometry, method of thermal desorption of nitrogen, indicator method. Results. Magnetic powders based on magnetite Fe3O4 with a surface coated with сitrate ions (MNP) and silicon dioxide (MNP/SiO2) were obtained for sorption of organic and inorganic compounds from aqueous media. Their composition and magnetic properties were studied. It is shown that the obtained composition of magnetite coated with dioxide silica corresponds to the crystalline phase of Fe3O4 and amorphous phase of SiO2. Furthermore, the saturation magnetization Ms and average surface diameter of particles were determined. The sorption isotherms of organic and inorganic compounds on the surface of obtained nanopowders were described by the Langmuir equation, which indicates the formation of a monomolecular layer on the surface of the sorbents. The maximum sorption capacity of Ni2+, methylene blue and doxorubicin on silicon dioxidecoated magnetite powders was determined, it is 22,3, 14,7 and 18,8 mg/g, respectively. The charge of surface active centers of the magnetite was determined by the indicator method. The obtained results make it possible to simulate sorption of organic, inorganic substances and drugs in water purification and utilization of chemical compounds in pharmaceutical plants and cancer centers.",
keywords = "Adsorption, Charge of surface active centers, Magnetic nanoparticles, Organic and non;organic ions, Surface modification",
author = "Tuan, {Hoang Tran} and Yurmazova, {Tatyana A.} and Vaitulevich, {Elena A.}",
year = "2019",
month = "1",
day = "1",
doi = "10.18799/24131830/2019/8/2222",
language = "Русский",
volume = "330",
pages = "163--172",
journal = "Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering",
issn = "2500-1019",
publisher = "Tomsk Polytechnic University",
number = "8",

}

TY - JOUR

T1 - МАГНЕТИТ С МОДИФИЦИРОВАННОЙ ПОВЕРХНОСТЬЮ ДЛЯ ВОДООЧИСТКИ

AU - Tuan, Hoang Tran

AU - Yurmazova, Tatyana A.

AU - Vaitulevich, Elena A.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Relevance. Recently, interest in the synthesis of magnetite nanoparticles has been growing, which is due to the possibility of using it as a sorbent for protecting environment, such as, for purifying wastewater from organic compounds, drugs and inorganic heavy metals. The necessity to improve the efficiency of sorption and study mechanism of sorption makes this problem urgent. The main aim of the research is to determine the sorption possibility of inorganic and organic ions, as well as drugs on magnetite powders with a modified surface obtained by a chemical method for further use in water purification. Object: magnetic nanopowders based on FFe3O4 with modified surface with citrate ions and dioxide silica. Methods: Xray phase analysis, inductively coupled plasma atomic emission spectrometry, method of thermal desorption of nitrogen, indicator method. Results. Magnetic powders based on magnetite Fe3O4 with a surface coated with сitrate ions (MNP) and silicon dioxide (MNP/SiO2) were obtained for sorption of organic and inorganic compounds from aqueous media. Their composition and magnetic properties were studied. It is shown that the obtained composition of magnetite coated with dioxide silica corresponds to the crystalline phase of Fe3O4 and amorphous phase of SiO2. Furthermore, the saturation magnetization Ms and average surface diameter of particles were determined. The sorption isotherms of organic and inorganic compounds on the surface of obtained nanopowders were described by the Langmuir equation, which indicates the formation of a monomolecular layer on the surface of the sorbents. The maximum sorption capacity of Ni2+, methylene blue and doxorubicin on silicon dioxidecoated magnetite powders was determined, it is 22,3, 14,7 and 18,8 mg/g, respectively. The charge of surface active centers of the magnetite was determined by the indicator method. The obtained results make it possible to simulate sorption of organic, inorganic substances and drugs in water purification and utilization of chemical compounds in pharmaceutical plants and cancer centers.

AB - Relevance. Recently, interest in the synthesis of magnetite nanoparticles has been growing, which is due to the possibility of using it as a sorbent for protecting environment, such as, for purifying wastewater from organic compounds, drugs and inorganic heavy metals. The necessity to improve the efficiency of sorption and study mechanism of sorption makes this problem urgent. The main aim of the research is to determine the sorption possibility of inorganic and organic ions, as well as drugs on magnetite powders with a modified surface obtained by a chemical method for further use in water purification. Object: magnetic nanopowders based on FFe3O4 with modified surface with citrate ions and dioxide silica. Methods: Xray phase analysis, inductively coupled plasma atomic emission spectrometry, method of thermal desorption of nitrogen, indicator method. Results. Magnetic powders based on magnetite Fe3O4 with a surface coated with сitrate ions (MNP) and silicon dioxide (MNP/SiO2) were obtained for sorption of organic and inorganic compounds from aqueous media. Their composition and magnetic properties were studied. It is shown that the obtained composition of magnetite coated with dioxide silica corresponds to the crystalline phase of Fe3O4 and amorphous phase of SiO2. Furthermore, the saturation magnetization Ms and average surface diameter of particles were determined. The sorption isotherms of organic and inorganic compounds on the surface of obtained nanopowders were described by the Langmuir equation, which indicates the formation of a monomolecular layer on the surface of the sorbents. The maximum sorption capacity of Ni2+, methylene blue and doxorubicin on silicon dioxidecoated magnetite powders was determined, it is 22,3, 14,7 and 18,8 mg/g, respectively. The charge of surface active centers of the magnetite was determined by the indicator method. The obtained results make it possible to simulate sorption of organic, inorganic substances and drugs in water purification and utilization of chemical compounds in pharmaceutical plants and cancer centers.

KW - Adsorption

KW - Charge of surface active centers

KW - Magnetic nanoparticles

KW - Organic and non;organic ions

KW - Surface modification

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EP - 172

JO - Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering

JF - Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering

SN - 2500-1019

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