Amino-Functionalized Fe 3 O 4 @SiO 2 Core-Shell Magnetic Nanoparticles for Dye Adsorption.
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| Title: | Amino-Functionalized Fe 3 O 4 @SiO 2 Core-Shell Magnetic Nanoparticles for Dye Adsorption. |
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| Authors: | Lin, Chun-Rong1 (AUTHOR) crlinspin@gmail.com, Ivanova, Oxana S.2,3 (AUTHOR) crlinspin@gmail.com, Petrov, Dmitry A.2 (AUTHOR) alexeys@iph.krasn.ru, Sokolov, Alexey E.2,3 (AUTHOR) zharkov@iph.krasn.ru, Chen, Ying-Zhen1 (AUTHOR) chargedw@yahoo.com.tw, Gerasimova, Marina A.3 (AUTHOR), Zharkov, Sergey M.2,3 (AUTHOR) nico@iph.krasn.ru, Tseng, Yaw-Teng1 (AUTHOR), Shestakov, Nicolay P.2 (AUTHOR) ise@iph.krasn.ru, Edelman, Irina S.2 (AUTHOR) |
| Source: | Nanomaterials (2079-4991). Sep2021, Vol. 11 Issue 9, p2371. 1p. |
| Subjects: | Iron oxides, Magnetite, Magnetic nanoparticles, Congo red (Staining dye), Chemical bonds, Langmuir isotherms |
| Abstract: | Fe3O4@SiO2 core-shell nanoparticles (NPs) were synthesized with the co-precipitation method and functionalized with NH2 amino-groups. The nanoparticles were characterized by X-ray, FT-IR spectroscopy, transmission electron microscopy, selected area electron diffraction, and vibrating sample magnetometry. The magnetic core of all the nanoparticles was shown to be nanocrystalline with the crystal parameters corresponding only to the Fe3O4 phase covered with a homogeneous amorphous silica (SiO2) shell of about 6 nm in thickness. The FT-IR spectra confirmed the appearance of chemical bonds at amino functionalization. The magnetic measurements revealed unusually high saturation magnetization of the initial Fe3O4 nanoparticles, which was presumably associated with the deviations in the Fe ion distribution between the tetrahedral and octahedral positions in the nanocrystals as compared to the bulk stoichiometric magnetite. The fluorescent spectrum of eosin Y-doped NPs dispersed in water solution was obtained and a red shift and line broadening (in comparison with the dye molecules being free in water) were revealed and explained. Most attention was paid to the adsorption properties of the nanoparticles with respect to three dyes: methylene blue, Congo red, and eosin Y. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for all three dyes. The equilibrium data were more compatible with the Langmuir isotherm and the maximum adsorption capacity was reached for Congo red. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Amino-Functionalized Fe 3 O 4 @SiO 2 Core-Shell Magnetic Nanoparticles for Dye Adsorption. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lin%2C+Chun-Rong%22">Lin, Chun-Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> crlinspin@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Ivanova%2C+Oxana+S%2E%22">Ivanova, Oxana S.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> crlinspin@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Petrov%2C+Dmitry+A%2E%22">Petrov, Dmitry A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> alexeys@iph.krasn.ru</i><br /><searchLink fieldCode="AR" term="%22Sokolov%2C+Alexey+E%2E%22">Sokolov, Alexey E.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> zharkov@iph.krasn.ru</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Ying-Zhen%22">Chen, Ying-Zhen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chargedw@yahoo.com.tw</i><br /><searchLink fieldCode="AR" term="%22Gerasimova%2C+Marina+A%2E%22">Gerasimova, Marina A.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zharkov%2C+Sergey+M%2E%22">Zharkov, Sergey M.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> nico@iph.krasn.ru</i><br /><searchLink fieldCode="AR" term="%22Tseng%2C+Yaw-Teng%22">Tseng, Yaw-Teng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shestakov%2C+Nicolay+P%2E%22">Shestakov, Nicolay P.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> ise@iph.krasn.ru</i><br /><searchLink fieldCode="AR" term="%22Edelman%2C+Irina+S%2E%22">Edelman, Irina S.</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Sep2021, Vol. 11 Issue 9, p2371. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Iron+oxides%22">Iron oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetite%22">Magnetite</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+nanoparticles%22">Magnetic nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Congo+red+%28Staining+dye%29%22">Congo red (Staining dye)</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+bonds%22">Chemical bonds</searchLink><br /><searchLink fieldCode="DE" term="%22Langmuir+isotherms%22">Langmuir isotherms</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Fe3O4@SiO2 core-shell nanoparticles (NPs) were synthesized with the co-precipitation method and functionalized with NH2 amino-groups. The nanoparticles were characterized by X-ray, FT-IR spectroscopy, transmission electron microscopy, selected area electron diffraction, and vibrating sample magnetometry. The magnetic core of all the nanoparticles was shown to be nanocrystalline with the crystal parameters corresponding only to the Fe3O4 phase covered with a homogeneous amorphous silica (SiO2) shell of about 6 nm in thickness. The FT-IR spectra confirmed the appearance of chemical bonds at amino functionalization. The magnetic measurements revealed unusually high saturation magnetization of the initial Fe3O4 nanoparticles, which was presumably associated with the deviations in the Fe ion distribution between the tetrahedral and octahedral positions in the nanocrystals as compared to the bulk stoichiometric magnetite. The fluorescent spectrum of eosin Y-doped NPs dispersed in water solution was obtained and a red shift and line broadening (in comparison with the dye molecules being free in water) were revealed and explained. Most attention was paid to the adsorption properties of the nanoparticles with respect to three dyes: methylene blue, Congo red, and eosin Y. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for all three dyes. The equilibrium data were more compatible with the Langmuir isotherm and the maximum adsorption capacity was reached for Congo red. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano11092371 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: 2371 Subjects: – SubjectFull: Iron oxides Type: general – SubjectFull: Magnetite Type: general – SubjectFull: Magnetic nanoparticles Type: general – SubjectFull: Congo red (Staining dye) Type: general – SubjectFull: Chemical bonds Type: general – SubjectFull: Langmuir isotherms Type: general Titles: – TitleFull: Amino-Functionalized Fe 3 O 4 @SiO 2 Core-Shell Magnetic Nanoparticles for Dye Adsorption. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lin, Chun-Rong – PersonEntity: Name: NameFull: Ivanova, Oxana S. – PersonEntity: Name: NameFull: Petrov, Dmitry A. – PersonEntity: Name: NameFull: Sokolov, Alexey E. – PersonEntity: Name: NameFull: Chen, Ying-Zhen – PersonEntity: Name: NameFull: Gerasimova, Marina A. – PersonEntity: Name: NameFull: Zharkov, Sergey M. – PersonEntity: Name: NameFull: Tseng, Yaw-Teng – PersonEntity: Name: NameFull: Shestakov, Nicolay P. – PersonEntity: Name: NameFull: Edelman, Irina S. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 11 – Type: issue Value: 9 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
| ResultId | 1 |
