Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions
Here we report a simple two-step synthesis of magnetite nanoparticles (NPs) coated with silica shell functionalized with 3-aminopropyl groups. The content of surface amino groups within the range of 0.7–2.8 mmol g −1 was established by elemental analysis and acid–base titration. The materials obtain...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
2015-03-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.33.3.297 |
| _version_ | 1797283916345769984 |
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| author | Oleksandr Zavoiura Olga Zaporozhets Olesya Volovenko Inna V. Melnyk Yuriy L. Zub |
| author_facet | Oleksandr Zavoiura Olga Zaporozhets Olesya Volovenko Inna V. Melnyk Yuriy L. Zub |
| author_sort | Oleksandr Zavoiura |
| collection | DOAJ |
| description | Here we report a simple two-step synthesis of magnetite nanoparticles (NPs) coated with silica shell functionalized with 3-aminopropyl groups. The content of surface amino groups within the range of 0.7–2.8 mmol g −1 was established by elemental analysis and acid–base titration. The materials obtained are hydrolytically stable in acidic medium and are rapidly separated from the solution using an external magnetic field. It was shown that the prepared NPs efficiently extract palladium(II) ions in the form of [PdCl 4 ] 2– from the solution. The kinetics of adsorption was well described by the second-order model with the rate constant of approximately 0.76 g mmol −1 minute −1 . The isotherm of adsorption is fitted by the Langmuir model with the maximum [PdCl 4 ] 2– adsorption capacity of 0.158 mmol g −1 . |
| first_indexed | 2024-03-07T17:37:48Z |
| format | Article |
| id | doaj.art-318754febd964e1183431a7e45c92157 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T17:37:48Z |
| publishDate | 2015-03-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-318754febd964e1183431a7e45c921572024-03-02T16:20:49ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382015-03-013310.1260/0263-6174.33.3.297Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous SolutionsOleksandr Zavoiura0Olga Zaporozhets1Olesya Volovenko2Inna V. Melnyk3Yuriy L. Zub4 Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, Kyiv 01033, Ukraine Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, Kyiv 01033, Ukraine Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, Kyiv 01033, Ukraine Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17 General Naumov Street, Kyiv 03164, Ukraine Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17 General Naumov Street, Kyiv 03164, UkraineHere we report a simple two-step synthesis of magnetite nanoparticles (NPs) coated with silica shell functionalized with 3-aminopropyl groups. The content of surface amino groups within the range of 0.7–2.8 mmol g −1 was established by elemental analysis and acid–base titration. The materials obtained are hydrolytically stable in acidic medium and are rapidly separated from the solution using an external magnetic field. It was shown that the prepared NPs efficiently extract palladium(II) ions in the form of [PdCl 4 ] 2– from the solution. The kinetics of adsorption was well described by the second-order model with the rate constant of approximately 0.76 g mmol −1 minute −1 . The isotherm of adsorption is fitted by the Langmuir model with the maximum [PdCl 4 ] 2– adsorption capacity of 0.158 mmol g −1 .https://doi.org/10.1260/0263-6174.33.3.297 |
| spellingShingle | Oleksandr Zavoiura Olga Zaporozhets Olesya Volovenko Inna V. Melnyk Yuriy L. Zub Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions Adsorption Science & Technology |
| title | Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions |
| title_full | Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions |
| title_fullStr | Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions |
| title_full_unstemmed | Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions |
| title_short | Silica-Coated Magnetite Nanoparticles Modified with 3-Aminopropyl Groups for Solid-Phase Extraction of Pd(II) Ions from Aqueous Solutions |
| title_sort | silica coated magnetite nanoparticles modified with 3 aminopropyl groups for solid phase extraction of pd ii ions from aqueous solutions |
| url | https://doi.org/10.1260/0263-6174.33.3.297 |
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