Abstract
Superparamagnetic magnetite (Fe3O4) has potential biomedical applications, but its synthesis can be challenging and costly. We present a simple and facile method for synthesizing superparamagnetic magnetite via the co-precipitation method. The pH and stabilizer concentration were optimized to obtain high purity Fe3O4 nanoparticles with superparamagnetic characteristics, despite having an aggregated morphology. The results showed that the synthesized particles were micrometer-sized, and exhibited superparamagnetic behavior with a value of 40 emu/g. The conventional wisdom on superparamagnetic behavior is to attribute the phenomenon to the presence of nanosized crystallites and nanoparticles in the aggregated structure, however, our computational analysis through density functional theory shows that strain-related effects are an underlying cause for the paramagnetism of magnetite as well, which explains our experimental observations. Overall, the co-precipitation method presented in this study offers an easy, non-toxic, and fast method for synthesizing Fe3O4 nanoparticles, which is suitable for industrial-scale production.
Original language | English |
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Article number | 171895 |
Journal | Journal of Alloys and Compounds |
Volume | 968 |
DOIs | |
Publication status | Published - 15 Dec 2023 |
Bibliographical note
Publisher Copyright:© 2023
Funding
This work was supported by Scientific and Technological Research Council of Turkey ( TÜBİTAK ) 2209-a program, (project no: 1919B012000495 ) and NANOSILVER Kimya Sanayii Ticaret A.Ş. (Chemical Commerce & Industry Co.). Our sincere gratitude to Assoc. Prof. Seda Aksoy Esinoğlu from ITU Advanced Materials Research Laboratory for VSM measurements. Sevgin Türkeli for X-ray diffraction measurements. Dr. Yonca Alkan Göksü for FT-IR measurements. We also would like to thanks National Center for High Performance Computing of Turkey (UHeM) for supercomputer support, under grant no: 4014152022 . This work was supported by Scientific and Technological Research Council of Turkey (TÜBİTAK) 2209-a program, (project no: 1919B012000495) and NANOSILVER Kimya Sanayii Ticaret A.Ş. (Chemical Commerce & Industry Co.). Our sincere gratitude to Assoc. Prof. Seda Aksoy Esinoğlu from ITU Advanced Materials Research Laboratory for VSM measurements. Sevgin Türkeli for X-ray diffraction measurements. Dr. Yonca Alkan Göksü for FT-IR measurements. We also would like to thanks National Center for High Performance Computing of Turkey (UHeM) for supercomputer support, under grant no: 4014152022.
Funders | Funder number |
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National Center for High Performance Computing of Turkey | |
International Technological University | |
Ulusal Yüksek Başarımlı Hesaplama Merkezi, Istanbul Teknik Üniversitesi | 4014152022 |
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu | 1919B012000495 |
Keywords
- Aggregation
- Co-precipitation
- Dynamic Functional Theory
- Nano-structures
- Superparamagnetism