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Effects of Process Variables on Properties of $CoFe_{2}O_{4}$ Nanoparticles Prepared by Solvothermal Process
| Content Provider | MDPI |
|---|---|
| Author | Duong, Hong Diu Thi Kim, Kyo-Seon |
| Copyright Year | 2021 |
| Description | Controlling the morphology and magnetic properties of $CoFe_{2}O_{4}$ nanoparticles is crucial for the synthesis of compatible materials for different applications. $CoFe_{2}O_{4}$ nanoparticles were synthesized by a solvothermal method using cobalt nitrate, iron nitrate as precursors, and oleic acid as a surfactant. The formation of $CoFe_{2}O_{4}$ nanoparticles was systematically observed by adjusting synthesis process conditions including reaction temperature, reaction time, and oleic acid concentration. Nearly spherical, monodispersed $CoFe_{2}O_{4}$ nanoparticles were formed by changing the reaction time and reaction temperature. The oleic acid-coated $CoFe_{2}O_{4}$ nanoparticles inhibited the growth of particle size after 1 h and, therefore, the particle size of $CoFe_{2}O_{4}$ nanoparticles did not change significantly as the reaction time increased. Both without and with low oleic acid concentration, the large-sized cubic $CoFe_{2}O_{4}$ nanoparticles showing ferromagnetic behavior were synthesized, while the small-sized $CoFe_{2}O_{4}$ nanoparticles with superparamagnetic properties were obtained for the oleic acid concentration higher than 0.1 M. This study will become a basis for further research in the future to prepare the high-functional $CoFe_{2}O_{4}$ magnetic nanoparticles by a solvothermal process, which can be applied to bio-separation, biosensors, drug delivery, magnetic hyperthermia, etc. |
| Starting Page | 3056 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano11113056 |
| Journal | Nanomaterials |
| Issue Number | 11 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-13 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Cobalt Ferrite Nanoparticles Controlled Synthesis Solvothermal Method Oleic Acid Magnetic Properties |
| Content Type | Text |
| Resource Type | Article |
