Synthesis of Fe3O4–Fe2O3@C Core-Shell Nanoparticles: Effect of Reactional Parameters on Structural and Magnetics Properties
| Autor: | Márcio Antônio Fiori, Marla M. Lima, Humberto Gracher Riella, Domingos Lusitâneo Pier Macuvele, Luciano Luiz Silva, Cíntia Soares, Janaína Nones |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation 0104 chemical sciences Magnetization Chemical engineering Transmission electron microscopy Materials Chemistry Fourier transform infrared spectroscopy 0210 nano-technology Spectroscopy Field emission gun |
| Zdroj: | Journal of Inorganic and Organometallic Polymers and Materials. 29:1848-1861 |
| ISSN: | 1574-1451 1574-1443 |
| Popis: | The goal of this paper was to synthesize and characterize core–shell iron-carbon nanoparticles. For this purpose, nanoparticles were synthetized via a hydrothermal co-precipitation route, applying a 22 factorial experimental design with a central point, and varying both the concentration of the iron precursor (iron nitrate) and the reaction temperature. The nanoparticles were characterized via the following analysis: vibrating sample magnometry (VSM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDX), high resolution field emission gun scanning electron microscopy (SEM/FEG) and transmission electron microscopy (TEM) analysis. The results showed that the hydrothermal co-precipitation synthesis route enabled the production of Fe3O4–Fe2O3@C core–shell nanoparticles with dimensions between 4 and 8 nm. An increase in iron nitrate concentration and temperature during synthesis entailed a decrease in the remnant field and the magnetization of the nanoparticles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink