Simple polyol route to synthesize heptanoic acid coated magnetite (Fe{sub 3}O{sub 4}) nanoparticles
- Department of Chemistry, Fatih University, 34500, Büyükçekmece, Istanbul (Turkey)
- Department of Physics Engineering, Faculty of Sciences, Istanbul Medeniyet University, 34720, Istanbul (Turkey)
Highlights: ► Heptanoic acid@Fe{sub 3}O{sub 4} nanocomposite has been prepared via simple polyol. ► Heptanoic acid used as both surfactant and solvents. ► Magneto polymer composite with adjustable Ea has a potential usage as functional composites. - Abstract: Magnetite (Fe{sub 3}O{sub 4}) nanoparticles were prepared via polyol method by using FeCl{sub 2} as only source of iron. As-prepared samples were characterized by powder X-ray diffractometer (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analyzer (TGA) and vibrating sample magnetometer (VSM). Crystalline phase was identified as Fe{sub 3}O{sub 4} and the crystallite sizes were calculated as 19.1 ± 1.1 and 22 ± 1.3 nm for uncalcinated and calcinated products from X-ray line profile fitting. The capping of heptanoic acid around Fe{sub 3}O{sub 4} nanoparticles was confirmed by FT-IR spectroscopy, the interaction being via bridging oxygen's of the carboxylate and the nanoparticle surface and also by TG analysis. VSM measurements showed that both samples exhibited typical superparamagnetic behavior at room temperature with different Ms values. The ε′ decreases with increasing frequency for both composites and permeability has almost same values for all temperatures at higher frequencies. As synthesized and calcinated samples conductivity increase linearly with the temperature.
- OSTI ID:
- 22290407
- Journal Information:
- Materials Research Bulletin, Vol. 48, Issue 3; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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