Simple polyol route to synthesize heptanoic acid coated magnetite (Fe{sub 3}O{sub 4}) nanoparticles

Journal Article · Fri Mar 15 04:00:00 EDT 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.12.028· OSTI ID:22290407

Gunay, M. ^[1]; Kavas, H. ^[2]

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1. Department of Chemistry, Fatih University, 34500, Büyükçekmece, Istanbul (Turkey)
2. 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, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 48; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DIELECTRIC PROPERTIES
FERRITES
HEPTANOIC ACID
IRON CHLORIDES
IRON OXIDES
MAGNETIC PROPERTIES
MAGNETITE
NANOSTRUCTURES
PARTICLES
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
VIBRATING SAMPLE MAGNETOMETERS