Simple polyol route to synthesize heptanoic acid coated magnetite (Fe3O4) nanoparticles

Polyol synthesis of Mn3+ substituted Fe3O4 nanoparticles: Cation distribution, structural and electrical properties

“…Polyol can be described as the heating of precursors in a multi-valent high boiling solvents (with the reducing property of them). Polyol method has many advantages over the other like high polarity solvents are used and well soluble product can be obtained, Nucleation and growth of particles can be performed up to the boiling point of the polyol solvent, due to the high synthesis temperature at around 300°C (range is 150-300°C), well crystallized products can be obtained, in principle, the synthesis is comparably easy to perform [19][20][21].…”

Preparation and magnetic and thermal properties of flexible polyimide films with iron nitrophthalocyanine-coated magnetite microspheres

“…A series of flexible Fe 3 O 4 /FePc/PI composite films were prepared with various Fe 3 O 4 /FePc nanoparticle loadings (15,27, and 40 wt%) by one-step synthesis method and imidization temperatures (at 200 C and 300 C). The hybrid microspheres were uniformly dispersed in the polymer matrices without any agglomeration, which had been confirmed by the analysis of SEM images.…”

“…To avoid such drawbacks, herein we report a one-step hydrothermal route to synthesize Fe-nitrophthalocyaninecoated Fe 3 O 4 microspheres and then to prepare Fe 3 O 4 / FePc/PI composite films with various Fe 3 O 4 /FePc nanoparticle loadings (15,27, and 40 wt %) and different imidization temperatures (at 200 and 300 C). The prepared composite films were characterized for their structure and morphology using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM).…”

Preparation and characterization of SPION functionalized via caffeic acid

“…2a that could be assigned to the structural OH groups as well as to the traces of molecular water and citric acid. The functional -COOH group in CA became -COO-and finally attached to Fe 3 O 4 NPs surface, so the modification is chemical adsorption [26][27][28][29][30]. However, the strong peak at 1596 cm À 1 of pure CA ((symmetric stretching)) shifts to 1560 cm À 1 in CA capped Fe 3 O 4 nanocomposites and becomes weaker, which is caused by the reaction of -COOH and -OH (adsorbed).…”

“…To enhance the compatibility between Fe 3 O 4 (magnetite) MNPs and tailor the surface properties or functionalization of MNPs, surface modification of Fe 3 O 4 NPs is necessary. Many surfactant stablized Fe 3 O 4 MNPs have been synthesized to enhance its biological and industrial application, such as perfluoropolyether carboxylic acid [10], such as oleic acid [1], lauric acid [11], citric acid coated Fe 3 O 4 [12], humic acid [13], and bilayer oleic acid-coated [14] and heptanoic acid [15].…”