Solvothermal synthesis and characterization of acicular α-Fe2O3 nanoparticles

Abstract

Nanometer-sized α-Fe 2 O 3 particles have been prepared by a simple solvothermal method using ferric acetylacetonate as a precursor. The products were characterized by X-ray diffraction (XRD), energy dispersive X-ray microanalysis (EDAX), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transition electron microscopy (TEM), infrared spectroscopy (IR) and thermal analysis (TG-DTA). XRD indicates that the product is single-phase α-Fe 2 O 3 with rhombohedral structure. Bundles of acicular shaped nanoparticles are seen in TEM images with an aspect ratio ~ 12; typically 8-12 nm wide and over 150 nm long. The α-Fe 2 O 3 nanoparticles posses a high thermal stability, as observed on thermal analysis traces.

Synthesis and characterization of iron oxide nanoparticles by solvothermal method

“…4 indicated presence of absoption bands at 3354, 2359, 1621, 1033, 920 and 602 cm -1 . These observed bands may be due to O-H stretching (3354 cm -1 ), C-O bending (2359 cm -1 ), N-H stretching and bending (1621 cm -1 ), C-H stretch ing (1033 cm -1 ), vibrations [8,9] and vibrations of Fe-O bond (602 cm -1 ) which is in agreement with the lit erature values [10,11].…”

Green synthesis, characterization of biomaterial-supported zero-valent iron nanoparticles for contaminated water treatment

“…Several physical and chemical production methods including mechanical milling (Karimi et al 2014), sodium borohydride (Satapanajaru et al 2008;Madhavi et al 2014), ethylene glycol (Raveendran et al 2003), solvothermal method (Basavaraju et al 2011), and carbothermal synthesis (Allabaksh et al 2010) have been employed for the preparation of ZVIN. But ZVIN, synthesized by above conventional methods, agglomerate rapidly in clusters due to Van der Waals and magnetic forces (Qiangu et al 2013).…”

Geometrical structure, potentiometric and thermodynamic studies of rhodanine azodye and its metal complexes

“…The XRD pattern of the ligand (HL) has many sharp diffraction peaks at around 2θ = 10-15°and 2θ = 20-25°this indicates that HL is a polycrystalline phase. The average crystallite size (ξ) can be calculated from the XRD pattern according to Debye-Scherrer equation [24,25]:…”