Synthesis and Characterization of α-Fe2O3 Nanoparticles by Microemulsion Method

Abstract

In this study, α-Fe2O3 nanoparticles (NPs) were synthesized by microemulsion method. Synthesized NPs were characterized by X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Differential Thermal Analysis (DTA), Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) spectra, and UV-Visible techniques. According to TGA analysis, it has been observed that a complete formation of Fe2O3 at around 400 °C. According to SEM images, plate like structure formation was observed in α-Fe2O3 NPs with homogeneous dispersion. Approximately 13.1 nm particle size was calculated from the XRD data by using the Scherrer equation. Fe-O vibrations in octahedral and tetrahedral regions were obtained in the FTIR spectrum. According to UV-Vis spectrum, it was determined that NPs showed optical absorption feature at wavelength of around 420 nm. In addition, optical band gap of the α-Fe2O3 NPs was calculated 3.2 eV.

Green electrochemical nanosensor platform design for mexiletine detection based on Citrus reticulata peel-mediated iron nanoparticles and quantum dots and investigation of the adsorption mechanism by the DFT-D3 method

“…The UV-vis spectrum indicates that the absorbance peaks in the 200–300 nm wavelength range were associated with the shape of the FeNPs. 61 Another characteristic of CQDs is a powerful absorption band that shifts from the UV to the visible region. This band is assumed to be due to surface alteration or heteroatom doping.…”

“…59 The broad peak around 3020-3584 cm À1 is responsible for asymmetric and symmetric H-O-H stretching, whereas the peak at 1652 cm À1 is attributed to H-O-H. 60 The UV-vis spectrum indicates that the absorbance peaks in the 200-300 nm wavelength range were associated with the shape of the FeNPs. 61 Another characteristic of CQDs is a powerful absorption band that shifts from the UV to the visible region. This band is assumed to be due to surface alteration or heteroatom doping.…”

A Review on Impacting Parameters for Photocatalytic Degradation of Organic Effluents by Ferrites and Their Nanocomposites

“…There are many different chemical and physical processes used for the synthesis of ferrite nanoparticles. Chemical-based techniques have been used to synthesise Fe 2 O 3 nanoparticles, including reverse micelles [40], co-precipitation [41], sonochemical reactions [42], thermal decomposition [43], sol-gel synthesis [44], hydrothermal [45], and micro-emulsion technology [46].…”