Data on study of hematite nanoparticles obtained from Iron(III) oxide by the Pechini method

Abstract

This article presents the data on α-Fe 2 O 3 nanoparticles synthesized via Pechini method using iron(III) oxide precursor from steel industry. It is important to highlight the added value that is given to an industrial waste. The samples were characterized by thermal analysis (DTA, TG), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The TG showed three mass changes, whereas DTA resulted in three anomalies. X-ray diffraction pattern of the samples disclosed rhombohedral structure characteristic of the nanocrystalline α-Fe 2 O 3 phase. The crystallite size was estimated for each thermal treatment. Fourier transform infrared spectroscopy confirms the phase purity of prepared nanoparticles. A detailed study on the local structure of the samples was carry out in the region of 800 and 400 cm −1 , where the associated bands of Fe–O bonds are presents. The data have not been reported nor discussed for now.

Effect of B-site Co substitution on the structure and magnetic properties of nanocrystalline neodymium orthoferrite synthesized by auto-combustion

“…This results in a shift to higher frequencies in the FTIR spectra. The stretching vibration frequencies of ferric oxide which usually occurring around 300, 400 and 500 cm −1 are absent, because they fall below the detection limit of the instrument [29,30]. M-O bond frequencies generally occur between 270 and [30,31].…”

Activated Carbon from Yam Peels Modified with Fe3O4 for Removal of 2,4-Dichlorophenoxyacetic Acid in Aqueous Solution

“…For adsorption at 25 • C, R 2 average values of 0.9921 and 0.9974 were obtained for AC and MAC, respectively. These results suggest that limiting of the adsorption mechanism was mainly due to chemical interactions (chemisorption) that involve valence and electron exchange forces between the adsorbent and adsorbate [48,49]. In the literature it is reported that the pseudo-second-order model better predicts the adsorption of 2,4-D onto carbon's surface, as well as that of pesticides as adsorbates such as ametryn, aldicarb, dinoseb, diuron [50], and carbofuran [5].…”

Simple One-Step Leaf Extract-Assisted Preparation of α-Fe2O3 Nanoparticles, Physicochemical Properties, and Its Sunlight-Driven Photocatalytic Activity on Methylene Blue Dye Degradation

“…The second weight loss is due to the phytochemicals present in the hematite nanoparticles which evaporated. And the third weight loss is due to the formation of a completely pure alpha-Fe 2 O 3 phase [58][59][60]. The endothermic peaks were observed at the DTA thermograph at 286, 916, and 910°C temperatures.…”

“…The endothermic peaks were observed at the DTA thermograph at 286, 916, and 910°C temperatures. The peaks were obtained in the DSC thermograph due to the evaporation of water and organic substances and crystallization of iron oxide [58][59][60].…”