Nano-ilmenite FeTiO3: Synthesis and characterization

Abstract

In general, ilmenite FeTiO 3 is synthesized by solid-state reaction at very high pressure and high temperature. Synthesis of FeTiO 3 is not an easy task as the Fe 2 þ ions are not stable. Therefore, it is really challenging to prepare this material. In this work nano-ilmenite FeTiO 3 was synthesized by the sol-gel method. Structural, optical and magnetic characterizations were performed. The bandgap of FeTiO 3 was determined to be 2.8 eV showing FeTiO 3 as suitable wide bandgap material for technological applications. The FeTiO 3 nanoparticles exhibit weak ferromagnetic properties at and below room temperature. The Né el temperature was observed to be around 52 K.

Efficiency of Ilmenite Photocatalyst Material as Modelling for Antimicrobial Activity

“…The peaks indicating the presence of iron at the energy levels of 0.5, 6.3 and 7.1 keV, whereas the presence of titanium element at the energy levels of 0.5, 4.3 and 5.0 keV. This is in accordance with research performed by Rasidhar et al [32] and Raghavander et al [19]. Fig.…”

“…Increased activity of the material is determined by the value of the band gap energy that affects the movement of electrons in the semiconductor to form hydroxyl radical species. The decrease in the band gap value of FeTiO3 has been reported by several researchers likes Raghavender et al [19] have successfully synthesized FeTiO3 with a band value gap of 2.80 eV and Chen [18] who reports that FeTiO3 has a band gap value of 2.03 eV. From these results, it proved that FeTiO3 is formed between 2.8-2.03 eV so can be applied under visible light.…”

“…Based on Chen [18] and Raghavander et al [19] were used of Fe(NO 3 ) 3 very effective to serve as Fe source to form FeTiO 3 and decrease the band gap value of TiO 2 . The composites obtained were then recalcined at 450 °C for 1.5 h to remove solvents such as water and ethanol.…”

“…4A shows the presence of 5 specific peaks that the presence of natural FeTiO3 i.e. in 2θ were 20°, 24°, 36°, 48°, Raghvander et al [19] reported that FeTiO3 has particle size below 100 nm. In addition, Chen [18] successfully synthesizes FeTiO3 with particle size of 60 nm.…”

“…The addition of Fe(NO 3 ) 3 compound can decrease band gap value of TiO 2 by 2.03 eV. Raghavender et al [19] succeeded in synthesizing FeTiO 3 by adding Fe(NO 3 ) 3 and TiCl 4 using sol-gel method which has been applied as dye adsorption agent. FeTiO 3 containing ferro(II) oxide (FeO) and TiO 2 are classified in semiconductor materials as smart materials because they have photoactive properties and respond to visible light.…”