Infrared properties of Mg-doped LaFeO3 prepared by sol–gel method

Liu, Qingsheng; You, Zheng Jie; Zeng, Songshan; Guo, Huimin

doi:10.1007/s10971-016-4141-x

Cited by 22 publications

(5 citation statements)

References 18 publications

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“…The bands observe between 400-750 cm -1 are stronger and prominent and it may be due to the increasing of metal oxygen stretching vibration and no carbon residue because of high temperature processing. FT IR data of the prepared LaFeO3 samples were consistent with literature values [10,11]. Cubic liked crystallite structure was found at 450 °C.…”

Section: Ft Ir Analysissupporting

confidence: 88%

Preparation, Characterization and Optical Property of LaFeO3 Nanoparticles via Sol-Gel Combustion Method

2019

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Perovskite LaFeO3 is one of the most useful materials for the application in a catalyst, gas sensors, and fuel cells, etc. LaFeO3 nanoparticles were synthesized by the citrate sol-gel method. According to the TG-DTA analysis on LaFeO3 xerogel powder, the proper crystallization temperature was found to be at 450 °C. The TEM images also show clear crystal formation was started at 450 °C. The LaFeO3 nanocrystalline particles were obtained by sintering the calcined powders at different temperatures (800 °C, 900 °C, and 1000 °C) for 4 hours. The resulting particles were characterized by XRD, EDXRF, FT IR, and SEM analysis. At 900 °C, the XRD pattern of LaFeO3 shows an orthorhombic crystal structure. The average crystallite sizes vary between 30-60 nm and the increase in crystallite size with increasing sintering temperatures and it may be due to the increase in grain growth. FT IR analysis shows strong La-O and Fe-O vibrations. Based on the XRD and FT IR data, the optimum sintering temperature was chosen at 900 °C. The SEM micrographs show that the morphology of LaFeO3 has small-sized grains with round shape. The optical properties were determined by UV-visible spectroscopy in the wavelength range of 300 nm-700 nm. The optical band gap energy values of LaFeO3 using Tauc’s plot were found to be about 2.45 eV. These results indicate that the LaFeO3 prepared by the sol-gel method has a relatively lower band gap value and so it can have the potential for photocatalytic applications.

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Section: Ft Ir Analysissupporting

confidence: 88%

Preparation, Characterization and Optical Property of LaFeO3 Nanoparticles via Sol-Gel Combustion Method

2019

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“…These are the characteristic FTIR signatures of the octahedral FeO 6 groups in the perovskite compounds. 45 The metal-oxygen stretching band (Fe-O and Mn-O) at 554 cm À1 is found in LaFe 0.9 Mn 0.1 O 3 , whereas LaMnO 3 shows the metal-oxygen (Mn-O) stretching band at 592 cm À1 . The absorption band observed at B600 cm À1 in LaMnO 3 is related to Mn-O stretching in the octahedral site.…”

Section: Ftir Spectroscopy Studiesmentioning

confidence: 95%

Structural, magnetic, and dielectric properties of solution combustion synthesized LaFeO₃, LaFe_0.9Mn_0.1O₃, and LaMnO₃ perovskites

Lakshmi

Bera

Hiremath

et al. 2022

Phys. Chem. Chem. Phys.

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“…This peak is caused by N atoms that are in sp 2 hybridization with two carbon atoms (CNC). [ 1,43 ] Figure 8D is a high‐resolution spectrum showing two prominent La peaks, 854.54 and 838.5 eV, that are consistent with the 3d 3/2 and 3d 5/2 spin‐orbit splitting of La (III) ions in oxide. [ 21,22 ] The oxygen lattice (O L ) species and the hydroxyl oxygen (O H ) species are responsible for the two oxygen 1s peaks in Figure 8E that are seen at 531.74 and 532.82 eV, respectively.…”

Section: Resultsmentioning

confidence: 66%

“…The Debye–Scherrer equation

D = \frac{italicKλ}{β \cos θ}

was used to calculate the grain size, [ 43 ] where grain size is represented by ‘ D ’, the diffraction peak's full width at half maximum (FWHM) is represented by ‘ β ’, ‘ K ’ represents the Scherrer's constant = 0.89, Bragg's angle is represented by ‘ θ ’, and the X‐ray's wavelength is represented by ‘ λ ’. The calculated grain size of LF, g‐CN, and LFCN1 was found as 20.11, 7.375, and 17.25 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and performance assessment of a perovskite‐type nano photocatalyst for degradation of thiamethoxam

Pandey,

Bansal,

Toor

2023

Can J Chem Eng

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It is essential to remove thiamethoxam (THMX) from surface water as it negatively impacts the ecology and neurological systems of insects. Hence, a study was conducted to degrade THMX with different compositions of LaFeO3/g‐C3N4 (LFCN) composites. Several methods, including X‐ray powder diffraction (XRD), ultraviolet–visible spectroscopy (UV–Vis), X‐ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), and field emission scanning electron microscopy (FESEM), were applied to characterize the synthesized photocatalyst. The influence of many parameters on degradation, for example, THMX concentration, dosage of catalyst, and pH were studied experimentally. The degradation was highest under both UV‐C and sunlight for the synthesized catalyst, 1% LaFeO3/g‐C3N4 (LFCN1), in comparison to graphitic carbon nitride (g‐CN), and bare lanthanum ferrite (LF). The degradation was around 95% for LFCN1 under UV‐C light having an intensity of 15 W/m2 whereas degradation was 71.8% with LFCN1 photocatalyst under sunlight at neutral pH in 120 min of reaction time. The increased activity of LFCN1 was attributable to an improved surface area and a lower band gap. The study of reaction kinetics indicated second‐order behaviour. Additionally, a probable mechanism for degradation was put forth.

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Infrared properties of Mg-doped LaFeO3 prepared by sol–gel method

Cited by 22 publications

References 18 publications

Preparation, Characterization and Optical Property of LaFeO3 Nanoparticles via Sol-Gel Combustion Method

Preparation, Characterization and Optical Property of LaFeO3 Nanoparticles via Sol-Gel Combustion Method

Structural, magnetic, and dielectric properties of solution combustion synthesized LaFeO₃, LaFe_0.9Mn_0.1O₃, and LaMnO₃ perovskites

Synthesis, characterization, and performance assessment of a perovskite‐type nano photocatalyst for degradation of thiamethoxam

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Infrared properties of Mg-doped LaFeO3 prepared by sol–gel method

Cited by 22 publications

References 18 publications

Preparation, Characterization and Optical Property of LaFeO3 Nanoparticles via Sol-Gel Combustion Method

Preparation, Characterization and Optical Property of LaFeO3 Nanoparticles via Sol-Gel Combustion Method

Structural, magnetic, and dielectric properties of solution combustion synthesized LaFeO3, LaFe0.9Mn0.1O3, and LaMnO3 perovskites

Synthesis, characterization, and performance assessment of a perovskite‐type nano photocatalyst for degradation of thiamethoxam

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Structural, magnetic, and dielectric properties of solution combustion synthesized LaFeO₃, LaFe_0.9Mn_0.1O₃, and LaMnO₃ perovskites