Hydrothermal synthesis of La0.7Sr0.3MnO3 and its application in visible light photocatalytic activity

Arabi, Abbasali; Ehsani, M.H.; Fazli, Mostafa

doi:10.1007/s10854-019-02257-1

Cited by 15 publications

(7 citation statements)

References 41 publications

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“…It is clearly seen that 80% of the initial AO dye concentration was degraded after 2-h illumination time. The obtained result was similar to that obtained by A. Arabi et al who synthesized La 0.7 Sr 0.3 MnO 3 (LSMO) manganite by hydrothermal method showing DE about 70% in 120 min[47]. La 0.8 Nd 0.1 Sr 0.1 MnO 3 perovskite was found to be interestingly useful in photocatalytic application which confirms our theoretical analysis using DFT calculations.…”

supporting

confidence: 90%

Correlation between experimental and DFT calculations of photocatalytic and optical properties of La0.8Nd0.1Sr0.1MnO3 perovskite: degradation efficiency of methyl orange dye under visible-irradiated conditions

Messaoudi

Mabrouki

Moufida

et al. 2021

J Mater Sci: Mater Electron

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La 0.8 Nd 0.1 Sr 0.1 MnO 3 perovskite was synthesized using the citrate gel method. The crystal structure was studied by X-ray diffraction. The Rietveld refinement reveals a single R-3C rhombohedral structure. The morphological properties were investigated by a scanning electron microscopy, connected to an energydispersive X-ray detector for mapping and elements composition, showing a sponge-like structure behavior of agglomerated particles. The band gap energy and the optical properties were studied theoretically by Density-Functional Theory (DFT) calculations. It showed that La 0.8 Nd 0.1 Sr 0.1 MnO 3 exhibited a high photoabsorption property with band gap energy of & 2.5 eV. The methyl orange (MO) degradation properties were studied by measuring time-dependent UV-Visible absorption of the dye solution. The photocatalytic activity was evaluated at different times under visible light and ambient temperature conditions for La 0.8 Nd 0.1 Sr 0.1 MnO 3 solution. A high degradation rate of 80% in 120 min under UV irradiation conditions was observed. It indicated that La 0.8-Nd 0.1 Sr 0.1 MnO 3 presents high photocatalytic efficiency and could be a good candidate for MO degradation.

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supporting

confidence: 90%

Correlation between experimental and DFT calculations of photocatalytic and optical properties of La0.8Nd0.1Sr0.1MnO3 perovskite: degradation efficiency of methyl orange dye under visible-irradiated conditions

Messaoudi

Mabrouki

Moufida

et al. 2021

J Mater Sci: Mater Electron

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“…In general, the magnetic properties of perovskite NPs, such as saturation magnetization (M S ) and coercivity (H C ), are strongly affected by four main factors, including finite size effects, surface effects, magnetic anisotropy, and degree of crystallinity besides size and shape of nanoparticles (Nguyen et al 2021 ). Ferromagnetic behavior was observed at room temperature due to nanosized particle formation (Hannora and Hanna 2019 ), while nano wire morphology of La 0.7 Sr 0.3 MnO 3 sample with bandgap energy of 2 eV introduces 99% photodegradation under UVC- lights, which is confirmed by Arabi et al ( 2019a , b ).…”

Section: Resultsmentioning

confidence: 66%

“…As the orthorhombic phase’s Mn–O bond length is much smaller than the rhombohedral phase (Co–O and Fe–O), LSM perovskite nanoparticles may appreciably decrease effective bandgap energy with increasing orthorhombic phase (Tütüncü and Srivastava 2008 ). Arabi et al established that LSM has 2 eV as a bandgap which is a main factor for enhancing photocatalytic activities (Arabi et al 2019a , b ). Morphological reason denotes to rod-like shape of LSM nanoparticles, as shown in the SEM image of Fig.…”

Section: Resultsmentioning

confidence: 99%

Structure, magnetic, and photocatalysis of La0.7Sr0.3MO3 (M = Mn, Co, and Fe) perovskite nanoparticles: Novel photocatalytic materials

Ghozza

Yahia

Hussien

2023

Environ Sci Pollut Res

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The present study, La0.7Sr0.3MO3 (M = Mn-, Co-, and Fe-), perovskite, has successfully been synthesized via co-precipitation and sol–gel auto-combustion. XRD, SEM, and EDX characterized the prepared samples. XRD and SEM showed that the as-prepared La0.7Sr0.3MnO3 and La0.7Sr0.3CoO3 have multiphase. La0.7Sr0.3FeO3, in comparison, is nanosized, has a single-phase perovskite, and has a rather homogenous particle size distribution. Additionally, EDX mapping analysis shows that all pieces are distributed uniformly. According to X-ray diffractometer results, all calcined powders contain 100% LSF, more than 15% perovskite phase of LSC, 47% LSM, and other secondary phases, such as cobalt oxide. Aِt room temperature and magnetic field of ± 20 kG, La0.7Sr0.3MnO3 exhibited weak ferromagnetic behavior in a low magnetic field, whereas diamagnetic behavior was seen in a high magnetic field. La0.7Sr0.3FeO3 samples behave as strong ferromagnetic. On the contrary, the photodegradation of La0.7Sr0.3MnO3 is 99% compared to 75% and 91% for other samples under UVC lights of wavelength = 254 nm. The degradation rate for La0.7Sr0.3MnO3 is 0.179 higher, about 3.25 and 2.23, than the other samples. A La0.7Sr0.3MnO3 nanocomposite performs as a photocatalyst to enhance the efficiency of methylene blue photodegradation. This study boosts good UVC photocatalysts with high efficiency for different kinds of dyes. Hence, the catalyst possessed high stability and efficiency for continuous wastewater treatment.

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“…The intercepts of the extrapolation of the linear region (red dashed line) to the x-axis marked the E g values, as shown in Figure 3. The quantified E g values for T6 to T18 ranged from 3.205 eV to 3.450 eV, which is greater than the published value for the LSMO of 2 eV [27]. This is addressed with the occurrence of the quantum confinement effect, where particle-size reduction induces a broadening of the energy level distance between the valence band maximum to the conduction band minimum [28].…”

Section: Resultsmentioning

confidence: 87%

Characterisations of La-Sr-Mn-O (LSMO) Thin Film Fabricated by RF Sputtering

et al. 2023

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A revisited study of perovskite-based manganite La0.67Sr0.33MnO3 (LSMO) deposited onto corning-glass (CG) substrates is reported here. The LSMO films were fabricated with RF sputtering with different deposition times, varying from 60 to 180 min, resulting in films with thicknesses of 35.0–109.7 nm. Rietveld refinements of the XRD spectrum showed that the samples exhibited hexagonal structures with a space group of R-3c (167) and remained unmodified structures. Clusters of monolayer growth were observed from the morphologies of the films. Interestingly, the average particle size obtained with an AFM perceived an insignificant variation of 31.7–35.6 nm despite the film thickness increment. Optical, electrical and magnetic properties were studied, as particle-size variation usually has a notable contribution to changes in these properties. It was found that the optical band gap (Eg) was in direct variation with the deposition time due to enhanced thickness and surface roughness. The temperature dependence of the resistivity graph was fitted with the percolation model to obtain further enlightenment on the electrical transport in the films. Low-field magnetoresistance (LFMR) was observed for all samples. Ferromagnetic to paramagnetic transition was observed in the vicinity of all samples’ TC values.

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Hydrothermal synthesis of La0.7Sr0.3MnO3 and its application in visible light photocatalytic activity

Cited by 15 publications

References 41 publications

Correlation between experimental and DFT calculations of photocatalytic and optical properties of La0.8Nd0.1Sr0.1MnO3 perovskite: degradation efficiency of methyl orange dye under visible-irradiated conditions

Correlation between experimental and DFT calculations of photocatalytic and optical properties of La0.8Nd0.1Sr0.1MnO3 perovskite: degradation efficiency of methyl orange dye under visible-irradiated conditions

Structure, magnetic, and photocatalysis of La0.7Sr0.3MO3 (M = Mn, Co, and Fe) perovskite nanoparticles: Novel photocatalytic materials

Characterisations of La-Sr-Mn-O (LSMO) Thin Film Fabricated by RF Sputtering

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