Microwave-assisted synthesis of nanoparticulate perovskite LaFeO3 as a high active visible-light photocatalyst

Tang, Peixiao; Tong, Yi; Chen, Haifeng; Cao, Feng; Pan, Guoxiang

doi:10.1016/j.cap.2012.08.006

Cited by 142 publications

(41 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 10 shows the M-H hysteresis loop of LaFeO 3 nanospheres at (300 K) room temperature. The saturation magnetization M s value is found to be about 1.152 emu/g which is higher than previous report [30], indicating that LaFeO 3 has a weak magnetic behaviour. The inset in Fig.…”

Section: Magnetic Property Studiesmentioning

confidence: 34%

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Kumar

Jayavel

2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

LaFeO 3 nanospheres were synthesized by hydrothermal method followed by calcination. Citric acid was found to be key factor to the purity and the surface morphology of the LaFeO 3 nanospheres. The obtained nanospheres have been structurally characterized by XRD which confirms the single crystalline orthorhombic structure. The structural information of the nanosphere was also confirmed from the Raman spectrum. HRSEM and AFM revealed that the prepared sample has been composed of spherical like morphology with an average size of about 45 nm. From XPS analysis, the chemical state of the LaFeO 3 nanospheres was confirmed. Magnetic measurement indicates the products shows weak magnetic behaviour. The UV-Vis spectroscopy analysis shows strong absorption at 466 nm which confirms that the obtained material has excellent visible light absorption ability. Furthermore, the photocatalytic experiment demonstrates that the prepared LaFeO 3 nanospheres exhibit well and stable photocatalytic activity for decomposition of methyl orange under visible-light irradiation.

show abstract

Section: Magnetic Property Studiesmentioning

confidence: 34%

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Kumar

Jayavel

2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…Meanwhile, Tauc plot of perovskites (figure 7(e)) indicated the band gap energy (E g ) of about 1.87-2.2 eV, leading to extend the region of the higher photon absorption zone in the visible light. The authors [31,32] also obtained the same results, and indicated that LaBO 3 had low band gap energy as well as visible waves region of the photon absorption. The UV-vis spectrum of the UiO66-NH 2 (figure 7(c)) indicated an absorption band-edge at around 440 nm, while pristine UiO66 was transparent 350-800 nm [33].…”

Section: Physicochemical Characteristics Of Materialssupporting

confidence: 63%

Thin film nano-photocatalyts with low band gap energy for gas phase degradation of p -xylene: TiO ₂ doped Cr, UiO66-NH ₂ and LaBO ₃ (B = Fe, Mn, and Co)

Lộc

Nguyen

Tri

et al. 2017

Adv. Nat. Sci: Nanosci. Nanotechnol.

View full text Add to dashboard Cite

By dip-coating technique the thin films of nano-photocatalysts TiO2, Cr-doped TiO2, LaBO3 perovskites (B = Fe, Mn, and Co) prepared by sol-gel method, and UiO66-NH2 prepared by a solvothermal were obtained and employed for gas phase degradation of p-xylene. Physicochemical characteristics of the catalysts were examined by the methods of BET, SEM, TEM, XRD, FT-IR, TGA, Raman and UV–vis spectroscopies. The thickness of film was determined by a Veeco-American Dektek 6M instrument. The activity of catalysts was evaluated in deep photooxidation of p-xylene in a microflow reactor at room temperature with the radiation sources of a UV (λ = 365 nm) and LED lamps (λ = 400–510 nm). The obtained results showed that TiO2 and TiO2 doped Cr thin films was featured by an anatase phase with nanoparticles of 10–100 nm. Doping TiO2 with 0.1%mol Cr2O3 led to reduce band gap energy from 3.01 down to 1.99 eV and extend the spectrum of photon absorption to the visible region (λ = 622 nm). LaBO3 perovkite thin films were also featured by a crystal phase with average particle nanosize of 8–40 nm, a BET surface area of 17.6–32.7 m2 g−1 and band gap energy of 1.87–2.20 eV. UiO66-NH2 was obtained in the ball shape of 100–200 nm, a BET surface area of 576 m2 g−1 and a band gap energy of 2.83 eV. The low band gap energy nano-photocatalysts based on Cr-doped TiO2 and LaBO3 perovskites exhibited highly stable and active for photo-degradation of p-xylene in the gas phase under radiation of UV–vis light. Perovskite LaFeO3 and Cr–TiO2 thin films were the best photocatalysts with a decomposition yield being reached up to 1.70 gp-xylene/gcat.

show abstract

“…They generally crystallize in the orthorhombic perovskite structure in which the FeO 6 octahedra get distorted to the extent decided by the size of rare-earth ions. They have potential for various applications such as solid oxide fuel cells, sensors, magnetooptic materials, electrode materials, catalysts, and magnetic resonance imaging (MRI) in biomedicine [12][13][14][15]. Recently, rare-earth orthoferrite compounds with perovskite structure [16][17][18][19], such as SmFeO 3 , LaFeO 3 , GdFeO 3 , EuFeO 3 , NdFeO 3 , PrFeO 3 , and YFeO 3 , have received increasing attention and been applied as photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Self-propagating combustion synthesis and synergistic photocatalytic activity of GdFeO3 nanoparticles

Wang

2016

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

GdFeO 3 (GFO) nanoparticles were synthesized by a glycine-assisted self-propagating combustion process. The as-synthesized GdFeO 3 was characterized by X-ray diffraction, transmission electron microscopy, and UV-Vis diffuse reflectance spectra. The visible-light-responsive photocatalytic activity of GdFeO 3 nanoparticles was evaluated by the photodegradation of Rhodamine B under visible light. The results indicate that the as-prepared GdFeO 3 nanoparticles exhibit remarkable visible-light photocatalytic activity through the synergism of semiconductor-photocatalyzed oxidation and heterogeneous Fenton-like reaction. Compared with the bulk GFO, the photodecomposition rate of RhB was improved about 22 times when the simultaneous presence of the nanoparticles and H 2 O 2 was observed. The mechanism and the main active species involved in photocatalytic oxidative reaction were also investigated through the carriers trapping experiments. Graphical AbstractNHE -1 0 1 2 3

show abstract

Microwave-assisted synthesis of nanoparticulate perovskite LaFeO3 as a high active visible-light photocatalyst

Cited by 142 publications

References 22 publications

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Thin film nano-photocatalyts with low band gap energy for gas phase degradation of p -xylene: TiO ₂ doped Cr, UiO66-NH ₂ and LaBO ₃ (B = Fe, Mn, and Co)

Self-propagating combustion synthesis and synergistic photocatalytic activity of GdFeO3 nanoparticles

Contact Info

Product

Resources

About

Microwave-assisted synthesis of nanoparticulate perovskite LaFeO3 as a high active visible-light photocatalyst

Cited by 142 publications

References 22 publications

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Facile hydrothermal synthesis and characterization of LaFeO3 nanospheres for visible light photocatalytic applications

Thin film nano-photocatalyts with low band gap energy for gas phase degradation of p -xylene: TiO 2 doped Cr, UiO66-NH 2 and LaBO 3 (B = Fe, Mn, and Co)

Self-propagating combustion synthesis and synergistic photocatalytic activity of GdFeO3 nanoparticles

Contact Info

Product

Resources

About

Thin film nano-photocatalyts with low band gap energy for gas phase degradation of p -xylene: TiO ₂ doped Cr, UiO66-NH ₂ and LaBO ₃ (B = Fe, Mn, and Co)