Effects of calcination temperature on the n-butanol gas-sensing properties of LaFeO3 nanotubes

Wang, Wenjun; Wu, Jingxuan; Zou, Song; Luo, Qi; Wang, Zhenxing; Wan, Yu; Wang, Yimu; Feng, Changhao

doi:10.1007/s10854-023-10780-5

Cited by 5 publications

(2 citation statements)

References 49 publications

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“…37–1493 22 . Similar results were reported for LaFeO 3 nanotubes and NPs synthesized by the electrostatic spinning method and microwave irradiation 23 , 24 . The selected area of electron diffraction that HR-TEM checked is Fig.…”

Section: Resultssupporting

confidence: 86%

“…Therefore, LaFeO 3 exhibits excellent thermal stability, high electron mobility, and gas-sensing ability 22 , 23 . These researchers 24 made LaFeO 3 nanotubes with a diameter of about 200 nm. They discovered that raising the calcination temperature from 600 to 800 °C makes the tube surfaces denser and rougher and makes them more sensitive to n -butanol.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, structural, optical, and thermal properties of LaFeO3/Poly(methyl methacrylate)/Poly(vinyl acetate) nanocomposites for radiation shielding

Khalifa,

El Sayed,

Kassem

et al. 2024

Sci Rep

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This work is an attempt to develop flexible radiation shielding based on a blend of polymethyl methacrylate (PMMA)/polyvinyl acetate (PVAc) and LaFeO3 nanoparticles (NPs). LaFeO3 and LaFeO3/PMMA/PVAc were made using simple chemical techniques. A high-resolution transmission electron microscope (HR-TEM) and X-ray diffraction (XRD) showed that well-crystallized LaFeO3 NPs with particles 79 nm in size and an orthorhombic shape were obtained. In addition, XRD confirmed the existence of PMMA, PVAc, and LaFeO3 in the nanocomposite films. Fourier transform infrared (FTIR) confirmed that the LaFeO3 NPs and the reactive functional groups in the blend interacted with each other. Field emission-scan electron microscope (FE-SEM) analysis showed that PMMA and PVAc form a homogenous blend and that the LaFeO3 NPs were spread out inside and on the blend surface. The samples showed transmittance in the range of 30–74% and a small extinction coefficient (≤ 0.08). The samples exhibited a dual-band gap structure, and the direct (indirect) band gap shrank from 5.1 to 4.7 eV (4.9 to 4.4 eV). The thermal analyses showed that the samples are thermally stable up to 260 °C. The Phy-X/PSD software was used to figure out the theoretical gamma-ray attenuation parameters, such as the mass attenuation coefficient, the mean free path, and the half-value layer, for different PMMA/PVAc + x% LaFeO3 composites. It is demonstrated that the PMMA/PVAc + 10 wt% LaFeO3 sample exhibits much better shielding effectiveness than PMMA/PVAc, and hence it is suitable for protecting against radiation.

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Section: Resultssupporting

confidence: 86%