Fabrication of unique ribbon-like porous LaFeO3 nanofibers photocatalyst via electrospinning

Li, Shudan; He, Zhixiao; Wang, Xianlei; Gao, Kun

doi:10.1007/s00339-014-8559-0

Cited by 15 publications

(2 citation statements)

References 37 publications

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“…Nowadays, perovskite oxide LaFeO 3 (LFO) has become one of the most important materials for its interesting physical properties and potential applications in the fields of electrode, catalyst, and gas sensors. − Considerable experimental and theoretical research has been done on the gas sensing characteristics of LFO due to its high gas response and stability, especially to ethanol. − …”

Section: Introductionmentioning

confidence: 99%

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Cao

Wang

et al. 2019

ACS Appl. Nano Mater.

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Au and Cl comodified LaFeO3 nanoparticles were prepared by a citric sol–gel method through the addition of HAuCl4 into precursor. As evidenced by XRD and TEM, the addition of HAuCl4 suppressed the growth of LaFeO3 crystallite but hardly influenced the average particle size. XPS indicated that chlorine existed in the forms of organics and chlorides, while Au existed in the form of Au0. The simultaneous existence of Au and Cl on the surface suppressed the adventitious carbon contamination, whereas it favored the formation of La carbonate and the adsorption of oxygen species which were both beneficial for the improvement of gas sensing performance. At the prime working temperature of 120 °C, the Au and Cl comodified LaFeO3 sensor with the addition of 1 wt % HAuCl4 exhibited the highest gas response (220.7) reported so far to 100 ppm ethanol. Ab initio calculations on the Fe–O terminated LaFeO3 (001) surface preadsorbed by O atom demonstrated that more charge transferred from the ethanol to the surface additionally adsorbed by Au and Cl, resulting in higher gas response as observed.

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Section: Introductionmentioning

confidence: 99%

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Cao

Wang

et al. 2019

ACS Appl. Nano Mater.

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“…[8][9][10] Inorganic nanobers with at belt-and ribbon-like shapes have been made of several simple and complex oxides, for example, In 2 O 3 /Co 3 O 4 , Al 2 O 3 , BaTiO 3 , LaFeO 3 , RuO, and Bi 2 WO 6 . [11][12][13][14][15][16] A larger surface-to-volume ratio of the belt-and ribbon-like nanobers makes such ber architectures attractive for gas sensors and catalyst supports. Furthermore, the belt-and ribbon-like geometries can lead to the changes in the ber's pore shape and size distribution, introduce the anisotropy of transport and mechanical properties, and can subsequently result in the nanobrous materials with better gas selectivity, multiferroic and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Ribbon-like and spontaneously folded structures of tungsten oxide nanofibers fabricated via electrospinning

et al. 2015

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Tungsten oxide (WO 3 ) nanofibers with shapes ranging from cylindrical to ribbon-like were prepared by annealing electrospun polyvinylpyrrolidone/ammonium metatungstate (PVP/AMT) fibers. Formation of periodically folded "zigzag" patterns in PVP/AMT and WO 3 ribbon-like fibers was observed for the first time at the initial stage of the electrospinning process on the surface of a stationary substrate. Among methods tested (capillary needle, needleless dc-and ac-electrospinning), only the capillary needle dc-electrospinning process was effective in producing ribbon-like fiber structures. Annealing of such PVP/AMT fibers at 500 C in air led to the formation of 80 AE 10 nm thick WO 3 ribbons with a width-tothickness ratio of up to 50 : 1. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), and Raman spectroscopy were used to analyze the material. Analyses revealed that regardless the fiber's shape, the annealed oxide fibers were polycrystalline with a grain size of 60 AE 30 nm and consisted of the monoclinic phase of WO 3 . When compared to cylindrical fibers, the ribbon-like WO 3 nanofibers exhibited higher porosity but lower mechanical strength with increased width of the ribbon-like structure. Fig. 7 XPS (W4f, C1s, O1s, and N1s) spectra of (a) as prepared PVP/AMT ribbon-like nanofibers and (b) the resulting WO 3 fibers after thermal processing for 3 h at 500 C in the air; (c) FTIR spectra of PVP/AMT (top) and annealed WO 3 (bottom) fibers.This journal is

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Preparation and characterization of ceramic nanofibers based on lanthanum tantalates

Múdra

Bruncková

Strečková

et al. 2016

J Sol-Gel Sci Technol

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Fabrication of unique ribbon-like porous LaFeO3 nanofibers photocatalyst via electrospinning

Cited by 15 publications

References 37 publications

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Ribbon-like and spontaneously folded structures of tungsten oxide nanofibers fabricated via electrospinning

Preparation and characterization of ceramic nanofibers based on lanthanum tantalates

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Fabrication of unique ribbon-like porous LaFeO3 nanofibers photocatalyst via electrospinning

Cited by 15 publications

References 37 publications

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO3 Nanoparticles

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO3 Nanoparticles

Ribbon-like and spontaneously folded structures of tungsten oxide nanofibers fabricated via electrospinning

Preparation and characterization of ceramic nanofibers based on lanthanum tantalates

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Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles