Preparation and Photocatalytic Properties of La2CoFeO6 Bamboo-like Hollow Nanofibers

doi:10.15541/jim20150143

Abstract

Abstract:

La₂CoFeO₆ bamboo-like hollow nanofibers photocatalytic material was successfully prepared by electrostatic spinning. La₂CoFeO₆ nanofibers, which were connected to each other by rhombic La₂CoFeO₆ nanoparticles, had stable one-dimensional structure and clear bamboo-like hollow structure. The specific surface area of as-prepared inorganic nanofibers reached 98.7 m²/g. La₂CoFeO₆ nanofibers had a high utilization for natural light and its band gap was 1.6 eV. When concentration of methyl orange was 10 mg/L with pH of 2 and the dosage of La₂CoFeO₆ nanofibers was 1.5 g/L, methyl orange was degraded by La₂CoFeO₆ nanofibers within 2 h under natural light at 96.9%.

Key words: La2CoFeO6 nanofibers, electrostatic spinning, photocatalysis, hollow structure, natural light

CLC Number:

O643

BI Jun, WU Yan-Bo, ZHAO Heng-Yan, WEI Bin-Bin. Preparation and Photocatalytic Properties of La₂CoFeO₆Bamboo-like Hollow Nanofibers[J]. Journal of Inorganic Materials, 2015, 30(10): 1031-1036.

Figures/Tables 9

Fig. 1 XRD pattern of La2CoFeO6 nanofibers

Fig. 2 FE-SEM images of La2CoFeO6 nanofibers at different magnification

Fig. 3 FT-IR spectrum of La2CoFeO6 nanofibers

Fig. 4 TEM images (a, b), SEAD pattern (c) and HRTEM image (d) of La2CoFeO6 nanofibers

Fig. 5 N2 adsorption-desorption isotherms and pore size distribution curves (inset) of La2CoFeO6 bamboo-like hollow nanofibers

Fig. 6 UV-Vis spectra of La2CoFeO6 bamboo-like hollow nanofibers

Fig. 7 Degradation rate curves of methyl orange solution (pH=5-6) under different conditions

Fig. 8 Effect of catalyst amount (a) and solution pH (b) on the photocatalytic properties of La2CoFeO6 bamboo-like hollow nanofibers

Fig. 9 Photocatalytic stability of La2CoFeO6 bamboo-like hollow nanofibers

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Preparation and Photocatalytic Properties of La₂CoFeO₆Bamboo-like Hollow Nanofibers

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