A new route to fabricate PbS nanofibers and PbSe nanofibers via electrospinning combined with double-crucible technique

Abstract

PbO nanofibers were fabricated by calcination of the electrospun PVP/Pb (NO 3 ) 2 composite nanofibers. For the first time, PbS nanofibers and PbSe nanofibers were successfully synthesized by double-crucible sulfurization and selenidation methods using PbO nanofibers as precursors, respectively. X-ray diffraction (XRD) analysis shows PbS nanofibers and PbSe nanofibers are respectively pure cubic phase with space group of Fm-3 m. Scanning electron microscope (SEM) observation indicates that the diameter of PbS nanofibers and PbSe nanofibers are 295.52 ± 25.43 and 265.31 ± 21.90 nm under the 95 % confidence level, respectively. The photocatalytic activities of samples were studied by using rhodamine B (Rh B) as degradation agent. When PbS or PbSe nanofibers are employed as the photocatalysts, the respective degradation rates of Rh B solution under the ultraviolet light irradiation after 220 min irradiation are 70.79 and 73.17 %. This preparation technique could be applied to prepare other metal chalcogenides nanofibers. The photocatalytic mechanism and formation process of PbS and PbSe nanofibers are also provided.

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

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Structural, electronic, optical, elastic, thermodynamic and thermal transport properties of Cs2AgInCl6 and Cs2AgSbCl6 double perovskite semiconductors using a first-principles study

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Mapping the pathways of photo-induced ion migration in organic-inorganic hybrid halide perovskites

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