Electrospinning Fabrication and Characterization of La₂W₂O₉/Eu³⁺ One-Dimensional Nanomaterials

One-dimensional La₂W₂O₉/Eu³⁺ nanofibers and nanoribbons were successfully fabricated by calcining electrospun PVP/[La(NO₃)₃ + Eu(NO₃)₃ + N₁₀H₄₀W₁₂O₄₁] composite fibers and composite ribbons, respectively. The effects of morphology on the luminescence properties and photocatalytic activity of the La₂W₂O₉/Eu³⁺ nanomaterials were systematically investigated. Results indicated that the optimal doping concentration of Eu³⁺ in La₂W₂O₉ nanofibers was 7%, and the average diameter of La₂W₂O₉/7% Eu³⁺ nanofibers was 171.74 ± 21.27 nm, while the average width of La₂W₂O₉/7% Eu³⁺ nanoribbons was 4.88 ± 0.28 μm. Under the same doping concentration, the luminescence intensity of nanofibers was significantly stronger than that of the nanoribbons. Research on the photocatalytic property demonstrated that the La₂W₂O₉/Eu³⁺ nanomaterials exhibited a pronounced photocatalytic performance in the degradation of RhB molecules under ultraviolet (UV) light irradiation. It was further demonstrated that the photocatalytic property correlated closely with both the luminescence intensity and the morphology of La₂W₂O₉/Eu³⁺ nanomaterials.