Construction and Characterization of Magnetic Fe3O4 Nanoparticles Supported Zn Complex: Research on Multicomponent Synthesis of Highly Functionalized Piperidines

PVDF/Fe3O4@pDA@Ag Nanofiber Membranes with Multicore–Shell Structure for EMI Shielding

“…The diffraction peak observed in each NFM corresponded to the (110) crystal plane of PVDF, , with a 2θ of 20.9°. The NFMs loaded with Fe 3 O 4 NPs all exhibited a diffraction peak at 2θ = 35.8°, belonging to the (311) crystal plane of Fe 3 O 4 (JCPDS NO.99–0073), indicating successful Fe 3 O 4 doping. , However, the diffraction peaks at 20.9 and 35.8° in the XRD patterns of NFMs with a pDA coating were weak. Compared with the PDF card of Ag (JCPDS NO.04–0783), the XRD pattern of PVDF/Fe 3 O 4 @pDA@Ag showed diffraction peaks at 2θ = 38.2, 44.3, 64.6, and 77.7°, which corresponded to the (111), (200), (220), and (311) crystal planes of Ag, respectively. , Meanwhile, due to the complete coverage of Ag on the fiber surface, the diffraction peaks at 20.9 and 35.8° were very weak.…”