One-dimensional Ni@Co/C@PPy composites for superior electromagnetic wave absorption

Building the conformal protection of VB-group VS 2 laminated heterostructure based on biomass-derived carbon for excellent broadband electromagnetic waves absorption

“…Last but not least, the multiinterface VS 2 /GDC heterostructure and uniform distribution of VS 2 nanosheets with hexagonal stacking structure can also provide multiple re ection and scattering sites for the EMW absorption, ensuring that the EMWs can be effectively absorbed. To sum up, the excellent EMW absorption performance of VS 2 /GDC hybrids with strong absorption, wide EAB, thin thickness could be made possible by the synergistic effect of the above-discussed factors [40][41][42], which undoubtedly contribute to the in-depth understanding of EMW absorption mechanisms and the development of VB-group TMDs nanomaterials in the eld of EMW absorption.…”

Marine polysaccharide-based electromagnetic absorbing/shielding materials: design principles, structure, and properties

“…5a–e, the intervention of CNTs and the support of the SA-skeleton worked as pillars and prevented the restacking of MXene layers, resulting in an anisotropic porous microstructure with a high surface area of the obtained CNTs/Ti 3 C 2 –SA foam, which yielded lightweight and low-density EMW absorbing materials, and promoted the secondary and multiple absorption of incident EMW by providing multiple scattering and reflection sites 109,110 for the interior of EMW absorbing materials (prevent the transmission of EMW). Simultaneously, the uniformly distributed MXene/CNTs interlayers in the SA foam are tightly bonded to the SA matrix and establish a 3D conductive network through the support of the SA skeleton, which further provides electron hopping sites and transmission paths for the conductive network with the intrinsic conductivity differences between MXene and CNTs, 111,112 laying the foundation for the appropriate conductive loss to play a significant role in promoting the dielectric properties of EMW absorbing materials. It is well known that the impedance matching affected by the conductivity of EMW absorbing material is an important parameter to judge the EMW absorption performance, which determines whether the EMWs can be smoothly radiated from the free space to the inside of the absorbers.…”

Polypyrrole Film Deposited-TiO2 Nanorod Arrays for High Performance Ultraviolet Photodetectors

“…Several new peaks attributed to PPy also appeared in the range of 800~1800 cm −1 . Namely, characteristic peaks at 930, 1050, 1080, and 1252 cm −1 were the result of C-H deformation vibration in PPy [25,26], the double peak at 1374 and 1332 cm −1 was the ring stretching vibration peak of pyrrole [27,28], and the single peak at 1595 cm −1 was indexed to the C=C stretching vibration of pyrrole ring [29,30]. Furthermore, the characteristic peak intensity of TiO 2 in the nPPy-TiO 2 composites gradually weakened with the increased deposition times, indicating that rutile TiO 2 had been completely covered by the newly generated PPy film.…”