Rationally designed structure of mesoporous carbon hollow microspheres to acquire excellent microwave absorption performance

Abstract

In this study, we used a novel and facile hard-template etching method to manufacture mesoporous carbon hollow microspheres (MCHMs).

Microwave-Boosted One-Step Synthesis of Nanocrystal N-Doped 2D Carbon/Ni Composite with High Electromagnetic Absorption Performance

“…the NC/Ni compounds was dielectric loss. Further, attenuation constant (a) and imped ance matching radio (Zin/Z0) were calculated based on the following equations [33,34]:…”

Ni2P−Cu3P/CNTs Nanocomposites with Porous Structures for Broadband and Wide-Angle Microwave Absorption

“…21,22 Micro and mesoporous, two common types of porous structures, facilitate the extension of propagation paths and enhance multiple reflections and scattering of incident waves, thereby enhancing microwave energy dissipation. 23 Additionally, mesoporous structures, with their smaller pore size, result in larger specific surface areas, facilitating the penetration of microwaves into the material interior and improving impedance matching. Meanwhile, mesoporous structures create rich solid−gas interfaces between the air medium, greatly promoting interface polarization and forming numerous heterogeneous interfaces.…”

Construction of hollow copper selenide boxes and S-doping for enhanced electromagnetic wave absorption

“…Their complex structures and valence states (e.G Cu0.87Se, CuSe, Cu3Se2, Cu1.8Se, Cu2Se, CuSe2, etC) lead to some unique optical and electrical properties [17,18], which make them widely used in many fields such as sensors [19], solar cells [20], electrochemistry [21], etC And a lot of work has been invested in the synthesis of copper selenide crystals with different morphologies such as nanoparticles [22], nanowires [23] and nanotubes [24]. However, copper selenide boxes incorporating anion doping engineering in the field of EMW absorption have not been reported very ofteN In addition, the controlled synthesis of hollow micro-nanostructures been receiving a lot of attention due to their potential applications in many fieldS In the field of EMW absorption, hollow structured materials provide an effective idea for the fabrication of lightweight and efficient EMW absorbers due to good impedance matching, high loss, and tunable EM parameters [25][26][27]. Among the methods for synthesizing hollow micro-nanostructures template-directed synthesis has been shown to be an effective method for obtaining hollow structureS However, an additional step is usually required to remove the template during the experimenT The Kirkendall effect has progressed due to the difference in diffusion rates between the two components used to form hollow nanostructures [28].…”