The efficient absorption of electromagnetic waves by tunable N-doped multi-cavity mesoporous carbon microspheres

Morphology evolution of core–shell carbon@mesoporous carbon microspheres with excellent microwave absorption performance

“…Moreover, the abundance of mesopores in the shell leads to a large specific surface area and high porosity for carbon microspheres, providing a large number of spatial sites for the reflecting and scattering of microwaves. 34 In addition, CMCs prepared in this study exhibit better MA performance than other carbon microspheres or corresponding composites reported previously 19,22,23,35–41 (Table 1).…”

“…Moreover, our previous studies on mesoporous carbon hollow microspheres and multi-cavity mesoporous carbon microspheres demonstrated the validity of porosity and morphology design. 22,23 Although many achievements have been made in porous carbon microspheres, the effective regulation of microstructure still requires further advances.…”

CoZnO/C@BCN nanocomposites derived from bimetallic hybrid ZIFs for enhanced electromagnetic wave absorption

“…The abundant mesopores can result in unique permittivity behaviors. 29 Using the Barrett–Joyner–Halenda model, the specific areas of BCN, Co 1 Zn 1 O/C@BCN, Co 1 Zn 2 O/C@BCN, and Co 2 Zn 1 O/C@BCN were calculated to be 83.018, 68.458, 66.738, and 80.363 m 2 g −1 , respectively. The corresponding pore size distribution was 3.8 nm, which reveals the mesoporous properties of the prepared samples.…”

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

“…Presently, research on MAMs predominantly concentrates on two types of materials: dielectric loss materials and magnetic loss materials. Magnetic loss materials are exempli ed by magnetic metals or alloys [5] as well as ferrites [6], while dielectric loss materials are represented by carbon-based [7] materials and dielectric ceramics [8]. As we all know, FeSi-based powder is approached as an excellent electromagnetic wave absorber [9].…”