Growing 3D ZnO nano-crystals on 1D SiC nanowires: enhancement of dielectric properties and excellent electromagnetic absorption performance

Abstract

Nowadays, only by balancing the relationship of electromagnetic applications and electromagnetic pollution management can human health and quality of life be guaranteed.

Controllable Fabrication of SiC@C-Fe3O4 Hybrids and Their Excellent Electromagnetic Absorption Properties

“…However, ordinary SiC is not suitable for EM absorption due to its poor dielectric behavior, which can be effectively improved by changing its morphology in the nanoscale [9][10][11][12] or blending with relatively higher dielectric materials (e.g., CNTs [13], graphene [14], PPy [15]). The doping or decoration with heterogeneous metal (e.g., Fe [16], Ni [17], Co [18], Al [19], Cu [20]) or compound (Fe 3 O 4 [21], NiO [22], ZnO [23], HfC [24]) is another effective method for obtaining SiC-based absorbers. Generally, SiC-based EA materials with multiple features are designed and supposed to exhibit a more impressive performance, and consists of complicated microstructure and components at the same time.…”

“…The reported minimum reflection loss (RL min ) was 51 dB at 8.6 GHz. Wu et al synthesized one-dimensional SiC nw decorated with ZnO nanoparticles and obtained a broad EAB of 6.60 GHz in range of 11.08 GH Z to 17.68 GHz [23]. Except for the predominant binary hybrids, some SiC-based ternary hybrids were also investigated.…”

Dielectric and Electromagnetic Attenuated Properties of WC/Wax Composite

“…In recent years, metals and their oxide, low-dimensional carbon materials are currently the most popular materials in the research of electromagnetic absorption (EA) materials. Metal and their composites mainly include the metal with dielectric property, the ferromagnetic metal, and their oxide, for example, metal microstructure (Liu et al, 2018;Qiu et al, 2020), ZnO (Wu et al, 2014;Sun et al, 2016), CuO (Ma et al, 2016), Fe 2 O 3 (Xu et al, 2019), CoFe 2 O 4 (Zhang et al, 2019), MoS 2 (Dai et al, 2019), and so on. The minimum value of reflection loss (RL) of quasione-dimensional nickel nanostructure prepared by a wet chemical process reached −42.08 dB at 7.4 GHz with a low filler loading (Xu et al, 2018).…”

In-Situ Conversion of ZnO/Ni3ZnC0.7/CNT Composite from NiZn Bimetallic MOF Precursor with Enhanced Electromagnetic Property

“…MOFs possess desirable advantages, i.e., porous structures, abundant hetero-interfaces, magnetic and dielectric dual losses, and large specific area. Until now, multiple MOF-derived composite absorbers such as ZnO/Fe/Fe 3 C/C [ 10 ], Co 3 O 4 /Co/RGO [ 11 ], ZnO/SiC [ 12 ], ZnO/Fe [ 13 ], ZnO/Co 3 ZnC/Co/C [ 14 ] have been fabricated and have been shown to exhibit good microwave absorbing properties. However, the filler loading in matrix of these recent MOF-derived absorbers is generally more than 40 wt.%, which fails to fulfill the lightweight requirement for new-generation electromagnetic absorbers.…”