The nearby dual-nanocarbon of CNO/TiO2/SiO2/CC nanohybrids with multi-interfaces for high-temperature microwave absorption

An ideal and distinctive microwave-absorbing carbon-based material feature an eco-friendly, low-cost fabrication process combined with high loss efficiency and strong absorption potential. Here we design an innovative nanohybrids with carbon nano onion (CNO) from paraffin ultra-pure lamp oil by flame method awning unique structure to boost up the dielectric loss. And TiO 2 is introduced for efficient microwave absorption loss through an in-situ process using C 7 H 8 O and TiCl 4 , while SiO 2 plays a critical role in controlling the dielectric constant through the use of tetraethyl orthosilicate (TEOS). To boost up the nanohybrids effective loss mechanism the material is exposed to a carbon capsule (CC) utilizing acetylene (C 2 H 2 ) as a carbon source for 5   minutes under argon to prepare CNO/TiO 2 /SiO 2 /CC nanohybrids. The nearby dual-nanocarbon forms multi-level interfaces enhancing the multi-level rebound and microwave absorption of the microwave interfaces. The as-designed CNO/TiO 2 /SiO 2 /CC has effective minimum reflection loss (RL min ) value of -54.4   dB and the maximum effective absorption bandwidth (EAB max ) of 5.5   GHz at a thickness of 1.9   mm. It also has good thermal conductivity. Hence, this work confirms that high-performance nanohybrids derived from paraffin ultra-pure lamp oil are promising candidates, providing a novel approach for the design and development of carbon-based microwave absorbers.