Environmental adaptability and efficient electromagnetic wave protection of C/Co aerogels by anchoring Co to biomass carbon via the high-temperature induced morphological transformation of ZIF-67
Year: 2025
Type: article
Abstract: Biomass-derived carbon aerogels have emerged as promising electromagnetic protection materials due to their ultralight, porous, and eco-friendly properties, yet achieving high performance with environmental durability remains challenging. Employing an electromagnetic synergistic strategy, this work successfully fabricated a lotus seedpod-inspired carbon-based aerogel composite (SPCA@Co) using shaddock peel biomass, where magnetic Co components were introduced via ZIF-67. The material's natural hierarchical porous structure and Co nanoparticle-anchored heterogeneous interfaces optimize impedance matching by regulating conductivity, polarization, and magnetic loss, yielding exceptional electromagnetic protection performance: –52.5 dB minimum reflection loss (RLmin) of 4.52 GHz effective absorption bandwidth (EAB) at 1.4 mm thickness, and 76 dB shielding efficiency. Simultaneously, SPCA@Co exhibits multifunctionality in complex environments, integrating thermal insulation, hydrophobicity, mechanical robustness, and stability under acid rain/weathering, with adaptability validated by radar cross-section simulations. This work provides a sustainable strategy for designing high-performance, multifunctional electromagnetic protections using biomass resources.
Source: Nano Research
Authors: Zhilong liu, Lihong Wang, Yunmin Zhao, Jianxin Ren, Haojin Wang, Jianqiao Hu, Hongtao Guan
Language: English
Field: Materials Science
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $5,290
OpenAlex ID: W4410415221