One-Step Synthesis of Chestnut-Like Magnetic CNOs@PANI with Microwedge Enhanced Electromagnetic Wave Absorption
Source abstract
Abstract
In this study, a novel chestnut-like structured magnetic carbon nano-onion (MCNOs)@polyaniline (PANI) core–shell material was synthesized through a one-step in situ oxidation polymerization method under ice-bath conditions. The morphology of the chestnut-like shell was influenced by the type of protonic acid and the polymerization temperature with sulfuric acid at 0–5 °C. The MCNOs@PANI composite material demonstrated improved electromagnetic wave (EMW) absorption performance, with a minimum reflection loss (RL) of −47.82 dB at 14.64 GHz and a maximum electromagnetic wave absorption bandwidth (EAB) of 4.40 GHz at a thickness of 1.5 mm. The superior EMW absorption performance was attributed to the unique chestnut-like surface structure, enhanced core–shell impedance matching, and synergistic effects of the MCNOs and PANI. The study provides a creative approach for advancing the development of carbon-based EMW absorbers with enhanced absorption capabilities.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Energy Research Institute at NTU (ERI@N), Nanyang Technological University, 1 CleanTech Loop, Singapore 637141, Singapore
School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
China-Singapore International Joint Research Institute (CSIJRI), Guangzhou 510555, China
School of Chemistry, Taiyuan University of Technology, Taiyuan 030024, China
School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
Funding
Fund for Shanxi Key Subjects Construction · Applied Basic Research Project of Shanxi Province, China
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