Noncovalent self-assembly of a minuscule amount of nickel porphyrin on carbon nanotube for high-performance electromagnetic wave absorbing. (January 2023)

• Record Type: Journal Article
• Authors: Liu, Chang; Qiao, Jing; Zhang, Xue; Yang, Yunfei; Li, Bin; Wu, Lili; Liu, Wei; Zeng, Zhihui; Liu, Jiurong
• Is Part Of: Composites. Volume 164(2023)
• Publication Date: 2023-01
• Subjects: A Carbon nanotubes and nanofibers -- A Nanocomposites -- C Microstructures -- E Assembly -- Electromagnetic wave absorption; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2022.107281
• Languages: English
• ISSNs: 1359-835X

Abstract

Highlights: A type of mass-manufacturable Ni-TAPP modified CNTs for EMW absorption. A superb performance (−66.5 dB of RL) achieved at a pretty tiny loading amount (2.86 wt%). An unique active site effect benefited the impedance matching conditions. Abstract: High-performance and lightweight carbon-based electromagnetic wave (EMW) absorbing materials are urgently required for applications in aerospace and next-generation electronics. However, it is of great importance to break through the conventional thinking of loading high-density magnetic metals to improve the EMW absorption performance of carbon-based absorbers. Herein, the 5, 10, 15, 20-tetrakis (4-aminophenyl) porphyrin nickel (Ni-TAPP) was self-assembled on the surface of carbon nanotubes (CNTs) driven by the π-π interactions via a simple, facile, scalable preparation approach. The fabricated Ni-TAPP@CNTs nanocomposites not only effectively integrated the Ni active sites of Ni-TAPP and three-dimensional conductive networks of CNTs, but also exhibited good impedance matching and optimized dielectric loss. Benefiting from this remarkable synergy, the Ni-TAPP@CNTs presented a minimum reflection loss of −66.5 dB (1.9 mm, 10.1 GHz) at a Ni-TAPP content of merely 2.86 wt%. This work undoubtedly provides a high-efficiency strategy for the scalable fabrication of lightweight, durable EMW absorbing materials.