@article{Zhang2023, 
author = {Zhiwei Zhang and Zhuo Li and Lun Xia and Ruofeng Wang and Yishu Cao and Zheng Cheng and Yi Huang},
title = {Much enhanced electromagnetic wave absorbing properties from the synergistic effect of graphene/γ-graphyne heterostructure in both gigahertz and terahertz band ranges},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {1},
pages = {88-100},
keywords = {mechanochemical, graphene oxide, γ-Graphyne, electromagnetic wave (EMW) absorption, anticorrosive},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5093-9},
doi = {10.1007/s12274-022-5093-9},
abstract = {Exploring advanced electromagnetic wave (EMW) absorbers is one of the most feasible ways to solve the increasing electromagnetic pollution in both military and civil fields. In this work, γ-graphyne (γ-GY) is synthesized by a mechanochemical route using CaC2 and hexabromobenzene (PhBr6). Then three-dimensional (3D) reduced graphene oxide/γ-GY (RGO/GY) heterostructures are prepared through facile solvothermal self-assembly and subsequent thermal reduction. The influences of calcination temperature and the content of γ-GY of the composite on EMW absorption performance are fully investigated. The minimum reflection loss (RL) value of the RGO/GY composite foam is −71.73 dB at 10.48 GHz with the matching thickness of 3.54 mm, and the effective absorption bandwidth (EAB) less than −10 dB is 7.36 GHz. Moreover, excellent terahertz (THz) absorption property is also obtained at 0.2–1.6 THz. The RL of 84.08 dB is acquired, and the EAB covers 100% of the entire measured bandwidth. In addition, the composite is also a promising anticorrosive EMW absorber. This work provides encouraging findings, which are also instructive for the potential advantages of graphyne-based materials as highly efficient EMW absorbers in both gigahertz and terahertz band ranges.}
}