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Development of Novel Graphene/g‐C 3 N 4 Composite with Broad‐Frequency and Light‐Weight Features
Author(s) -
Lv Hualiang,
Zhang Haiqian,
Ji Guangbin
Publication year - 2016
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201600065
Subject(s) - graphene , materials science , reflection loss , microwave , composite number , attenuation , electromagnetic radiation , absorption (acoustics) , oxide , porosity , optoelectronics , optics , composite material , nanotechnology , telecommunications , computer science , physics , metallurgy
In this study, a novel graphene/g‐C 3 N 4 microwave absorber is developed to solve the electromagnetic wave interference problem. Graphene/g‐C 3 N 4 composite is synthesized by loading g‐C 3 N 4 nanosheets on graphene through a simple liquid‐phase approach. High‐performance electromagnetic absorption performance can be achieved. The optimal reflection loss value is up to −29.6 dB under a thin coating layer of 1.5 mm. At the same time, the corresponding absorption bandwidth of this composite can reach 5.2 GHz (12.8–18 GHz). Excellent electromagnetic absorption property may be attributed to the current attenuation theory which has been proven by replacing graphene with porous graphene or graphene oxide. The results reveal that free electron numbers and loading mass of g‐C 3 N 4 on graphene play the key roles in the intensity of current attenuation and resistance value.