Lightweight Excellent Microwave Absorption Properties Based on Sulfur Doped Graphene

Publication date: Available online 25 September 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Lin Tan, Menghui Zhu, Xiaoyang Li, Huixia Feng, Nali Chen, Dan ZhaoAbstractLightweight and high-efficiency electromagnetic wave (EMW) absorption sulfur doped graphene (S-GS) was fabricated by reducing and doping graphene oxide (GO) using chemical method. The obtained S-GS exhibits an extremely low reflection loss (RL), wide effective absorption frequency bandwidth at a thin coating thickness (d), light weight and low cost. The minimum RL reaches -52.3 dB at 17.5GHz with a matching thickness of 1.22mm. More excitedly, the EM absorption properties could be double-adjusted. By changing the amount of dopant and the thickness of S-GS, The minimum RL touches -52.2 dB at 9.4GHz and -49.3 dB at 8.5GHz, respectively, even much lower than most kinds of GS based composites which combined with polymers, magnetic nanoparticles and so on. In a word, S-GS can be promised to be an ideal candidate for constructing novel MW absorber with lightweight, strong absorption characteristics, and thin matching thickness.Graphical abstract
Source: Journal of Saudi Chemical Society - Category: Chemistry Source Type: research