Excellent electromagnetic wave absorption property of quaternary composites consisting of reduced graphene oxide, polyaniline and FeNi3@SiO2 nanoparticles

• DOI: 10.1016/j.apsusc.2015.09.103
• Publication Date: 2015-09-15T13:50:12Z
• Authors: Xiao Ding; Ying Huang; Jianguo Wang; Haiwei Wu; Panbo Liu
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract The electromagnetic wave absorption properties of the quaternary composites consisting of reduced graphene oxide (rGO), polyaniline (PANI), FeNi 3 @SiO 2 (FeNi 3 nanocrystals encapsulated in SiO 2 ) nanoparticles had never been reported. In this case, we prepared FeNi 3 @SiO 2 @rGO–PANI quaternary composites and TEM results shows spherical nanoparticles are well distributed on the surface of rGO–PANI nanosheets. The investigation of the electromagnetic wave absorbability reveals that the quaternary composites exhibit wide absorption bandwidth and enhanced electromagnetic wave absorption properties. The absorption bandwidth with reflection loss less than −10 dB (90% attenuation) is up to 6.64 GHz (10.08–10.80 GHz, 12.08–18.0 GHz), and the maximum reflection loss reaches about −40.18 dB at 14.0 GHz with the thickness of 2.4 mm. It is believed that the FeNi 3 @SiO 2 @rGO–PANI composites can serve as excellent electromagnetic wave absorbent and can be widely used in practice.