TY - JOUR
T1 - Structure-microwave absorption performance correlations of GNPs/ZnO nanocomposite absorber
T2 - Synthesis, characteration and mechanism investigation
AU - Zhang, Weidong
AU - Zheng, Yuan
AU - Zhang, Xue
AU - Zhu, Qing
AU - Tian, Lili
AU - Wu, Hongjing
AU - Yan, Hongxia
AU - Qi, Shuhua
N1 - Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/7
Y1 - 2019/7
N2 - Graphene nanoplatelets (GNPs)based materials are promising and low-cost absorbers. To develop new varieties of these absorbers, two kinds of GNPs/ZnO nanocomposites (GNPs/ZnO nanorod arrays and GNPs/ZnO nanoneedles)were synthesized in this paper, and the microwave absorption performance (MAP)together with the relevant mechanism were investigated based on the different microstructures, followed by the discussion of the growth mechanism of ZnO nanorod and nanoneedle. The result reveals that GNPs/ZnO nanorod arrays have strong reflection loss (RL)up to −44.8 dB, and effective attenuation bandwidth (RL˂-10 dB)of 4.65 GHz. While, GNPs/ZnO nanoneedles possess effective attenuation bandwidth of 6.7 GHz that covered entire X-band, and the superb RL was −15.3 dB. According to the detail analysis, we found that the pathways of attenuation EM wave are the same, and the differences between each other are responsible for the different intensity of interface polarization and multiple-scattering, due to the different microstructures.
AB - Graphene nanoplatelets (GNPs)based materials are promising and low-cost absorbers. To develop new varieties of these absorbers, two kinds of GNPs/ZnO nanocomposites (GNPs/ZnO nanorod arrays and GNPs/ZnO nanoneedles)were synthesized in this paper, and the microwave absorption performance (MAP)together with the relevant mechanism were investigated based on the different microstructures, followed by the discussion of the growth mechanism of ZnO nanorod and nanoneedle. The result reveals that GNPs/ZnO nanorod arrays have strong reflection loss (RL)up to −44.8 dB, and effective attenuation bandwidth (RL˂-10 dB)of 4.65 GHz. While, GNPs/ZnO nanoneedles possess effective attenuation bandwidth of 6.7 GHz that covered entire X-band, and the superb RL was −15.3 dB. According to the detail analysis, we found that the pathways of attenuation EM wave are the same, and the differences between each other are responsible for the different intensity of interface polarization and multiple-scattering, due to the different microstructures.
KW - Absorbing materials
KW - Graphene nanoplatelets
KW - ZnO nanoneedles
KW - ZnO nanorod arrays
UR - http://www.scopus.com/inward/record.url?scp=85064169435&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2019.04.033
DO - 10.1016/j.ceramint.2019.04.033
M3 - 文章
AN - SCOPUS:85064169435
SN - 0272-8842
VL - 45
SP - 13376
EP - 13384
JO - Ceramics International
JF - Ceramics International
IS - 10
ER -