Construction of SnO2 nanoparticle cluster@PANI core-shell microspheres for efficient X-band electromagnetic wave absorption
Zhao, Jia 1Li, Ming 2Gao, Xiaogang3
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作者信息
1. Bohai Univ
2. Jishou Univ
3. Northwestern Polytech Univ
折叠
Abstract
Superior electromagnetic (EM) wave absorption properties in 8.2-12.4 GHz (X-band) can be obtained via the effective combination of polyaniline (PANI) and SnO2 nanoparticle cluster. In this work, SnO2 nanoparticle cluster@PANI (SnO2@PANI) core-shell microspheres were firstly fabricated via a hydrothermal process followed by in-situ polymerization, and the EM wave absorption properties of SnO2@PANI coreshell microspheres in X band were studied. The related structure and morphology analyses indicated SnO2@ PANI core-shell microspheres were successfully synthesized with PANI coated on the surface of SnO2 nanoparticle cluster. The minimum reflection loss (RLmin) of - 69.1 dB (thickness of 2.78 mm) and effective absorption bandwidth (EAB) covering the whole X-band (when the thickness was from 2.5 to 3.1 mm) was achieved. Remarkable EM wave absorption properties of SnO2@PANI core-shell microspheres were mainly attributed to the outstanding impedance matching characteristic and dielectric loss capability (conduction loss, interfacial polarization loss and dipole polarization loss).
NSTL
Elsevier