期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 574, 期 -, 页码 87-96出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.04.053
关键词
Polypyrrole; Interfacial polarization; Zeolatic imidazolte framework; Dielectric; Reflection loss
资金
- National Natural Science Foundations of China [51772001]
- Imported Talent Team Project of Anhui Provincial Department of Education [2015 [211]]
Due to the high electromagnetic interference (EMI) pollution, electromagnetic wave (EMW) absorption materials have risen as an important research area in material science and technology. Herein, the prepared carbonized ZIF-67 (CZIF) nanocomposites with polypyrrole (PPy) showed significantly enhanced electromagnetic wave absorption performance. The CZIF-PPy nanocomposites were prepared by the solvothermal and in-situ polymerization method. The CZIF-PPy nanocomposites possess a decent reflection loss (RL) value between the 2-18 GHz frequency range. The enhanced surface properties and magnetic-dielectric interfacial polarization plays an important role to achieve higher reflection loss and broader absorption bandwidth. This work explains the importance of magnetic-dielectric interface and may lead to design of more advanced hybrid electromagnetic wave absorption systems. (C) 2020 Elsevier Inc. All rights reserved.
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