Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 33, Pages 30228-30233Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b08365
Keywords
three dimensional; metal-organic frameworks; multi porous network; electron conductivity; impedance matching
Funding
- National Nature Science Foundation of China [11575085]
- Aeronautics Science Foundation of China [2017ZF52066]
- Chinese Government Scholarship [201806830052]
- Postgraduate Research & Practice Innovation of Jiangsu Province [KYCX18_0277]
- Qing Lan Project
- Six talent peaks project in Jiangsu Province [XCL-035]
- Open Research Fund of Jiangsu Provincial Key Laboratory for Nanotechnology of Nanjing University
- foundation of Jiangsu Provincial Key Laboratory of Bionic Functional Materials
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Zeolitic imidazolate framework (ZIF-8)-derived ZnO/nanoporous carbon (NPC) aligned in a three-dimensional porous carbon network (3DPCN) is designed to form a multiporous network nanostructure to absorb electromagnetic waves. The porous 3DPCN structure acts as the electronic pathway and the nucleation locus for ZIF-8 particles. Meanwhile, the conductive networks could also provide more routes for electron transfer. With good impedance matching and attenuation characteristics, ZnO@NPC/3DPCN shows enhanced microwave response where the minimum reflection loss of -35.7 dB can be achieved with a 10 wt % filler. Our study not only exploits the new system of lightweight absorbers but also further reveals the changing of electromagnetic parameters and absorbing properties by heat treatment, which may lead to a new way to design novel lighter multiporous network nanostructures.
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