Poly(dimethylsilylene)diacetylene-Guided ZIF-Based Heterostructures for Full Ku-Band Electromagnetic Wave Absorption
| العنوان: | Poly(dimethylsilylene)diacetylene-Guided ZIF-Based Heterostructures for Full Ku-Band Electromagnetic Wave Absorption |
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| المؤلفون: | Terence X. Liu, Kai-Jie Chen, Peng Miao, Kaiyang Cheng, Ding Wang, Jie Kong, Junwei Gu, Ben Xu, Steven Wang, Hongqiang Li |
| المصدر: | ACS Applied Materials & Interfaces. 11:17706-17713 |
| بيانات النشر: | American Chemical Society (ACS), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Materials science, Diacetylene, business.industry, F100, F200, Heterojunction, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Ku band, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Electromagnetic shielding, Optoelectronics, General Materials Science, 0210 nano-technology, business, Electromagnetic wave absorption, Zeolitic imidazolate framework |
| الوصف: | Zeolitic imidazolate frameworks (ZIFs), a group of metal–organic frameworks (MOFs), hold promise as building blocks in electromagnetic (EM) wave absorption/shielding materials and devices. In this contribution, we propose a facile strategy to synthesis three dimensional ZIF-67-based hierarchical heterostructures through coordinated reacting a preceramic component, poly(dimethylsilylene)diacetylenes (PDSDA) with ZIF-67, following by carbonizing the PDSDA wrapped ZIF at high temperature. The introduction of PDSDA leads to a controllable generation of surface network containing branched carbon nano-tubes (CNTs) and regional distributed graphitic carbons, in addition to the nanostructures with well-defined size and mesoporous surface made by cobalt nanoparticles. The surface structures can be tailored through variations in pyrolysis temperatures, therefore providing a simple and robust route to form highly structural surface on ZIF-based nanostructures. The heterostructure of nanocomplex allows the existence of dielectric loss and magnetic loss, therefore, yielding a significant improvement on EM wave absorption with a minimum reflection coefficition (RCmin) of -50.9 dB at 17.0 GHz at a thickness of 1.9 mm and an effective absorption bandwidth (EAB) covering the Ku band (12.0 GHz to 18.0 GHz). |
| وصف الملف: | application/pdf |
| تدمد: | 1944-8252 1944-8244 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0314a375695c7b3dc79ef5a8ec9a1d88 https://doi.org/10.1021/acsami.9b03944 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....0314a375695c7b3dc79ef5a8ec9a1d88 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19448252 19448244 |
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