Growth of Polyaniline Nanoneedles on MoS2 Nanosheets, Tunable Electroresponse, and Electromagnetic Wave Attenuation Analysis
| Autor: | Jingquan Liu, Degang Jiang, Wen Ling Zhang, Ying Dan Liu, Bo Nan Hao, Xiaoxia Wang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Attenuation Reflection loss Nanotechnology 02 engineering and technology Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electromagnetic radiation 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy Polymerization chemistry Electrical resistivity and conductivity Electric field Polyaniline Physical and Theoretical Chemistry Composite material 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 121:4989-4998 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.6b11656 |
| Popis: | The purpose of this work was to fabricate high-performance dielectric materials for electrorheological (ER) application and electromagnetic (EM) wave attenuation. Commercial MoS2 bulks were exfoliated into nanosheets via combination of ball-milling and bath sonication procedures, which were used as the template for in situ grafting of PANI nanoneedles (PANI-NDs) to afford MoS2/PANI-NDs. The length–diameter (L/D) ratio of PANI-NDs on MoS2 nanosheets was feasibly tuned via modulating the polymerization time. Therefore, the tunable electrical conductivity and dielectric properties of the obtained MoS2/PANI-NDs were achieved. Compared with bare MoS2 nanosheets, MoS2/PANI-ND-based ER fluids constructed more robust fibril-like structure governed by the external electric energy and exhibited higher dynamic yield stress (186.8 Pa at 3 kV/mm) with wider applied electric field strength (0–3.0 kV/mm). Furthermore, as a novel EM wave absorbing material, the maximum reflection loss (RL) values of MoS2 nanosheets reach... |
| Databáze: | OpenAIRE |
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