期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 121, 期 9, 页码 4989-4998出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.6b11656
关键词
-
资金
- Qingdao Basic & Applied Research project [15-9-1-100-jch]
- National Natural Science Foundation of China [21603115]
- China Postdoctoral Science Foundation [2016M592136]
- Open Fund of State Key Laboratory of Metastable Materials Science and Technology (Yanshan University) [201608]
- Qingdao Postdoctoral Application Research Project [2016002, 40601060003]
The purpose of this work was to fabricate highperformance 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 (LID) 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-NDbased 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/m_m) 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 reached 44.4 dB at 11.48 GHz with the thickness of 3.0 mm, while the similar RL values of MoS2/PANI-NDs (-44.8 dB) reached 14.5 GHz with the thickness of only 1.6 mm. The broad effective EM absorption bandwidth (RL values less than -10 dB) for MoS2/PANI-NDs was observed owing to the synergistic effect of PANI-NDs and MoS2 nanosheets.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据