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Impact of morphology and dielectric property on the microwave absorbing performance of MoS2-based materials
Journal of Alloys and Compounds ( IF 6.2 ) Pub Date : 2018-04-11
Weidong Zhang, Xue Zhang, Hongjing Wu, Hongxia Yan, Shuhua Qi

Molybdenum disulfide (MoS2), as a significant microwave absorption materials, has been widely reported. However, it is unclear and insufficient about its microwave absorption mechanism. In this work, a series of MoS2-based materials with different morphology, including MoS2 nanosheets (MoS2-NS), hierarchical MoS2 (H-MoS2) microspheres, hollow hierarchical MoS2 (HH-MoS2) microspheres and hydrangea-like MoS2/C (MoS2/C) microspheres, were synthesized via hydrothermal reaction. More importantly, the microwave absorption mechanism and the dielectric properties as well as microwave absorption performance (MAP) were systemically studied. The results indicated that MoS2/C exhibited eminent dielectric properties and MAP, which resulted from the unique structure and component. The minimum reflection loss (RL) value of MoS2/C microspheres/wax with 30 wt% loading is −44.67 dB at the thickness of 1.4 mm, and the corresponding bandwidth with effective attenuation (RL < -10 dB) is up to 3.32 GHz (11.7–15.02 GHz).



中文翻译:

形貌和介电性能对MoS 2基材料微波吸收性能的影响

已经广泛报道了作为重要的微波吸收材料的二硫化钼(MoS 2)。但是,其微波吸收机理尚不清楚且不足。在这项工作中,一系列具有不同形态的基于MoS 2的材料,包括MoS 2纳米片(MoS 2 -NS),分层MoS 2(H-MoS 2)微球,空心分层MoS 2(HH-MoS 2)微球和像绣球的MoS 2 / C(MoS 2 /C)通过水热反应合成微球。更重要的是,系统地研究了微波吸收机理,介电性能以及微波吸收性能(MAP)。结果表明,MoS 2 / C表现出优异的介电性能和MAP,这是由于其独特的结构和成分所致。负载为30 wt%的MoS 2 / C微球/蜡的最小反射损耗(RL)值在1.4毫米厚度下为−44.67 dB,并且具有有效衰减(RL <-10 dB)的相应带宽最高为3.32 GHz(11.7–15.02 GHz)。

更新日期:2018-04-11
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