Constructing Two-, Zero-, and One-Dimensional Integrated Nanostructures: an Effective Strategy for High Microwave Absorption Performance
Constructing Two-, Zero-, and One-Dimensional Integrated Nanostructures: an Effective Strategy for High Microwave Absorption Performance
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构建二维、零维和一维集成纳米结构：高微波吸收性能的有效策略
DOI：
10.1021/acsami.6b11443
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发表时间：
2016
影响因子：
9.5
通讯作者：
Du Youwei
中科院分区：
文献类型：
--
作者：
Sun Yuan;Xu Jianie;Qiao Wen;Xu Xiaobing;Zhang Weili;Zhang Kaiyu;Zhang Xing;Chen Xing;Zhong Wei;Du Youwei
采用两步法制备了一种由二维mos2纳米片、零维Ni纳米颗粒和一维碳纳米管（CNTs）组成的新型“201”纳米结构复合材料：通过湿化学方法将Ni纳米颗粒沉积在几层mos2纳米片表面，然后通过Ni纳米颗粒催化化学气相沉积生长CNTs。与ni - mos2或Ni-CNTs相比，201-MoS2-Ni-CNTs复合材料具有显著增强的微波吸收性能。填充率为30 wt %的201-MoS2-Ni-CNTs/蜡复合材料在厚度为2.4 mm时的最小反射损耗（RL）值为−50.08 dB。当厚度为2.1 mm时，最大有效微波吸收带宽（RL<−10 dB）为6.04 GHz。优异的吸收能力源于合适的阻抗匹配比、强的介电损耗和大的比表面积，这些都归功于“201”纳米结构。此外，该方法还可以推广到其他低维材料，是一种高效且有前途的高微波吸收策略。
A novel “201” nanostructure composite consisting of two-dimensional MoS2nanosheets, zero-dimensional Ni nanoparticles and one-dimensional carbon nanotubes (CNTs) was prepared successfully by a two-step method: Ni nanopaticles were deposited onto the surface of few-layer MoS2nanosheets by a wet chemical method, followed by chemical vapor deposition growth of CNTs through the catalysis of Ni nanoparticles. The as-prepared 201-MoS2-Ni-CNTs composites exhibit remarkably enhanced microwave absorption performance compared to Ni-MoS2or Ni-CNTs. The minimum reflection loss (RL) value of 201-MoS2-Ni-CNTs/wax composites with filler loading ratio of 30 wt % reached −50.08 dB at the thickness of 2.4 mm. The maximum effective microwave absorption bandwidth (RL< −10 dB) of 6.04 GHz was obtained at the thickness of 2.1 mm. The excellent absorption ability originates from appropriate impedance matching ratio, strong dielectric loss and large surface area, which are attributed to the “201” nanostructure. In addition, this method could be extended to other low-dimensional materials, proving to be an efficient and promising strategy for high microwave absorption performance.