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Solvothermal synthesis of flower-like CoS hollow microspheres with excellent microwave absorption properties

机译：具有优异的微波吸收性能的花样Cos中空微球的溶剂质合成

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摘要

In this study, flower-like CoS hollow spheres (CHSs), synthesized via a facile solvothermal method in the presence of CTAB, were initially investigated as microwave absorbers. It was found that such microstructure was significantly different from CoS nanoparticles (CoS NPs) prepared without introducing CTAB under similar preparation conditions. Moreover, with a low filler loading of 20 wt%, CHSs based composite could reach an optimal reflection loss of -43.6 dB at 15.6 GHz, and exhibit an effective absorption bandwidth (below -10 dB) of 4.6 GHz (13.2-17.8 GHz) at the thin thickness of 2.0 mm. Furthermore, through adjusting the thickness from 2.0 to 5.0 mm, an effective absorption bandwidth of 13.2 GHz could be monitored in the frequency range of 4.8-18.0 GHz. The results indicate that the novel CHSs are intriguing microwave absorbers with the advantages of strong absorption, broad bandwidth, light weight and thin thickness, which is attributed to the unique nanoarchitecture, extra void space, and high dielectric loss.
机译：在本研究中，最初在CTAB存在下通过容易溶剂的方法合成的花样COS中空球体（CHS）被研究为微波吸收剂。发现这种微观结构与在相似的制剂条件下不引入CTAB的情况下制备的COS纳米颗粒（COS NPS）显着不同。此外，对于20wt％的低填充剂负载，基于CHSS的复合材料可以在15.6GHz下达到-43.6 dB的最佳反射损失，并且在4.6GHz（13.2-17.8GHz）的有效吸收带宽（低于-10 dB）中薄厚度为2.0毫米。此外，通过将厚度调节为2.0至5.0 mm，可以在4.8-18.0 GHz的频率范围内监测13.2GHz的有效吸收带宽。结果表明，新型CHSS具有较强吸收，宽带宽，重量轻，薄厚度的优点，归因于独特的纳米建筑，超空隙空间和高介电损耗的优点。

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  • 来源
    《RSC Advances》 |2016年第102期|共9页
  • 作者

    Huang Tingyuan; He Man; Zhou Yuming; Li Shiwei; Ding Binbin; Pan Wenlu; Huang Shuang; Tong Yuan;

  • 作者单位

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Jiangsu Optoelect Funct Mat &

    Engn Lab Nanjing 211189 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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